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Shi W, Yang P, Zhang X. Blue-Emitting CsPbBr 3 Nanocrystals: Synthesis Progress and Bright Photoluminescence. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2025. [PMID: 40008989 DOI: 10.1021/acs.langmuir.4c05108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2025]
Abstract
All-inorganic perovskite (CsPbX3, X = Cl, Br, I) nanomaterials as novel optoelectronic semiconductors have attracted much attention due to their unique photoelectric properties in lighting, display, and photovoltaic applications. Meanwhile, green and red light-emitting diodes (LEDs) based on bromine and iodine groups have developed rapidly, in which the high external quantum efficiency (EQE) is close to that of the current commercial green and red LEDs. However, the EQE of perovskite-based blue LEDs is far behind. Blue LEDs are often made by CsPbCl3 and CsPb(Cl/Br)3 nanocrystals (NCs) with low photoluminescence (PL) quantum yields. Their phase segregation seriously limits their practical applications. The PL peak of CsPbBr3 NCs is usually located in the green region. In the case of a strong quantum confinement effect, blue PL can be observed from CsPbBr3 NCs. Therefore, blue emitting CsPbBr3 NCs have become a hot topic. This review focused on the synthesis, ligand selection, and morphology control of blue emitting CsPbBr3 NCs, in which the microstructure, luminescence, and synthesis method were first discussed. In addition, the influence of capping ligands on the PL properties and stability is indicated. Furthermore, the size and morphology adjustment are also discussed. Finally, the application and existing problems of blue-emitting CsPbBr3 in blue LEDs are summarized. This review aims to provide new insights into the preparation of efficient and stable blue-emitting CsPbBr3 and the design-based manufacturing of blue LEDs.
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Affiliation(s)
- Wenbin Shi
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Ping Yang
- School of Material Science and Engineering, University of Jinan, Jinan, 250022, PR China
| | - Xiao Zhang
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan
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2
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Xiang Z, Chen J, Huang T, Shen F, Chen X, Wang J, Wei Y, Wang W, Cao H, Ouyang X, Gao J. Improving the Scintillation Performance of PEA 2PbBr 4 Through Zn 2+ and Sb 3+ Interstitial Doping Strategy. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2025:e2414784. [PMID: 39895222 DOI: 10.1002/adma.202414784] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2024] [Revised: 01/18/2025] [Indexed: 02/04/2025]
Abstract
Organic-inorganic halide 2D perovskite single crystals have recently emerged as promising scintillators for gamma (γ) rays and fast neutrons (nf) detection. However, their energy resolution in γ-rays detection still significantly lags behind that of perovskite semiconductor detectors. Improving crystal defects and enhancing light yield to optimize light output detected by the photomultiplier tube are crucial strategies for addressing this issue. Herein, it is demonstrated that Zn2+ and Sb3+ cation interstitial doping strategy can effectively reduce internal defects within the phenylethylammonium lead bromide (PEA2PbBr4) crystal by regulating lattice expansion. This approach also suppresses light loss caused by exciton-exciton annihilation and accelerates electron-hole recombination processes, optimizing both the luminescence intensity and decay lifetime of the scintillator. The Zn2+ and Sb3+ doping PEA2PbBr4 scintillator achieve an optimal energy resolution of 4.84% and 5.65% at 662 keV for the photopeak, respectively. Additionally, in the 241Am-Be field, effective identification of nf and γ-rays around 1100 keVee is achieved using a pulse shape discrimination (PSD) method, with the figure of merit (FOM) being 0.85 and 1.03, respectively. This work provides a reliable new approach for optimizing the scintillation performance of 2D perovskite and promotes the application of 2D perovskite scintillator in γ-rays and nf detection.
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Affiliation(s)
- Zehui Xiang
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082, P. R. China
| | - Jian Chen
- School of Physics and Astronomy, Sun Yat-sen University, Zhuhai, 519082, P. R. China
| | - Tuchen Huang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P.R. China
| | - Fengzhao Shen
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P.R. China
| | - Xin Chen
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P.R. China
| | - Jun Wang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P.R. China
| | - Yuehuan Wei
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P.R. China
| | - Wei Wang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, P.R. China
- School of Physics, Sun Yat-sen University, Guangzhou, 510275, P. R. China
| | - Hongshuai Cao
- Key Laboratory of Beam Technology of the Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing, 100875, P. R. China
| | - Xiaoping Ouyang
- School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, P. R. China
| | - Jun Gao
- College of Energy Engineering, Zhejiang University, Hangzhou, 310027, P. R. China
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Yang X, Wang T, Li Y, Hu Y, Wang Y, Xie W. Long-lived carriers-promoted photocatalytic deuteration of halides with D 2O as the deuterium source over Cu doped quantum dots. J Colloid Interface Sci 2025; 678:191-199. [PMID: 39293363 DOI: 10.1016/j.jcis.2024.09.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 09/01/2024] [Accepted: 09/04/2024] [Indexed: 09/20/2024]
Abstract
Deuterium labeling is a highly valuable yet challenging subject of research in various scientific fields. Conventional deuteration methods often involve harsh reaction conditions and suffer from limited reactivity and selectivity. Herein, we report a visible light-driven C-X (X = halogen) to C-D (D = deuterium) exchange strategy over copper-doped cadmium sulfide quantum dots (Cu-CdS QDs) under mild conditions, eliminating the need for noble metal catalysts and expensive deuterium sources. The conversion of aryl halides into deuterated products using Cu-CdS QDs reaches up to 99%, which is four times higher than that achieved using pristine CdS QDs. The substantial enhancement in the photocatalytic activity of the QDs can be primarily attributed to the generation of long-lived charge carriers (approximately 6 μs) induced by Cu doping. Mechanistic studies reveal that the Cu dopants considerably retard the recombination of photoinduced carriers by creating intermediate energy levels that serve as hole trapping centers in CdS QDs, thereby improving the electron utilization efficiency in energetically demanding photoreduction reactions. Additionally, the introduction of Cu increases the energy offset between the conduction band of CdS QDs and molecular acceptors, facilitating the electron transfer process. Upon visible light irradiation, a series of aryl halides can be efficiently converted into the desired deuterated compounds using D2O as the deuterium source. This work demonstrates that regulating charge carrier dynamics in ultrasmall QD-based photocatalysts is a promising strategy for promoting organic transformations.
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Affiliation(s)
- Xian Yang
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Biosensing & Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Teng Wang
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Biosensing & Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yonglong Li
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Biosensing & Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yanfang Hu
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Biosensing & Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ying Wang
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Biosensing & Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Wei Xie
- State Key Laboratory of Advanced Chemical Power Sources, Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Tianjin Key Lab of Biosensing & Molecular Recognition, Haihe Laboratory of Sustainable Chemical Transformations, Renewable Energy Conversion and Storage Center, College of Chemistry, Nankai University, Tianjin 300071, China.
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4
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Liu Z, Lu Y, Tan W, Zhu G. Dual-drive acoustic micromixer for rapid nucleation and ultrafast growth of perovskite nanoparticles. LAB ON A CHIP 2024; 25:7-15. [PMID: 39506533 DOI: 10.1039/d4lc00721b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2024]
Abstract
All-inorganic cesium lead halide perovskites have garnered significant attention owing to their favorable optical properties. Microfluidics-based acoustic mixers are capable of achieving rapid nucleation and ultrafast growth kinetics. Nevertheless, conventional acoustic mixers rely on the response of microstructures to the acoustic field for mixing fluids, the majority of these disturbances occur in the central region of the channel, with minimal impact on the fluid within the side walls. This paper proposes a novel acoustic mixer that combines the effects of sharp corners and bubbles in response to the acoustic field, thereby producing effective disturbance of the fluid throughout the channel. The combined effect enables the micromixer to achieve complete mixing at different inlet flow ratios with mixing times as low as 5 ms. The superiority of acoustic mixers in controlling the nanocrystal formation stage was further validated through the synthesis of chalcogenide nanocrystals using the LARP method. The millisecond mixing time facilitated the rapid formation of nanocrystals and their subsequent rapid growth. The results demonstrate that the green luminescence intensity at 520 nm of the samples synthesized using the acoustic micromixer is 118% higher than that of the samples synthesized using an intermittent reactor. The novel micromixer broadens the range of applications and offers a promising avenue for the large-scale continuous synthesis of high-quality lead-halide perovskite nanocrystals (NCs).
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Affiliation(s)
- Zhifang Liu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300354, China.
| | - Yuwen Lu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300354, China.
| | - Wei Tan
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300354, China.
- Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China
| | - Guorui Zhu
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300354, China.
- Zhejiang Institute of Tianjin University, Ningbo, Zhejiang, 315201, China
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5
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Kim BW, Im SH. Supersaturated Antisolvent-Assisted Crystallization for Highly Efficient Inorganic Perovskite Light-Emitting Diodes. ACS NANO 2024; 18:28691-28699. [PMID: 39397542 DOI: 10.1021/acsnano.4c06465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/15/2024]
Abstract
We introduced a strategy to form nanocrystalline CsPbBr3 perovskite films with high luminescence and stability, inhibiting crystal growth using a CsBr supersaturated antisolvent during the antisolvent-assisted crystallization process. We devised this strategy because the supersaturated antisolvent has a higher CsBr concentration over its solubility limit in the saturated antisolvent and consequently will form the smaller perovskite nanocrystalline grains due to the quick precipitation of the CsBr. Here, the CsBr is chosen as a model inorganic antisolvent additive for a crystal growth inhibitor and a passivator. Consequently, we have achieved a nanocrystalline CsPbBr3 film with an average grain size of ∼39 nm by the CsBr supersaturated antisolvent-assisted crystallization process, which is about 41% smaller than the average grain size of the control sample. Hence, the perovskite thin film exhibited a much higher photoluminescence quantum yield than the control film. The maximum current efficiency (CEmax) and the maximum external quantum efficiency (EQEmax) of the corresponding CsPbBr3 perovskite light-emitting diodes (PeLEDs) were approximately twice higher (CEmax of 94.64 cd A-1 and EQEmax of 22.93%) than those of the control device. Simultaneously, the inclusion of CsBr additives played a multifunctional role in diminishing the leakage current of PeLEDs and enhancing their operational lifetime.
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Affiliation(s)
- Bong Woo Kim
- BK21 Four R&E Center, Department of Chemical and Biological Engineering, Korea University 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Sang Hyuk Im
- BK21 Four R&E Center, Department of Chemical and Biological Engineering, Korea University 145 Anam-ro, Seongbuk-gu, Seoul 02841, Republic of Korea
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6
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Li J, Hu Q, Xiao J, Yan ZG. High-stability double perovskite scintillator for flexible X-ray imaging. J Colloid Interface Sci 2024; 671:725-731. [PMID: 38823113 DOI: 10.1016/j.jcis.2024.05.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/22/2024] [Accepted: 05/27/2024] [Indexed: 06/03/2024]
Abstract
Metal halide perovskites, as a new class of attractive and potential scintillators, are highly promising in X-ray imaging. However, their application is limited by the sensitivity to moisture and irradiation. To address this issue, we reported a 2D layered double perovskite material Cs4Cd1-xMnxBi2Cl12 that exhibits high stability both under ambient condition and under X-ray irradiation. Cs4Cd1-xMnxBi2Cl12 demonstrates superior scintillation performance, including excellent X-ray response linearity and a high light yield (∼34,450 photons/MeV). More importantly, the X-ray excited emission intensity maintains 92% and 94% of its original value after stored at ambient condition for over two years and after X-ray irradiation with a total dose of 11.4 Gy, respectively. By mixing with PDMS (polydimethylsiloxane), we have successfully produced a high-quality flexible film that can be bent freely while maintaining its excellent scintillation properties. The scintillating screen exhibits outstanding imaging ability with a spatial resolution of up to 16.7 line pairs per millimeter (lp/mm), also, the superiority of this scintillation screen in flexible X-ray imaging is demonstrated. These results indicate the huge potential of this high-stability double perovskite scintillator in X-ray imaging.
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Affiliation(s)
- Jingyu Li
- Beijing Key Lab of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
| | - Qingsong Hu
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang 441053, China.
| | - Jiawen Xiao
- Beijing Key Lab of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
| | - Zheng-Guang Yan
- Beijing Key Lab of Microstructure and Property of Advanced Materials, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China
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7
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Kuznetsova MS, Kolobkova EV, Bataev MN, Berdnikov VS, Pankin DV, Smirnov MB, Ubyivovk EV, Ignatiev IV. Synthesis and optical properties of perovskite nanocrystals in glass with cationic substitution. J Chem Phys 2024; 161:124501. [PMID: 39319651 DOI: 10.1063/5.0227459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2024] [Accepted: 09/08/2024] [Indexed: 09/26/2024] Open
Abstract
The effect of cadmium ions introduced into fluorophosphate glass on the growth and photoluminescence (PL) of the CsPb1-xCdxBr3 perovskite nanocrystals (NCs) is systematically studied. The x-ray diffraction patterns have shown that cadmium ions are really incorporated into the NCs that results in a decrease in the lattice constant from 5.85 (x = 0) to 5.75 Å (x = 0.45). At the large cadmium content in the glass (x > 0.38), simultaneous formation of the perovskite CsPb1-xCdxBr3 NCs and the non-luminescent CsCdBr3 NCs in the hexagonal phase is found. It is also found that the lattice contraction leads to an increase in the bandgap energy and a noticeable shift of the PL band to the blue region of the spectrum (from 2.42 to 2.68 eV) with a drop in quantum yield from 85% for CsPbBr3 NCs down to 4% for CsPb0.55Cd0.45Br3 NCs. It is shown that the PL quantum yield decreases due to the formation of deep trap states, which manifest themselves as a PL band in the energy range of 1.6-2.5 eV at cryogenic temperatures. A simple model explaining the behavior of the PL band as a function of temperature in the range from 30 to 300 K is proposed.
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Affiliation(s)
- Maria S Kuznetsova
- Spin Optics Laboratory, St. Petersburg State University, 198504 St. Petersburg, Russia
| | - Elena V Kolobkova
- ITMO University, 199034 St. Petersburg, Russia
- St. Petersburg State Institute of Technology, 190013 St. Petersburg, Russia
| | - Matvey N Bataev
- Spin Optics Laboratory, St. Petersburg State University, 198504 St. Petersburg, Russia
| | - Vladimir S Berdnikov
- Spin Optics Laboratory, St. Petersburg State University, 198504 St. Petersburg, Russia
| | - Dmitrii V Pankin
- Department of Solid State Physics, St. Petersburg State University, 198504 St. Petersburg, Russia
| | - Mikhail B Smirnov
- Department of Solid State Physics, St. Petersburg State University, 198504 St. Petersburg, Russia
| | - Evgenii V Ubyivovk
- St. Petersburg State University, 198504 St. Petersburg, Russia
- Ioffe Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
| | - Ivan V Ignatiev
- Spin Optics Laboratory, St. Petersburg State University, 198504 St. Petersburg, Russia
- Department of Solid State Physics, St. Petersburg State University, 198504 St. Petersburg, Russia
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8
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Wang D, Li Y, Yang Y, Guo Y, Wei H, Liu F, Ding C, Wei Y, Liu D, Li H, Shi G, Chen S, Li H, Fuchimoto A, Xia J, Hayase S, Shen Q. Deciphering the Atomic-Scale Structural Origin for Photoluminescence Quenching in Tin-Lead Alloyed Perovskite Nanocrystals. ACS NANO 2024. [PMID: 39033511 DOI: 10.1021/acsnano.4c01674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
The development of tin-lead alloyed halide perovskite nanocrystals (PNCs) is highly desirable for creating ultrastable, eco-friendly optoelectronic applications. However, the current incorporation of tin into the lead matrix results in severe photoluminescence (PL) quenching. To date, the precise atomic-scale structural origins of this quenching are still unknown, representing a significant barrier to fully realizing the potential of these materials. Here, we uncover the distinctive defect-related microstructures responsible for PL quenching using atomic-resolution scanning transmission electron microscopy and theoretical calculations. Our findings reveal an increase in point defects and Ruddlesden-Popper (RP) planar faults with increasing tin content. Notably, the point defects include a spectrum of vacancies and previously overlooked antisite defects with bromide vacancies and cation antisite defects emerging as the primary contributors to deep-level defects. Furthermore, the RP planar faults exhibit not only the typical rock-salt stacking pattern found in pure Pb-based PNCs but also previously undocumented microstructures rich in bromide vacancies and deep-level cation antisite defects. Direct strain imaging uncovers severe lattice distortion and significant inhomogeneous strain distributions caused by point defect aggregation, potentially breaking the local force balance and driving RP planar fault formation via lattice slippage. Our work illuminates the nature and evolution of defects in tin-lead alloyed halide perovskite nanocrystals and their profound impact on PL quenching, providing insights that support future material strategies in the development of less toxic tin-lead alloyed perovskite nanocrystals.
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Affiliation(s)
- Dandan Wang
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Yusheng Li
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Yongge Yang
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Yao Guo
- School of Materials Science and Engineering, Henan Joint International Research Laboratory of Nanocomposite Sensing Materials, Anyang Institute of Technology, Anyang 455000, China
| | - Huiyun Wei
- School of Mathematics and Physics, University of Science and Technology Beijing, Beijing 100083, China
| | - Feng Liu
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, China
| | - Chao Ding
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Yuyao Wei
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Dong Liu
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Hua Li
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Guozheng Shi
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Shikai Chen
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Hongshi Li
- Institute of New Energy Materials Chemistry, School of Materials Science and Engineering, Nankai University, TongYan street 38, Jinnan District, Tianjin 300350, China
| | - Akihito Fuchimoto
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
| | - Jing Xia
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Shuzi Hayase
- i-Powered Energy System Research Center (i-PERC), The University of Electro-Communications, 1-5-1 Chofugaoka, Cho-fu, Tokyo 182-8585, Japan
| | - Qing Shen
- Faculty of Informatics and Engineering, The University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
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9
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Wang Y, Zhou D, Xu W, Sun R, Ding N, Song H. Efficient Large-Area Quantum Cutting Photoconversion Films for Silicon Solar Cells on Photovoltaic Glass Using Knife Coating. J Phys Chem Lett 2024; 15:7236-7243. [PMID: 38975969 DOI: 10.1021/acs.jpclett.4c01600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
Yb3+ doped perovskite nanocrystals (PNCs) serve as efficient photoconverters, exhibiting quantum cutting emission at ∼980 nm, which aligns precisely with the optimal response region of silicon solar cells (SSCs). However, severe nonradiative recombination caused by defects in the crystal lattice and film boundaries, along with limitations in small-scale film preparation, restricts their commercial application. Here, we used Ru3+ to mitigate lattice defects in CsPbCl3 PNCs and adjusted the quantum cutting luminescence, achieving a 175% photoluminescence quantum yield (PLQY). The results show that Ru3+ ions enter the perovskite lattice, fill lead vacancies, and passivate the lattice defects. Furthermore, cysteine effectively eliminates surface defects in PNCs by forming Pb-S bonds, resulting in films with a remarkable 117% PLQY, demonstrating strong photoconversion capabilities. Uniformly knife-coated on 20 × 20 cm2 photovoltaic glass, these films increased SSC efficiency from 21.45% to 23.15%. This study showcases a cost-effective photoconverter and a scalable coating method to boost the photovoltaic efficiency of large-area SSCs.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 130012 Changchun, China
| | - Donglei Zhou
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 130012 Changchun, China
| | - Wen Xu
- Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, School of Physics and Materials Engineering, Dalian Minzu University, 116600 Dalian, China
| | - Rui Sun
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 130012 Changchun, China
| | - Nan Ding
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 130012 Changchun, China
| | - Hongwei Song
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 130012 Changchun, China
- Institute of Sustainable Energy, School of Science, Shanghai University, 200444 Shanghai, China
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10
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Rahman SU, Song YH, Yao HB. Modification strategies of lead halide perovskite nanocrystals for efficient and stable LEDs. Chem Commun (Camb) 2024; 60:6988-6998. [PMID: 38895748 DOI: 10.1039/d4cc02072c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
Lead halide perovskite nanocrystals (PNCs) hold immense promise in high-performance light-emitting diodes (LEDs) for future high-definition displays. Their adjustable bandgaps, vivid colors, and good carrier mobility are key factors that make them a potential game-changer. However, to fully harness their potential, the efficiency and long-term stability of PNCs-based light-emitting diodes (PNC-LEDs) must be enhanced. Recent material research results have shed light on the leading cause of performance decline in PNC-LEDs, which is ionic migration linked to surface defects and grain boundary imperfections. This review aims to present recent advancements in the modification strategies of PNCs, focusing on obtaining high-quality PNCs for LEDs. The PNC modification strategies are first summarized, including crystal structure regulation, nanocrystal size tuning, ligand exchange, and surface passivation. Then, the effects of these material design aspects on LED device performances, such as efficiency, brightness, and stability, are presented. Based on the efficient modification strategies, we propose promising material design insights for efficient and stable PNC-LEDs.
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Affiliation(s)
- Sami Ur Rahman
- Hefei National Research Centre for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
- Department of Applied Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yong-Hui Song
- Hefei National Research Centre for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
- Department of Applied Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
- School of Materials Science and Engineering, Anhui University, Hefei, Anhui 230601, China
| | - Hong-Bin Yao
- Hefei National Research Centre for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China.
- Department of Applied Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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11
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Zhao C, Zhou Y, Shi C, Ou J, Pan A. Dual Passivation Strategy for Highly Stable Blue-Luminescent CsPbBr 3 Nanoplatelets. Inorg Chem 2024; 63:12316-12322. [PMID: 38885131 DOI: 10.1021/acs.inorgchem.4c01725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2024]
Abstract
Blue-emitting colloidal CsPbX3 (X = Br, Cl, or I) perovskite nanocrystals have emerged as one of the most fascinating materials for optoelectronic applications. However, their applicability is hindered by poor stability and a low photoluminescence efficiency. Herein, highly stable CsPbBr3 nanoplatelets exhibiting intense blue luminescence are fabricated by employing a strategy in which the morphology is regulated and the surface is subjected to dual passivation through the incorporation of zirconium acetylacetonate [Zr(acac)4]. The passivated CsPbBr3 nanocrystals exhibit adjustable light emission from green to dark blue and a controllable morphology from nanocubes (NCs) to nanoplatelets (NPLs) and nanorods accomplished by varying the content of Zr(acac)4. The optimized NPLs are characterized by a bright blue emission with a central wavelength of 459 nm and a high photoluminescence quantum yield of 90%. The addition of Zr(acac)4 in the synthesis of CsPbBr3 induces oriented growth with a two-dimensional morphology. The Zr(acac)4 can repair the surface defects of the nanocrystal surface, and the surface is also capped with the Zr(OH)4 cluster layer. Therefore, the passivated blue-emitting NPLs exhibit outstanding stability compared to that of pristine NPLs during long-term storage and exposure to light. This work provides a novel strategy for fabricating highly stable PNCs with deep-blue emission and widens their potential applications in blue-emitting optoelectronic devices.
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Affiliation(s)
- Chunyu Zhao
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Ying Zhou
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Chengyu Shi
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiachen Ou
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
| | - Aizhao Pan
- School of Chemistry, Xi'an Jiaotong University, Xi'an 710049, China
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12
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Lu Y, Alam F, Shamsi J, Abdi-Jalebi M. Doping Up the Light: A Review of A/B-Site Doping in Metal Halide Perovskite Nanocrystals for Next-Generation LEDs. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:10084-10107. [PMID: 38919725 PMCID: PMC11194817 DOI: 10.1021/acs.jpcc.4c00749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Revised: 05/29/2024] [Accepted: 05/29/2024] [Indexed: 06/27/2024]
Abstract
All-inorganic metal halide perovskite nanocrystals (PeNCs) show great potential for the next generation of perovskite light-emitting diodes (PeLEDs). However, trap-assisted recombination negatively impacts the optoelectronic properties of PeNCs and prevents their widespread adoption for commercial exploitation. To mitigate trap-assisted recombination and further enhance the external quantum efficiency of PeLEDs, A/B-site doping has been widely investigated to tune the bandgap of PeNCs. The bandgap of PeNCs is adjustable within a small range (no more than 0.1 eV) by A-site cation doping, resulting in changes in the bond length of Pb-X and the angle of [PbX6]4. Nevertheless, B-site doping of PeNCs has a more significant impact on the bandgap level through modification of surface defect states. In this perspective, we delve into the synthesis of PeNCs with A/B-site doping and their impacts on the structural and optoelectronic properties, as well as their impacts on the performance of subsequent PeLEDs. Furthermore, we explore the A-site and B-site doping mechanisms and the impact of device architecture on doped PeNCs to maximize the performance and stability of PeLEDs. This work presents a comprehensive overview of the studies on A-site and B-site doping in PeNCs and approaches to unlock their full potential in the next generation of LEDs.
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Affiliation(s)
- Ying Lu
- Institute
for Materials Discovery, University College
London, Malet Place, London WC1E
7JE, United Kingdom
| | - Firoz Alam
- Department
of Electronic and Electrical Engineering, University College London, London WC1E 6BT, United
Kingdom
| | - Javad Shamsi
- Cavendish
Laboratory, Department of Physics, University
of Cambridge, Cambridge CB3 0HE, United Kingdom
| | - Mojtaba Abdi-Jalebi
- Institute
for Materials Discovery, University College
London, Malet Place, London WC1E
7JE, United Kingdom
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13
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Roy D, Guha S, Acharya S. Fabrication of water-resistant fluorescent ink using the near-unity photoluminescence quantum yield of CsPbBr 3 doped with NiBr 2. NANOSCALE 2024; 16:9811-9818. [PMID: 38687330 DOI: 10.1039/d4nr00668b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
Doping with transition and alkaline earth metal ions into all-inorganic perovskite nanocrystals (NCs) has attracted attention recently for tuning the photoluminescence quantum yield (PLQY). We report on the hot injection synthesis of nickel ion-doped CsPbBr3 NCs with near-unity PLQYs. Nickel ions were successfully incorporated into the octahedral environment of CsPbBr3 NCs, replacing the lead ions. The introduction of nickel ions into CsPbBr3 NCs substantially eliminates intrinsic defects and halide vacancies for improved structural order and near-unity PLQYs. Benefiting from these unique properties, nickel ion-doped CsPbBr3 NCs were dispersed in a polymer to prepare an efficient fluorescent ink. The fluorescent ink shows excellent thermal and water stability under harsh environmental conditions. Moreover, the usefulness of the fluorescent ink for security purposes was demonstrated by designing and recognizing a fluorescent QR code. This study reveals that doped CsPbBr3 NCs can be used to prepare efficient water-resistant fluorescent ink for anti-counterfeiting applications, widening the usefulness of doped all-inorganic perovskite NCs.
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Affiliation(s)
- Dipanwita Roy
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
| | - Shramana Guha
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
| | - Somobrata Acharya
- School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India.
- Technical Research Centre (TRC), Indian Association for the Cultivation of Science, Kolkata 700032, India
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14
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Du L, An J, Katayama T, Duan M, Shi X, Wang Y, Furube A. Photogenerated carrier dynamics of Mn2+ doped CsPbBr3 assembled with TiO2 systems: Effect of Mn doping content. J Chem Phys 2024; 160:164713. [PMID: 38656441 DOI: 10.1063/5.0197068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 04/07/2024] [Indexed: 04/26/2024] Open
Abstract
In recent years, all-inorganic perovskite materials have become an ideal choice for new thin film solar cells due to their excellent photophysical properties and have become a research hotspot. Studying the ultrafast dynamics of photo-generated carriers is of great significance for further improving the performance of such devices. In this work, we focus on the transient dynamic process of CsPbBr3/TiO2 composite systems with different Mn2+ doping contents using femtosecond transient absorption spectroscopy technology. We used singular value decomposition and global fitting to analyze the transient absorption spectra and obtained three components, which are classified as hot carrier cooling, charge transfer, and charge recombination processes, respectively. We found that the doping concentration of Mn2+ has an impact on all three processes. We think that the following two factors are responsible: one is the density of defect states and the other is the bandgap width of perovskite. As the concentration of doped Mn2+ increases, the charge transfer time constant shows a trend of initially increasing, followed by a subsequent decrease, reaching a turning point. This indicates that an appropriate amount of Mn2+ doping can effectively improve the photoelectric performance of solar cell systems. We proposed a possible charge transfer mechanism model and further elucidated the microscopic mechanism of the effect of Mn2+ doping on the interface charge transfer process of the CsPbBr3/TiO2 solar cell system.
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Affiliation(s)
- Luchao Du
- Institute of Atomic and Molecular Physics, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Jie An
- Institute of Atomic and Molecular Physics, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Tetsuro Katayama
- Institute of Post-LED Photonics, Tokushima University, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
| | - Menghan Duan
- Institute of Atomic and Molecular Physics, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - XiaoPing Shi
- Institute of Atomic and Molecular Physics, Jilin University, 2699 Qianjin Street, Changchun 130012, China
| | - Yunpeng Wang
- State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
| | - Akihiro Furube
- Institute of Post-LED Photonics, Tokushima University, 2-1, Minamijosanjima-cho, Tokushima 770-8506, Japan
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15
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Roy M, Sykora M, Aslam M. Chemical Aspects of Halide Perovskite Nanocrystals. Top Curr Chem (Cham) 2024; 382:9. [PMID: 38430313 DOI: 10.1007/s41061-024-00453-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 01/24/2024] [Indexed: 03/03/2024]
Abstract
Halide perovskite nanocrystals (HPNCs) are currently among the most intensely investigated group of materials. Structurally related to the bulk halide perovskites (HPs), HPNCs are nanostructures with distinct chemical, optical, and electronic properties and significant practical potential. One of the keys to the effective exploitation of the HPNCs in advanced technologies is the development of controllable, reproducible, and scalable methods for preparation of materials with desired compositions, phases, and shapes and low defect content. Another important condition is a quantitative understanding of factors affecting the chemical stability and the optical and electronic properties of HPNCs. Here we review important recent developments in these areas. Following a brief historical prospective, we provide an overview of known chemical methods for preparation of HPNCs and approaches used to control their composition, phase, size, and shape. We then review studies of the relationship between the chemical composition and optical properties of HPNCs, degradation mechanisms, and effects of charge injection. Finally, we provide a short summary and an outlook. The aim of this review is not to provide a comprehensive summary of all relevant literature but rather a selection of highlights, which, in the subjective view of the authors, provide the most significant recent observations and relevant analyses.
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Affiliation(s)
- Mrinmoy Roy
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, 400076, India
- Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University, Bratislava, 84104, Slovakia
| | - Milan Sykora
- Laboratory for Advanced Materials, Faculty of Natural Sciences, Comenius University, Bratislava, 84104, Slovakia
| | - M Aslam
- Department of Physics, Indian Institute of Technology Bombay, Mumbai, 400076, India.
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16
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S S, Suresh S, Subramaniam MR, Batabyal SK. Improved photoluminescence stability and defect passivation in SbBr 3 post-treated CsPbBr 3 quantum dots under ambient conditions. LUMINESCENCE 2024; 39:e4706. [PMID: 38483095 DOI: 10.1002/bio.4706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 02/10/2024] [Accepted: 02/12/2024] [Indexed: 03/22/2024]
Abstract
Inorganic cesium lead halide perovskites have evoked wide popularity because of their excellent optoelectronic properties, high photoluminescence (PL) quantum yield (PLQY), and narrowband emission. Here, cesium lead bromide (CsPbBr3 ) quantum dots (QDs) were synthesized via the ligand-assisted re-precipitation method. Post-synthesis treatment of CsPbBr3 QDs using antimony tribromide improved the PL stability and optoelectronic properties of the QDs. In addition, the PLQY of the post-treated sample was enhanced to 91% via post-treatment, and the luminescence observed was maintained for 8 days. The post-synthesis treatment ensured defect passivation and improved the stability of CsPbBr3 perovskite QDs. High-resolution transmission electron microscopy revealed the presence of more ordered, uniform-sized CsPbBr3 QDs after post-synthesis treatment, and the uniformity of the sample improved as the day passed. The formation of a mixed crystal phase was observed from X-ray diffraction in both as-synthesized, as well as post-treated QDs samples with the possibility of a polycrystalline nature in the post-treated CsPbBr3 QDs as per the selected area electron diffraction pattern. The X-ray photoelectron spectroscopy spectra confirmed the presence of antimony and the possibility of defect passivation in the post-treated samples. These QDs can act as potential candidates in various optoelectronic applications such as photodetectors and light-emitting diodes due to their high PLQY and longer lifetime.
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Affiliation(s)
- Sruthi S
- Department of Physics, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India
| | - Swapnika Suresh
- Department of Physics, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India
| | - Mohan Raj Subramaniam
- Department of Physics, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India
| | - Sudip K Batabyal
- Department of Physics, Amrita School of Physical Sciences, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India
- Amrita Center for Industrial Research & Innovation (ACIRI), Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Coimbatore, Tamil Nadu, India
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17
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Reyes-Francis E, Echeverría-Arrondo C, Esparza D, López-Luke T, Soto-Montero T, Morales-Masis M, Turren-Cruz SH, Mora-Seró I, Julián-López B. Microwave-Mediated Synthesis of Lead-Free Cesium Titanium Bromide Double Perovskite: A Sustainable Approach. CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2024; 36:1728-1736. [PMID: 38370282 PMCID: PMC10870712 DOI: 10.1021/acs.chemmater.3c03108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/12/2024] [Accepted: 01/15/2024] [Indexed: 02/20/2024]
Abstract
Theoretical studies have identified cesium titanium bromide (Cs2TiBr6), a vacancy-ordered double perovskite, as a promising lead-free and earth-abundant candidate to replace Pb-based perovskites in photovoltaics. Our research is focused on overcoming the limitations associated with the current Cs2TiBr6 syntheses, which often involve high-vacuum and high-temperature evaporation techniques, high-energy milling, or intricate multistep solution processes conducted under an inert atmosphere, constraints that hinder industrial scalability. This study presents a straightforward, low-energy, and scalable solution procedure using microwave radiation to induce the formation of highly crystalline Cs2TiBr6 in a polar solvent. This methodology, where the choice of the solvent plays a crucial role, not only reduces the energy costs associated with perovskite production but also imparts exceptional stability to the resulting solid, in comparison with previous reports. This is a critical prerequisite for any technological advancement. The low-defective material demonstrates unprecedented structural stability under various stimuli such as moisture, oxygen, elevated temperatures (over 130 °C), and continuous exposure to white light illumination. In summary, our study represents an important step forward in the efficient and cost-effective synthesis of Cs2TiBr6, offering a compelling solution for the development of eco-friendly, earth-abundant Pb-free perovskite materials.
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Affiliation(s)
- Emmanuel Reyes-Francis
- Instituto
de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria, Morelia, Michoacán C.P. 58030, Mexico
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Av. Sos Baynat, s/n, Castelló de la
Plana 12071, Spain
| | - Carlos Echeverría-Arrondo
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Av. Sos Baynat, s/n, Castelló de la
Plana 12071, Spain
| | - Diego Esparza
- Unidad
Académica de Ingeniería Eléctrica, Universidad Autónoma de Zacatecas, Jardín Juárez 147,
Zacatecas Centro, C.P. 98000, Zacatecas 98000, Mexico
| | - Tzarara López-Luke
- Instituto
de Investigación en Metalurgia y Materiales, Universidad Michoacana de San Nicolás de Hidalgo, Edificio U, Ciudad Universitaria, Morelia, Michoacán C.P. 58030, Mexico
| | - Tatiana Soto-Montero
- MESA+
Institute for Nanotechnology, University
of Twente, Enschede 7500 AE, The Netherlands
| | - Monica Morales-Masis
- MESA+
Institute for Nanotechnology, University
of Twente, Enschede 7500 AE, The Netherlands
| | - Silver-Hamill Turren-Cruz
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Av. Sos Baynat, s/n, Castelló de la
Plana 12071, Spain
- Department
of Physical Chemistry, Polish Academy of
Sciences, Warsaw 01-224, Poland
| | - Iván Mora-Seró
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Av. Sos Baynat, s/n, Castelló de la
Plana 12071, Spain
| | - Beatriz Julián-López
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, Av. Sos Baynat, s/n, Castelló de la
Plana 12071, Spain
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18
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Mamgain S, Yella A. Dynamics of interfacial charge transfer between CsPbBr 3perovskite nanocrystals and molecular acceptors for photodetection application. NANOTECHNOLOGY 2024; 35:165202. [PMID: 38176067 DOI: 10.1088/1361-6528/ad1afe] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 01/04/2024] [Indexed: 01/06/2024]
Abstract
Perovskite nanocrystals (NCs) recently emerged as a suitable candidate for optoelectronic applications because of its simplistic synthesis approach and superior optical properties. For better device performance, the effective absorption of incident photons and the understanding of charge transfer (CT) process are the basic requirements. Herein, we investigate the interfacial charge transfer dynamics of CsPbBr3NCs in the presence of different molecular acceptors; 7,7,8,8-Tetracyanoquinodimethane (TCNQ) and 11,11,12,12 tetracyanonaphtho-2,6-quinodimethane (TCNAQ). The vivid change in CT dynamics at the interfaces of NCs and two different molecular acceptors (TCNQ and TCNAQ) has been observed. The results demonstrate that the ground state complex formation in the presence of TCNQ acts as additional driving force to accelerate the charge transfer between the NCs and molecular acceptor. Moreover, this donor (NCs)-acceptor (TCNQ, TCNAQ) system results in the higher absorption of incident photons. Finally, the photo detector based on CsPbBr3-TCNQ system was fabricated for the first time. The device exhibited a high on-off ratio (104). Furthermore, the CsPbBr3-TCNQ photodetector shows a fast photoresponse times of 180 ms/110 ms (rise/decay time) with a specific detectivity (D*) of 5.2 × 1011Jones. The simple synthesis and outstanding photodetection abilities of this perovskite NCs-molecular acceptor system make them potential candidates for optoelectronic applications.
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Affiliation(s)
- Swati Mamgain
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, 400076, India
| | - Aswani Yella
- Department of Metallurgical Engineering and Materials Science, Indian Institute of Technology Bombay, 400076, India
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19
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Kim D, Yun T, An S, Lee CL. How to improve the structural stabilities of halide perovskite quantum dots: review of various strategies to enhance the structural stabilities of halide perovskite quantum dots. NANO CONVERGENCE 2024; 11:4. [PMID: 38279984 PMCID: PMC10821855 DOI: 10.1186/s40580-024-00412-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 01/08/2024] [Indexed: 01/29/2024]
Abstract
Halide perovskites have emerged as promising materials for various optoelectronic devices because of their excellent optical and electrical properties. In particular, halide perovskite quantum dots (PQDs) have garnered considerable attention as emissive materials for light-emitting diodes (LEDs) because of their higher color purities and photoluminescence quantum yields compared to conventional inorganic quantum dots (CdSe, ZnSe, ZnS, etc.). However, PQDs exhibit poor structural stabilities in response to external stimuli (moisture, heat, etc.) owing to their inherent ionic nature. This review presents recent research trends and insights into improving the structural stabilities of PQDs. In addition, the origins of the poor structural stabilities of PQDs and various methods to overcome this drawback are discussed. The structural degradation of PQDs is mainly caused by two mechanisms: (1) defect formation on the surface of the PQDs by ligand dissociation (i.e., detachment of weakly bound ligands from the surface of PQDs), and (2) vacancy formation by halide migration in the lattices of the PQDs due to the low migration energy of halide ions. The structural stabilities of PQDs can be improved through four methods: (1) ligand modification, (2) core-shell structure, (3) crosslinking, and (4) metal doping, all of which are presented in detail herein. This review provides a comprehensive understanding of the structural stabilities and opto-electrical properties of PQDs and is expected to contribute to future research on improving the device performance of perovskite quantum dot LEDs (PeLEDs).
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Affiliation(s)
- Dokyum Kim
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
| | - Taesun Yun
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea
- Department of Physics, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Sangmin An
- Department of Physics, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju, 54896, Republic of Korea
| | - Chang-Lyoul Lee
- Advanced Photonics Research Institute (APRI), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
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20
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Choi JW, Kim KC. Computational Modulation in Electronic Structures of Halide Perovskites via Element/Dopant/Phase. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:221-229. [PMID: 38153105 DOI: 10.1021/acs.langmuir.3c02376] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
This study employs computational chemistry to investigate the electronic properties of halide perovskite materials, focusing on structural frameworks, elemental composition, surface engineering, and defect engineering. The tetragonal phase generally exhibits higher band gaps than the cubic phase due to conduction band differences, with LiPbCl3 showing the greatest band gap difference. The ionic radius of the A element influences band gaps for both phases, with Cs having the highest impact. Surface engineering significantly affects the electronic properties, and surface direction and composition play vital roles in determining band gaps. Defect engineering induces semiconducting-to-metallic transitions, impacting band gaps. Understanding these core variables is crucial for tailoring the electronic properties of halide perovskites for photovoltaic and optoelectronic applications.
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Affiliation(s)
- Jae Won Choi
- Computational Materials Design Laboratory, Department of Chemical Engineering, Konkuk University, Seoul 05029, The Republic of Korea
| | - Ki Chul Kim
- Computational Materials Design Laboratory, Department of Chemical Engineering, Konkuk University, Seoul 05029, The Republic of Korea
- Division of Chemical Engineering, Konkuk University, Seoul 05029, The Republic of Korea
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21
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Chen K, Luo Y, Sun M, Liu C, Jia M, Fu C, Shen X, Li C, Zheng X, Pu X, Huang Y, Lu Z. Acquiring Charge-Transfer-Featured Single-Molecule Ultralong Organic Room Temperature Phosphorescence via Through-Space Electronic Coupling. Angew Chem Int Ed Engl 2024; 63:e202314447. [PMID: 37968894 DOI: 10.1002/anie.202314447] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 11/08/2023] [Accepted: 11/15/2023] [Indexed: 11/17/2023]
Abstract
Although long-lived triplet charge-transfer (3 CT) state with high energy level has gained significant attention, the development of organic small molecules capable of achieving such states remains a major challenge. Herein, by using the through-space electronic coupling effect, we have developed a compound, namely NIC-DMAC, which has a long-lived 3 CT state at the single-molecule level with a lifetime of 210 ms and a high energy level of up to 2.50 eV. Through a combination of experimental and computational approaches, we have elucidated the photophysical processes of NIC-DMAC, which involve sequential transitions from the first singlet excited state (S1 ) that shows a 1 CT character to the first triplet excited state (T1 ) that exhibits a local excited state feature (3 LE), and then to the second triplet excited state (T2 ) that shows a 3 CT character (i.e., S1 (1 CT)→T1 (3 LE)→T2 (3 CT)). The long lifetime and high energy level of its 3 CT state have enabled NIC-DMAC as an initiator for photocuring in double patterning applications.
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Affiliation(s)
- Kuan Chen
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yanju Luo
- Analytical & Testing Center, Sichuan University, Chengdu, 610064, China
| | - Ming Sun
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Chuanhao Liu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Mengjiao Jia
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Caixia Fu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xingsha Shen
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Chuan Li
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xujun Zheng
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xuemei Pu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yan Huang
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Zhiyun Lu
- Key Laboratory of Green Chemistry and Technology (Ministry of Education), College of Chemistry, Sichuan University, Chengdu, 610064, China
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22
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Li H, Zhang J, Zhang Q. Manipulation of hot-carrier cooling dynamics in CsPbBr3 quantum dots via site-selective ligand engineering. J Chem Phys 2023; 159:214707. [PMID: 38047513 DOI: 10.1063/5.0175915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 11/14/2023] [Indexed: 12/05/2023] Open
Abstract
Prolonging the lifetime of photoinduced hot carriers in lead-halide perovskite quantum dots (QDs) is highly desirable because it can help improve the photovoltaic conversion efficiency. Ligand engineering has recently become a promising strategy to achieve this; nevertheless, mechanistic studies in this field remain limited. Herein, we propose a new scenario of ligand engineering featuring Pb2+/Br- site-selective capping on the surface of CsPbBr3 QDs. Through joint observations of temperature-dependent photoluminescence, ultrafast transient absorption, and Raman spectroscopy of the two contrasting model systems of CsPbBr3 QDs (i.e., capping with organic ligand only vs hybrid organic/inorganic ligands), we reveal that the phononic regulation of Pb-Br stretching at the Br-site (relative to Pb-site) leads to a larger suppression of charge-phonon coupling due to a stronger polaronic screening effect, thereby more effectively retarding the hot-carrier cooling process. This work opens a new route for the manipulation of hot-carrier cooling dynamics in perovskite systems via site-selective ligand engineering.
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Affiliation(s)
- Hui Li
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jiachen Zhang
- Hefei National Research Center for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qun Zhang
- Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Research Center for Physical Sciences at the Microscale, Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui 230088, China
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23
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Gong N, Lai R, Xing S, Liu Z, Mo J, Man T, Li Z, Di D, Du J, Tan D, Liu X, Qiu J, Xu B. Electronic State Engineering in Perovskite-Cerium-Composite Nanocrystals toward Enhanced Triplet Annihilation Upconversion. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2305069. [PMID: 37870173 DOI: 10.1002/advs.202305069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/30/2023] [Indexed: 10/24/2023]
Abstract
Wavelength conversion based on hybrid inorganic-organic sensitized triplet-triplet annihilation upconversion (TTA-UC) is promising for applications such as photovoltaics, light-emitting-diodes, photocatalysis, additive manufacturing, and bioimaging. The efficiency of TTA-UC depends on the population of triplet excitons involved in triplet energy transfer (TET), the driving force in TET, and the coupling strength between the donor and acceptor. Consequently, achieving highly efficient TTA-UC necessitates the precise control of the electronic states of inorganic donors. However, conventional covalently bonded nanocrystals (NCs) face significant challenges in this regard. Herein, a novel strategy to exert control over electronic states is proposed, thereby enhancing TET and TTA-UC by incorporating ionic-bonded CsPbBr3 and lanthanide Ce3+ ions into composite NCs. These composite-NCs exhibit high photoluminescence quantum yield, extended single-exciton lifetime, quantum confinement, and uplifted energy levels. This engineering strategy of electronic states engendered a comprehensive impact, augmenting the population of triplet excitons participating in the TET process, enhancing coupling strength and the driving force, ultimately leading to an unconventional, dopant concentration-dependent nonlinear enhancement of UC efficiency. This work not only advances fundamental understanding of hybrid TTA-UC but also opens a door for the creation of other ionic-bonded composite NCs with tunable functionalities, promising innovations for next-generation optoelectronic applications.
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Affiliation(s)
- Nan Gong
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Runchen Lai
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Shiyu Xing
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - ZhengZheng Liu
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), 201800, Shanghai, China
| | - Junyao Mo
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Tao Man
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Zicheng Li
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Dawei Di
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Juan Du
- State Key Laboratory of High Field Laser Physics and CAS Center for Excellence in Ultra-intense Laser Science, Shanghai Institute of Optics and Fine Mechanics (SIOM), Chinese Academy of Sciences (CAS), 201800, Shanghai, China
| | - Dezhi Tan
- Zhejiang Lab, 311100, Hangzhou, China
| | - Xiaofeng Liu
- College of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Jianrong Qiu
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
| | - Beibei Xu
- State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, China
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24
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Zhou X, Zhao MH, Yao SM, Dong H, Wang Y, Chen B, Xing X, Li MR. Calibration of local chemical pressure by optical probe. Natl Sci Rev 2023; 10:nwad190. [PMID: 37565188 PMCID: PMC10411671 DOI: 10.1093/nsr/nwad190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/15/2023] [Accepted: 06/26/2023] [Indexed: 08/12/2023] Open
Abstract
Chemical stabilization of a high-pressure metastable state is a major challenge for the development of advanced materials. Although chemical pressure (Pchem) can effectively simulate the effect of physical pressure (Pphy), experimental calibration of the pressure passed to local structural motifs, denoted as local chemical pressure (Pchem-Δ) which significantly governs the function of solid materials, remains absent due to the challenge of probing techniques. Here we establish an innovative methodology to experimentally calibrate the Pchem-Δ and build a bridge between Pchem and Pphy via an optical probe strategy. Site-selective Bi3+-traced REVO4 (RE = Y, Gd) is adopted as a prototype to introduce Bi3+ optical probes and on-site sense of the Pchem-Δ experienced by the REO8 motif. The cell compression of RE0.98Bi0.02VO4 under Pphy is chemically simulated by smaller-ion substitution (Sc3+ → RE3+) in RE0.98-xScxBi0.02VO4. The consistent red shift (Δλ) of the emission spectra of Bi3+, which is dominated by locally pressure-induced REO8 dodecahedral variation in RE0.98Bi0.02VO4 (Pphy) and RE0.98-xScxBi0.02VO4 (Pchem-Δ), respectively, is evidence of their similar pressure-dependent local structure evolution. This innovative Δλ-based experimental calibration of Pchem-Δ in the crystal-field dimension portrays the anisotropic transmission of Pchem to the local structure and builds a bridge between Pchem-Δ and Pphy to guide a new perspective for affordable and practical interception of metastable states.
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Affiliation(s)
- Xiao Zhou
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Mei-Huan Zhao
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Shan-Ming Yao
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
| | - Hongliang Dong
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Yonggang Wang
- School of Materials Science and Engineering, Peking University, Beijing 100871, China
| | - Bin Chen
- Center for High Pressure Science and Technology Advanced Research, Shanghai 201203, China
| | - Xianran Xing
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China
| | - Man-Rong Li
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, China
- School of Science, Hainan University, Haikou 570228, China
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25
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Lai Y, Zhou Y, Liu H, Guo T, Zou A, Wang L, Chen Y, Zhao X, Zheng K, Tong X, Wang R. Fast and Reversible Quasi-Solid-State Anion Exchange in Highly Luminescent CsPbX 3 Perovskite Nanocrystals for Dual-Mode Encryption-Decryption. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2304377. [PMID: 37649212 DOI: 10.1002/smll.202304377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/07/2023] [Indexed: 09/01/2023]
Abstract
Solid-state anion exchange method is easy to handle and beneficial to improve stability of CsPbX3 (X = Cl, Br, I) perovskites nanocrystals (NCs) with respect to anion exchange in liquid phase. However, the corresponding exchange rate is rather slow due to the limited diffusion rate of anions from solid phases, resulting in mixed-halide perovskite NCs. Herein, a fast and reversible post-synthetic quasi-solid-state anion exchange method in CsPbX3 NCs with inorganic potassium halide KX salts/polyvinylpyrrolidone (PVP) thin film is firstly reported. Original morphology of the exchanged NCs is well-preserved for all samples. Complete anion exchange from Br- to Cl- or I- is successfully achieved in CsPbX3 NCs within ≈20 min through possible vacancies-assisted ion exchange mechanism, under ambient conditions and vice versa. Particularly, Br- -exchanged CsPbCl3 and CsPbI3 NCs exhibit improved optical properties. Encouraged by the attractive fluorescence and persistent luminescence as well as good stability of the resulted CsPbX3 NCs, an effective dual-mode information storage-reading application is demonstrated. It is believed that this method can open a new avenue for the synthesis of other direct-synthesis challenging quantum-confined perovskite NCs/nanoplates/nanodisks or CsSnX3 NCs/thin film and provide an opportunity for advanced information storage compatible for practical applications.
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Affiliation(s)
- Yueling Lai
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Yufeng Zhou
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Hongjiang Liu
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Tongyin Guo
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Anqi Zou
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Lianju Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Yiqing Chen
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Xianglong Zhao
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Kanghui Zheng
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
| | - Xin Tong
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Ruilin Wang
- College of Materials Science and Engineering, Sichuan University, Chengdu, 610065, P. R. China
- Engineering Research Center of Alternative Energy Materials & Devices, Ministry of Education, Chengdu, 610065, P. R. China
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26
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Li M, Liu W, Yang T, Xu Q, Mu H, Han J, Cao K, Tan X, Wang K, Yang C. Synergistic luminescence effect and high-pressure optical properties of CsPbBr 2Cl@EuMOFs nanocomposites. OPTICS EXPRESS 2023; 31:21576-21585. [PMID: 37381253 DOI: 10.1364/oe.494143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 05/22/2023] [Indexed: 06/30/2023]
Abstract
Metal-organic frameworks (MOFs) are a class of highly porous materials that have garnered significant attention in the field of optoelectronics due to their exceptional properties. In this study, CsPbBr2Cl@EuMOFs nanocomposites were synthesized using a two-step method. The fluorescence evolution of the CsPbBr2Cl@EuMOFs was investigated under high pressure, revealing a synergistic luminescence effect between CsPbBr2Cl and Eu3+. The study found that the synergistic luminescence of CsPbBr2Cl@EuMOFs remains stable even under high pressure, and there is no energy transfer among different luminous centers. These findings provide a meaningful case for future research on nanocomposites with multiple luminescent centers. Additionally, CsPbBr2Cl@EuMOFs exhibit a sensitive color-changing mechanism under high pressure, making them a promising candidate for pressure calibration via the color change of the MOF materials.
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27
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Vinçon I, Barfüßer A, Feldmann J, Akkerman QA. Quantum Dot Metal Salt Interactions Unraveled by the Sphere of Action Model. J Am Chem Soc 2023. [PMID: 37267531 DOI: 10.1021/jacs.3c03582] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Postsynthetic metal salt treatments are frequently employed in the luminescence enhancement of quantum dots (QDs); however, its microscopic picture remains unclear. CsPbBr3-QDs, featuring strong excitonic absorption and high photoluminescence (PL) quantum yield, are ideal QDs to unravel the intricate interaction between QDs and such surface-bound metal salts. Herein, we study this interaction based on the controlled PL quenching of CsPbBr3-QDs with BiBr3. Upon the addition of BiBr3, an instant and complete PL quenching is observed, which can be fully recovered after the addition of an excess of PbBr2. This, together with the complete preservation of the excitonic absorption suggests a surface-driven adsorption equilibrium. Additionally, time-resolved studies reveal a non-homogeneous surface trap formation. Based on the so-called sphere of action model for the adsorption process, we show that already a single BiBr3 adsorption suffices to completely quench a QD's luminescence. This approach is expanded to analyze size-, ligand-, and metal-dependent quenching dynamics. Facet junctions are identified as regions of enhanced surface reactivity. A Langmuir-type ligand coverage is exposed with a strong impact on adsorption. Our results provide a detailed mechanistic insight into postsynthetic interaction of QDs with metal salts, opening pathways for future surface manipulations.
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Affiliation(s)
- Ilka Vinçon
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Anja Barfüßer
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
| | - Quinten A Akkerman
- Chair for Photonics and Optoelectronics, Nano-Institute Munich, Department of Physics, Ludwig-Maximilians-University Munich, 80539 Munich, Germany
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28
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Liu Y, Wang C, Chen G, Wang S, Yu Z, Wang T, Ke W, Fang G. A generic lanthanum doping strategy enabling efficient lead halide perovskite luminescence for backlights. Sci Bull (Beijing) 2023:S2095-9273(23)00277-3. [PMID: 37127489 DOI: 10.1016/j.scib.2023.04.023] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 03/18/2023] [Accepted: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Metal halide perovskites films have attracted great interest because of their solution-proceed fabrication and potential applications for next-generation displays. However, their non-ideal photoluminescence quantum efficiency (PLQE) and stability still does not meet the requirements of displays. Here, we adopt lanthanum ion (La3+) doping strategy to enhance its luminescence performance and the possibility of taking it to commercialization. In addition to the entry of lanthanum ions into the lattice to greatly improve the crystal quality, the excess La3+ gives rise to the formation of newly developed formamidinium cesium lanthanum bromine, (FA, Cs)2LaBr5, which provides additional energy transport pathways, therefore concentrating more energy onto the perovskite host. Consequently, a near-unity PLQE of 99.5% is realized in standardized green-emission cesium (Cs)/formamidinium (FA) mixed FA0.7Cs0.3PbBr3 perovskite films. The introduction of La3+ can also lead to markedly stability with nearly 1000 days' shelf storage half-lifetime and 400 hours' light-irradiation T90 lifetime as well as much-enhanced color purity. Moreover, the films with La3+ doping enable full-visible spectral enhancement and high-performance white light emission and trichromatic luminescence with 98.9% coverage of the color gamut area required for the Rec. 2020 standard, which suggest that perovskite films have great application potential for backlights in liquid crystal display technologies.
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Affiliation(s)
- Yongjie Liu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Cheng Wang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Guoyi Chen
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Shuxin Wang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Zhiqiu Yu
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Ti Wang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Weijun Ke
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China.
| | - Guojia Fang
- Key Laboratory of Artificial Micro- and Nano-Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China.
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29
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Chaudhary M, Karmakar A, Mishra V, Bhattacharya A, Mumbaraddi D, Mar A, Michaelis VK. Effect of aliovalent bismuth substitution on structure and optical properties of CsSnBr 3. Commun Chem 2023; 6:75. [PMID: 37076629 PMCID: PMC10115781 DOI: 10.1038/s42004-023-00874-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Accepted: 04/04/2023] [Indexed: 04/21/2023] Open
Abstract
Aliovalent substitution of the B component in ABX3 metal halides has often been proposed to modify the band gap and thus the photovoltaic properties, but details about the resulting structure have remained largely unknown. Here, we examine these effects in Bi-substituted CsSnBr3. Powder X-ray diffraction (XRD) and solid-state 119Sn, 133Cs and 209Bi nuclear magnetic resonance (NMR) spectroscopy were carried out to infer how Bi substitution changes the structure of these compounds. The cubic perovskite structure is preserved upon Bi-substitution, but with disorder in the B site occurring at the atomic level. Bi atoms are randomly distributed as they substitute for Sn atoms with no evidence of Bi segregation. The absorption edge in the optical spectra shifts from 1.8 to 1.2 eV upon Bi-substitution, maintaining a direct band gap according to electronic structure calculations. It is shown that Bi-substitution improves resistance to degradation by inhibiting the oxidation of Sn.
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Affiliation(s)
- Madhusudan Chaudhary
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Abhoy Karmakar
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Vidyanshu Mishra
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Amit Bhattacharya
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Dundappa Mumbaraddi
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Arthur Mar
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada
| | - Vladimir K Michaelis
- Department of Chemistry, University of Alberta, Edmonton, Alberta, T6G 2G2, Canada.
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30
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Kerner RA, Cohen AV, Xu Z, Kirmani AR, Park SY, Harvey SP, Murphy JP, Cawthorn RC, Giebink NC, Luther JM, Zhu K, Berry JJ, Kronik L, Rand BP. Electrochemical Doping of Halide Perovskites by Noble Metal Interstitial Cations. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2302206. [PMID: 37052234 DOI: 10.1002/adma.202302206] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/29/2023] [Indexed: 06/04/2023]
Abstract
Metal halide perovskites are an attractive class of semiconductors, but it has proven difficult to control their electronic doping by conventional strategies due to screening and compensation by mobile ions or ionic defects. Noble-metal interstitials represent an under-studied class of extrinsic defects that plausibly influence many perovskite-based devices. In this work, doping of metal halide perovskites is studied by electrochemically formed Au+ interstitial ions, combining experimental data on devices with a computational analysis of Au+ interstitial defects based on density functional theory (DFT). Analysis suggests that Au+ cations can be easily formed and migrate through the perovskite bulk via the same sites as iodine interstitials (Ii + ). However, whereas Ii + compensates n-type doping by electron capture, the noble-metal interstitials act as quasi-stable n-dopants. Experimentally, voltage-dependent, dynamic doping by current density-time (J-t), electrochemical impedance, and photoluminescence measurements are characterized. These results provide deeper insight into the potential beneficial and detrimental impacts of metal electrode reactions on long-term performance of perovskite photovoltaic and light-emitting diodes, as well as offer an alternative doping explanation for the valence switching mechanism of halide-perovskite-based neuromorphic and memristive devices.
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Affiliation(s)
- Ross A Kerner
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Ayala V Cohen
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovoth, 76100, Israel
| | - Zhaojian Xu
- Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA
| | - Ahmad R Kirmani
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - So Yeon Park
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Steven P Harvey
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - John P Murphy
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Robert C Cawthorn
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Noel C Giebink
- Department of Electrical Engineering, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Joseph M Luther
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Kai Zhu
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
| | - Joseph J Berry
- National Renewable Energy Laboratory, Golden, CO, 80401, USA
- Department of Physics, University of Colorado Boulder, Boulder, CO, 80309, USA
- Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Leeor Kronik
- Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovoth, 76100, Israel
| | - Barry P Rand
- Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA
- Andlinger Center for Energy and the Environment, Princeton University, Princeton, NJ, 08544, USA
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31
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Zhao Q, Chen F, Li C, Shang C, Huang Q, Yan B, Zhu H, Wang K, Zhang W, Zhou T, Ding J. Challenges and developments for the blue perovskite nanocrystal light-emitting diodes. Dalton Trans 2023; 52:3921-3941. [PMID: 36939177 DOI: 10.1039/d3dt00122a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Perovskite nanomaterials have been highly thought as next-generation light emitters after recent development owing to their benefits of simple synthesis, low-cost, large-area, and wide color gamut. Encouragingly, the external quantum efficiencies (EQEs) of green, red, and near-infrared perovskite light-emitting diodes (PeLEDs) have exceeded more than 20%. However, the performance of the blue PeLEDs is still lower than other analogs, which severely limits the applications of PeLEDs in future full-color displays. Herein, we have reviewed the advances in blue perovskite NCs and their applications in blue PeLEDs. Promising blue perovskite emitters and strategies for fabricating highly efficient blue PeLEDs based on perovskite NCs are investigated and highlighted. Moreover, we point out the main challenges in blue perovskite NC LEDs including low electroluminescence efficiency (EL), spectral instability, the difficulty of charge injection, and device optimization. The perspectives for the further development of blue PeLEDs are also presented.
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Affiliation(s)
- Qiqi Zhao
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Feitong Chen
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Changqian Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Chenyu Shang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Qi Huang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Bin Yan
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Huiling Zhu
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Kunhua Wang
- College of Energy Storage Technology, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Weiwei Zhang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Tianliang Zhou
- College of Materials, Xiamen University, Xiamen 361005, China.
| | - Jianxu Ding
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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Choi JY, Wang M, Check B, Stodolka M, Tayman K, Sharma S, Park J. Linker-Based Bandgap Tuning in Conductive MOF Solid Solutions. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206988. [PMID: 36642807 DOI: 10.1002/smll.202206988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Revised: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Herein, the synthesis of Cu3 (HAB)x (TATHB)2-x (HAB: hexaaminobenzene, TATHB: triaminotrihydroxybenzene) is reported. Synthetic improvement of Cu3 (TATHB)2 leads to a more crystalline framework with higher electrical conductivity value than previously reported. The improved crystallinity and analogous structure between TATHB and HAB enable the synthesis of Cu3 (HAB)x (TATHB)2-x with ligand compositions precisely controlled by precursor ratios. The electrical conductivity is tuned from 4.2 × 10-8 to 2.9 × 10-5 S cm-1 by simply increasing the nitrogen content in the crystal lattice. Furthermore, computational calculation supports that the solid solution facilitates the band structure tuning. It is envisioned that the findings not only shed light on the ligand-dependent structure-property relationship but create new prospects in synthesizing multicomponent electrically conductive metal-organic frameworks (MOFs) for tailoring optoelectronic device applications.
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Affiliation(s)
- Ji Yong Choi
- Department of Chemistry, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Minyan Wang
- Materials Science & Engineering Program, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Brianna Check
- Department of Chemistry, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Michael Stodolka
- Department of Chemistry, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Kyle Tayman
- Department of Chemistry, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Sandeep Sharma
- Department of Chemistry, University of Colorado Boulder, Boulder, CO, 80309, USA
| | - Jihye Park
- Department of Chemistry, University of Colorado Boulder, Boulder, CO, 80309, USA
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Lin H, Wei Q, Ke B, Lin W, Zhao H, Zou B. Excitation-Wavelength-Dependent Emission Behavior in (NH 4) 2SnCl 6 via Sb 3+ Dopant. J Phys Chem Lett 2023; 14:1460-1469. [PMID: 36740812 PMCID: PMC9940208 DOI: 10.1021/acs.jpclett.2c03287] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Accepted: 01/27/2023] [Indexed: 06/09/2023]
Abstract
With high photoluminescence efficiency and a simple solution synthesis method, lead halide perovskites are expected to be a promising material for display and illumination. However, the toxicity and environmental sensitivity of lead hinder its potential applications. Here, we introduced Sb3+ ions into the lead-free perovskites derivative (NH4)2SnCl6 via a doping strategy. For the first time we synthesis the excitation-dependent perovskite with dynamically tunable fluorescence from yellow to near-infrared (NIR) emission by varying the UV excitation from 360 to 390 nm at room temperature. The DFT calculations are highly consistent no matter whether the coordination number of Sb3+ is 5 or 6. In contrasting to the early report of Sb triplet emission in the Sb doped perovskite, this material give a mixed self-trapped exciton (STE) emission. The 590 nm emission band is derived from the STE of SbCl5, and the 734 nm NIR emission band is attributed to the Sb-Sn mixed STE, which is supported by DFT calculations and spectral results. This study provides guidance for the design of perovskite phosphors with high efficiency and excitation-dependent properties.
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Affiliation(s)
- Hongjun Lin
- School of Physical Science
and Technology; State Key Laboratory of Featured Metal Materials and
Life-Cycle Safety for Composite Structures; School of Resources, Environments
and Materials, Guangxi University, Nanning530004, China
| | - Qilin Wei
- School of Physical Science
and Technology; State Key Laboratory of Featured Metal Materials and
Life-Cycle Safety for Composite Structures; School of Resources, Environments
and Materials, Guangxi University, Nanning530004, China
| | - Bao Ke
- School of Physical Science
and Technology; State Key Laboratory of Featured Metal Materials and
Life-Cycle Safety for Composite Structures; School of Resources, Environments
and Materials, Guangxi University, Nanning530004, China
| | - Wenchao Lin
- School of Physical Science
and Technology; State Key Laboratory of Featured Metal Materials and
Life-Cycle Safety for Composite Structures; School of Resources, Environments
and Materials, Guangxi University, Nanning530004, China
| | - Hualin Zhao
- School of Physical Science
and Technology; State Key Laboratory of Featured Metal Materials and
Life-Cycle Safety for Composite Structures; School of Resources, Environments
and Materials, Guangxi University, Nanning530004, China
| | - Bingsuo Zou
- School of Physical Science
and Technology; State Key Laboratory of Featured Metal Materials and
Life-Cycle Safety for Composite Structures; School of Resources, Environments
and Materials, Guangxi University, Nanning530004, China
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Roy S, Mahato MK, Prasad E. Electronic effect of substituents on the charge-transfer dynamics at the CsPbBr 3 perovskite-small molecule interface. Phys Chem Chem Phys 2023; 25:4121-4131. [PMID: 36651827 DOI: 10.1039/d2cp04599k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
To push the boundary of the efficiency of perovskite nanocrystal-based photovoltaics, understanding the charge transfer at the interface of these nanocrystals is necessary. In an effort to understand the electronic effects of the substituents in the charge acceptor moiety, three electronically different small molecules (namely, chloranilic acid (CA), p-benzoquinone (BQ), and duroquinone (DQ)) were chosen and their detailed charge transfer dynamics were studied at the CsPbBr3 perovskite nanocrystal-small organic molecule interface using steady state and time-resolved spectroscopic methods. The steady-state absorption and time-resolved emission studies reveal that all three molecules interact with the NCs in the excited state. Femtosecond transient absorption experiments indicate a faster ground-state bleach recovery in the presence of the three acceptors, compared with the pristine NCs. Utilizing band alignment analysis, the faster bleach recovery of the NCs in presence of the acceptors was confirmed to be because of electron transfer from the photo-excited NCs to the acceptor molecules. Moreover, the electron transfer rates fall in the Marcus normal region and can be explained based on the electronic effects of the substituents present on the acceptor molecules.
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Affiliation(s)
- Soumi Roy
- Department of Chemistry, Indian Institute of Technology Madras (IITM), Chennai 600036, India.
| | - Malay Krishna Mahato
- Department of Chemistry, Indian Institute of Technology Madras (IITM), Chennai 600036, India.
| | - Edamana Prasad
- Department of Chemistry, Indian Institute of Technology Madras (IITM), Chennai 600036, India.
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Yang Y, Li Y, Gong W, Guo H, Niu X. Cobalt-doped CsPbBr3 Perovskite Quantum Dots for Photoelectrocatalytic Hydrogen Production via Efficient Charge Transport. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Wu C, Li Y, Xia Z, Ji C, Tang Y, Zhang J, Ma C, Gao J. Enhancing Photoluminescence of CsPb(Cl xBr 1-x) 3 Perovskite Nanocrystals by Fe 2+ Doping. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:533. [PMID: 36770495 PMCID: PMC9920428 DOI: 10.3390/nano13030533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 01/19/2023] [Accepted: 01/20/2023] [Indexed: 06/18/2023]
Abstract
The doping of impurity ions into perovskite lattices has been scrupulously developed as a promising method to stabilize the crystallographic structure and modulate the optoelectronic properties. However, the photoluminescence (PL) of Fe2+-doped mixed halide perovskite NCs is still relatively unexplored. In this work, the Fe2+-doped CsPb(ClxBr1-x)3 nanocrystals (NCs) are prepared by a hot injection method. In addition, their optical absorption, photoluminescence (PL), PL lifetimes, and photostabilities are compared with those of undoped CsPb(Br1-xClx)3 NCs. We find the Fe2+ doping results in the redshift of the absorption edge and PL. Moreover, the full width at half maximums (FWHMs) are decreased, PL quantum yields (QYs) are improved, and PL lifetimes are extended, suggesting the defect density is reduced by the Fe2+ doping. Moreover, the photostability is significantly improved after the Fe2+ doping. Therefore, this work reveals that Fe2+ doping is a very promising approach to modulate the optical properties of mixed halide perovskite NCs.
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Affiliation(s)
- Chang Wu
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yan Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Zhengyao Xia
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Cheng Ji
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Yuqian Tang
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Jinlei Zhang
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Chunlan Ma
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
| | - Ju Gao
- Jiangsu Key Laboratory of Micro and Nano Heat Fluid Flow Technology and Energy Application, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China
- School Optoelect Engn, Zaozhuang University, Zaozhuang 277160, China
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Vighnesh K, Wang S, Liu H, Rogach AL. Hot-Injection Synthesis Protocol for Green-Emitting Cesium Lead Bromide Perovskite Nanocrystals. ACS NANO 2022; 16:19618-19625. [PMID: 36484795 DOI: 10.1021/acsnano.2c11689] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
All-inorganic cesium lead bromide (CsPbBr3) nanocrystals are one of the prominent members of the metal halide perovskite family of semiconductor materials, which possess considerable stability and excellent optoelectronic properties leading to a multitude of their potential applications in solar cells, light-emitting devices, photodetectors, and lasers. Hot-injection strategy is a popular method used to synthesize CsPbBr3 nanocrystals, which provides a convenient route to produce them in the shape of rather monodisperse nanocubes. As in any synthetic procedure, there are different factors like temperature, surface ligands, precursor concentration, as well as necessary postpreparation purification steps. Herein, we provide a comprehensive hot-injection synthesis protocol for CsPbBr3 nanocrystals, outlining intrinsic and extrinsic factors that affect its reproducibility and elucidating in detail the precursor solution preparation, nanocrystal formation and growth, and postpreparative purification and storage conditions to allow for the fabrication of high-quality green-emitting material.
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Affiliation(s)
- Kunnathodi Vighnesh
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., P.R. China 999077
| | - Shixun Wang
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., P.R. China 999077
| | - Haochen Liu
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., P.R. China 999077
| | - Andrey L Rogach
- Department of Materials Science and Engineering, and Centre for Functional Photonics (CFP), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong S.A.R., P.R. China 999077
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Cho Y, Kim H, Lee S, Lee E, Hwang Y, Kim H, Seo S, Tran NQ, Kim WB, Jung HS, Kim J, Jeong MS, Lee H. Inductive Effect of Lewis Acidic Dopants on the Band Levels of Perovskite for a Photocatalytic Reaction. ACS APPLIED MATERIALS & INTERFACES 2022; 14:53603-53614. [PMID: 36404762 DOI: 10.1021/acsami.2c11936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Band-edge modulation of halide perovskites as photoabsorbers plays significant roles in the application of photovoltaic and photochemical systems. Here, Lewis acidity of dopants (M) as the new descriptor of engineering the band-edge position of the perovskite is investigated in the gradiently doped perovskite along the core-to-surface (CsPbBr3-CsPb1-xMxBr3). Reducing M-bromide bond strength with an increase in hardness of acidic M increases the electron ability of basic Br, thus strengthening the Pb-Br orbital coupling in M-Pb-Br, noted as the inductive effect of dopants. Especially, the highly hard Lewis acidic Mg localized in the outer position of the perovskite induces the increase of work function and then shifts band edge upward along the core-to-surface of the perovskite. Thus, charge separation driven by the dopant-induced internal electric field induces the slow annihilation of the excited holes, improving the slow aromatic Csp3-H dissociation in the photocatalytic oxidation process by ∼211% (491.39 μmol g-1 h-1) enhancements, compared with undoped nanocrystals.
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Affiliation(s)
- Yunhee Cho
- Department of Chemistry, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Hyojung Kim
- Artificial Atom and Quantum Materials Center, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Sanggil Lee
- Center for Research Equipment, Division of Scientific Instrumentation & Management, Korea Basic Science Institute, Gwahak-ro, Yuseong-gu, Daejeon34133, Republic of Korea
| | - Eunji Lee
- Department of Energy Science, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Yosep Hwang
- Department of Chemistry, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Hyunjung Kim
- Creative Research Institute, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Sohyeon Seo
- Department of Chemistry, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Creative Research Institute, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Ngoc Quang Tran
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Won Bin Kim
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Hyun Suk Jung
- School of Advanced Materials Science and Engineering, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Jeongyong Kim
- Department of Energy Science, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
| | - Mun Seok Jeong
- Department of Energy Engineering, Hanyang University, Seoul04763, Republic of Korea
| | - Hyoyoung Lee
- Department of Chemistry, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Center for Integrated Nanostructure Physics (CINAP), Institute for Basic Science (IBS), Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Creative Research Institute, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
- Department of Biophysics, Sungkyunkwan University (SKKU), Suwon16419, Republic of Korea
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Sun R, Zhou D, Ding Y, Wang Y, Wang Y, Zhuang X, Liu S, Ding N, Wang T, Xu W, Song H. Efficient single-component white light emitting diodes enabled by lanthanide ions doped lead halide perovskites via controlling Förster energy transfer and specific defect clearance. LIGHT, SCIENCE & APPLICATIONS 2022; 11:340. [PMID: 36470864 PMCID: PMC9722690 DOI: 10.1038/s41377-022-01027-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 10/10/2022] [Accepted: 10/25/2022] [Indexed: 05/25/2023]
Abstract
Currently, a major challenge for metal-halide perovskite light emitting diodes (LEDs) is to achieve stable and efficient white light emission due to halide ion segregation. Herein, we report a promising method to fabricate white perovskite LEDs using lanthanide (Ln3+) ions doped CsPbCl3 perovskite nanocrystals (PeNCs). First, K+ ions are doped into the lattice to tune the perovskite bandgap by partially substituting Cs+ ions, which are well matched to the transition energy of some Ln3+ ions from the ground state to the excited state, thereby greatly improving the Förster energy transfer efficiency from excitons to Ln3+ ions. Then, creatine phosphate (CP), a phospholipid widely found in organisms, serves as a tightly binding surface-capping multi-functional ligand which regulates the film formation and enhances the optical and electrical properties of PeNC film. Consequently, the Eu3+ doped PeNCs based-white LEDs show a peak luminance of 1678 cd m-2 and a maximum external quantum efficiency (EQE) of 5.4%, demonstrating excellent performance among existing white PeNC LEDs from a single chip. Furthermore, the method of bandgap modulation and the defect passivation were generalized to other Ln3+ ions doped perovskite LEDs and successfully obtained improved electroluminescence (EL). This work demonstrates the comprehensive and universal strategies in the realization of highly efficient and stable white LEDs via single-component Ln3+ ions doped PeNCs, which provides an optimal solution for the development of low-cost and simple white perovskite LEDs.
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Affiliation(s)
- Rui Sun
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Donglei Zhou
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
| | - Yujiao Ding
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Yue Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Yuqi Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Xinmeng Zhuang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Shuainan Liu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Nan Ding
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Tianyuan Wang
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Wen Xu
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China
| | - Hongwei Song
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, 130012, China.
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Mu Y, He Z, Wang K, Pi X, Zhou S. Recent progress and future prospects on halide perovskite nanocrystals for optoelectronics and beyond. iScience 2022; 25:105371. [PMID: 36345343 PMCID: PMC9636552 DOI: 10.1016/j.isci.2022.105371] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
As an emerging new class of semiconductor nanomaterials, halide perovskite (ABX3, X = Cl, Br, or I) nanocrystals (NCs) are attracting increasing attention owing to their great potential in optoelectronics and beyond. This field has experienced rapid breakthroughs over the past few years. In this comprehensive review, halide perovskite NCs that are either freestanding or embedded in a matrix (e.g., perovskites, metal-organic frameworks, glass) will be discussed. We will summarize recent progress on the synthesis and post-synthesis methods of halide perovskite NCs. Characterizations of halide perovskite NCs by using a variety of techniques will be present. Tremendous efforts to tailor the optical and electronic properties of halide perovskite NCs in terms of manipulating their size, surface, and component will be highlighted. Physical insights gained on the unique optical and charge-carrier transport properties will be provided. Importantly, the growing potential of halide perovskite NCs for advancing optoelectronic applications and beyond including light-emitting devices (LEDs), solar cells, scintillators and X-ray imaging, lasers, thin-film transistors (TFTs), artificial synapses, and light communication will be extensively discussed, along with prospecting their development in the future.
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Affiliation(s)
- Yuncheng Mu
- School of Materials, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
| | - Ziyu He
- Department of Material Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS, UK
| | - Kun Wang
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
| | - Xiaodong Pi
- State Key Laboratory of Silicon Materials and School of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang 310027, China
- Institute of Advanced Semiconductors and Zhejiang Provincial Key Laboratory of Power Semiconductor Materials and Devices, Hangzhou Innovation Center, Zhejiang University, Hangzhou, Zhejiang 311215, China
| | - Shu Zhou
- School of Materials, Shenzhen Campus of Sun Yat-sen University, Shenzhen, Guangdong 518107, China
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Ekanayaka TK, Richmond D, McCormick M, Nandyala SR, Helfrich HC, Sinitskii A, Pikal JM, Ilie CC, Dowben PA, Yost AJ. Surface Versus Bulk State Transitions in Inkjet-Printed All-Inorganic Perovskite Quantum Dot Films. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3956. [PMID: 36432242 PMCID: PMC9697151 DOI: 10.3390/nano12223956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 11/05/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
The anion exchange of the halides, Br and I, is demonstrated through the direct mixing of two pure perovskite quantum dot solutions, CsPbBr3 and CsPbI3, and is shown to be both facile and result in a completely alloyed single phase mixed halide perovskite. Anion exchange is also observed in an interlayer printing method utilizing the pure, unalloyed perovskite solutions and a commercial inkjet printer. The halide exchange was confirmed by optical absorption spectroscopy, photoluminescent spectroscopy, X-ray diffraction, and X-ray photoemission spectroscopy characterization and indicates that alloying is thermodynamically favorable, while the formation of a clustered alloy is not favored. Additionally, a surface-to-bulk photoemission core level transition is observed for the Cs 4d photoemission feature, which indicates that the electronic structure of the surface is different from the bulk. Time resolved photoluminescence spectroscopy indicates the presence of multiple excitonic decay features, which is argued to originate from states residing at surface and bulk environments.
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Affiliation(s)
- Thilini K. Ekanayaka
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Dylan Richmond
- Department of Physics, State University of New York-Oswego, Oswego, NY 13126, USA
| | - Mason McCormick
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Shashank R. Nandyala
- Department of Electrical and Computer Engineering, University of Wyoming, Laramie, WY 82071, USA
| | - Halle C. Helfrich
- Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA
- Department of Physics, Pittsburg State University, Pittsburg, KS 66762, USA
| | - Alexander Sinitskii
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68588-0304, USA
| | - Jon M. Pikal
- Department of Electrical and Computer Engineering, University of Wyoming, Laramie, WY 82071, USA
| | - Carolina C. Ilie
- Department of Physics, State University of New York-Oswego, Oswego, NY 13126, USA
| | - Peter A. Dowben
- Department of Physics and Astronomy, University of Nebraska-Lincoln, Lincoln, NE 68588, USA
| | - Andrew J. Yost
- Department of Physics, Oklahoma State University, Stillwater, OK 74078, USA
- Oklahoma Photovoltaic Research Institute, Oklahoma State University, Stillwater, OK 74078, USA
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Chowdhury TH, Reo Y, Yusoff ARBM, Noh Y. Sn-Based Perovskite Halides for Electronic Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203749. [PMID: 36257820 PMCID: PMC9685468 DOI: 10.1002/advs.202203749] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Indexed: 06/16/2023]
Abstract
Because of its less toxicity and electronic structure analogous to that of lead, tin halide perovskite (THP) is currently one of the most favorable candidates as an active layer for optoelectronic and electric devices such as solar cells, photodiodes, and field-effect transistors (FETs). Promising photovoltaics and FETs performances have been recently demonstrated because of their desirable electrical and optical properties. Nevertheless, THP's easy oxidation from Sn2+ to Sn4+ , easy formation of tin vacancy, uncontrollable film morphology and crystallinity, and interface instability severely impede its widespread application. This review paper aims to provide a basic understanding of THP as a semiconductor by highlighting the physical structure, energy band structure, electrical properties, and doping mechanisms. Additionally, the key chemical instability issues of THPs are discussed, which are identified as the potential bottleneck for further device development. Based on the understanding of the THPs properties, the key recent progress of THP-based solar cells and FETs is briefly discussed. To conclude, current challenges and perspective opportunities are highlighted.
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Affiliation(s)
- Towhid H. Chowdhury
- Department of Chemical EngineeringPohang University of Science and Technology77 Cheongam‐Ro, Nam‐GuPohang37673Republic of Korea
| | - Youjin Reo
- Department of Chemical EngineeringPohang University of Science and Technology77 Cheongam‐Ro, Nam‐GuPohang37673Republic of Korea
| | - Abd Rashid Bin Mohd Yusoff
- Department of Chemical EngineeringPohang University of Science and Technology77 Cheongam‐Ro, Nam‐GuPohang37673Republic of Korea
| | - Yong‐Young Noh
- Department of Chemical EngineeringPohang University of Science and Technology77 Cheongam‐Ro, Nam‐GuPohang37673Republic of Korea
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Du L, Shi X, Duan M, Shi Y. Pressure-Induced Tunable Charge Carrier Dynamics in Mn-Doped CsPbBr 3 Perovskite. MATERIALS (BASEL, SWITZERLAND) 2022; 15:6984. [PMID: 36234324 PMCID: PMC9571311 DOI: 10.3390/ma15196984] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/22/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
All-inorganic perovskite materials (CsPbX3) have attracted increasing attention due to their excellent photoelectric properties and stable physical and chemical properties. The dynamics of charge carriers affect the photoelectric conversion efficiencies of perovskite materials. Regulating carrier dynamics by changing pressure is interesting with respect to revealing the key microphysical processes involved. Here, ultrafast spectroscopy combined with high-pressure diamond anvil cell technology was used to study the generation and transfer of photoinduced carriers of a Mn-doped inorganic perovskite CsPbBr3 material under pressure. Three components were obtained and assigned to thermal carrier relaxation, optical phonon-acoustic phonon scattering and Auger recombination. The time constants of the three components changed under the applied pressures. Our experimental results show that pressure can affect the crystal structure of Mn-doped CsPbBr3 to regulate carrier dynamics. The use of metal doping not only reduces the content of toxic substances but also improves the photoelectric properties of perovskite materials. We hope that our study can provide dynamic experimental support for the exploration of new photoelectric materials.
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Affiliation(s)
- Luchao Du
- Correspondence: (L.D.); (Y.S.); Tel.: +86-17767769265 (L.D.)
| | | | | | - Ying Shi
- Correspondence: (L.D.); (Y.S.); Tel.: +86-17767769265 (L.D.)
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Mei Y, Lu X, Dong C, Tan F, Cui M, Haruta Y, Yeddu V, Wang M, Liu K, Yue G, Gao Y, Qu S, Qin C, Zhang W, Ding L, Saidaminov MI, Wang Z. Synergistic Effects of Bipolar Additives on Grain Boundary-Mediated Charge Transport for Efficient Carbon-Based Inorganic Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:38963-38971. [PMID: 35979625 DOI: 10.1021/acsami.2c11895] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Carbon-based all-inorganic CsPbIxBr3-x perovskite solar cells offer high stability against heat and humidity and a suitable band gap for tandem and semitransparent photovoltaics. In CsPbIxBr3-x perovskite films, the defects at grain boundaries (GBs) cause charge trapping, reducing the efficiency of the cell. Electronic deactivation of GB has been a conventional strategy to suppress the trapping, but at the cost of charge carrier transport through the boundaries. Here, we turn the GBs into benign charge transport pathways with the aid of bipolar charge transport semiconductors, namely, Ti3C2TX (MXene) and Spiro-OMeTAD, respectively. Thanks to the synergistic effects of both n- and p-type transport media, the charge transport is improved and balanced at the GBs. As a result, the cells achieve an efficiency of 12.7%, the highest among all low-temperature-processed carbon-based inorganic perovskite solar cells. Benign GBs also lead to enhanced light and aging stabilities. Our work demonstrates a proof-of-concept strategy of benign electronic modulation of GBs for solution-processed perovskite solar cells.
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Affiliation(s)
- Yantao Mei
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Xiayao Lu
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Chen Dong
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Furui Tan
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Minghuan Cui
- Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, Henan Normal University, Xinxiang 453007, P. R. China
| | - Yuki Haruta
- Department of Chemistry and Electrical & Computer Engineering, Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria V8P5C2, Canada
- Graduate School of Energy Science, Kyoto University, Kyoto 606-8501, Japan
| | - Vishal Yeddu
- Department of Chemistry and Electrical & Computer Engineering, Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria V8P5C2, Canada
| | - Mengyue Wang
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Kong Liu
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
| | - Gentian Yue
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Yueyue Gao
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Shengchun Qu
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
| | - Chaochao Qin
- Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications, Henan Normal University, Xinxiang 453007, P. R. China
| | - Weifeng Zhang
- Key Laboratory of Photovoltaic Materials, Henan University, Kaifeng 475004, P. R. China
| | - Liming Ding
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Makhsud I Saidaminov
- Department of Chemistry and Electrical & Computer Engineering, Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Victoria V8P5C2, Canada
| | - Zhijie Wang
- Key Laboratory of Semiconductor Materials Science, Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, P. R. China
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45
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Zhang Y, Fan C, Tang J, Huang G, Qiang X, Fu Y, Zhou W, Wu J, Huang S. Systematic Microwave-Assisted Postsynthesis of Mn-Doped Cesium Lead Halide Perovskites with Improved Color-Tunable Luminescence and Stability. NANOMATERIALS 2022; 12:nano12152535. [PMID: 35893503 PMCID: PMC9351682 DOI: 10.3390/nano12152535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 11/22/2022]
Abstract
The metal doping at the Pb2+ position provides improved luminescence performance for the cesium lead halide perovskites, and their fabrication methods assisted by microwave have attracted considerable attention due to the advantages of fast heating and low energy consumption. However, the postsynthetic doping strategy of the metal-doped perovskites driven by microwave heating still lacks systematic research. In this study, the assembly of CsPbBr3/CsPb2Br5 with a strong fluorescence peak at 523 nm is used as the CsPbBr3 precursor, and through the optimization of the postsynthetic conditions such as reaction temperatures, Mn2+/Pb2+ feeding ratios, and Mn2+ sources, the optimum Mn2+-doped product (CsPb(Cl/Br)3:Mn) is achieved. The exciton fluorescence peak of CsPb(Cl/Br)3:Mn is blueshifted to 437 nm, and an obvious fluorescence peak attributing to the doped Mn2+ ions at 597 nm is obtained. Both the CsPbBr3 precursor and CsPb(Cl/Br)3:Mn have high PLQY and stability because there are CsPb2Br5 microcubic crystals to well disperse and embed the CsPbBr3 nanocrystals (NCs) in the precursor, and after Mn2+-doping, this structure is maintained to form CsPb(Cl/Br)3:Mn NCs on the surface of their microcrystals. The exploration of preparation parameters in the microwave-assisted method provides insights into the enhanced color-tunable luminescence of the metal-doped perovskite materials.
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Affiliation(s)
- Yaheng Zhang
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Chao Fan
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Jianghong Tang
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Gaoming Huang
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Xinfa Qiang
- Jiangsu Key Laboratory of Advanced Structural Materials and Application Technology, Nanjing Institute of Technology, Nanjing 211167, China;
| | - Yu Fu
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Wenjuan Zhou
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Juan Wu
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
| | - Shouqiang Huang
- Jiangsu Key Laboratory of E-Waste Recycling, School of Chemistry and Environmental Engineering, Jiangsu University of Technology, Changzhou 213001, China; (Y.Z.); (C.F.); (J.T.); (G.H.); (Y.F.); (W.Z.); (J.W.)
- Correspondence:
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46
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Marjit K, Ghosh G, Biswas RK, Ghosh S, Pati SK, Patra A. Modulating the Carrier Relaxation Dynamics in Heterovalently (Bi 3+) Doped CsPbBr 3 Nanocrystals. J Phys Chem Lett 2022; 13:5431-5440. [PMID: 35679509 DOI: 10.1021/acs.jpclett.2c01270] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Manipulation of intrinsic carrier relaxation is crucial for designing efficient lead halide perovskite nanocrystal (NC) based optoelectronic devices. The influence of heterovalent Bi3+ doping on the ultrafast carrier dynamics and hot carrier (HC) cooling relaxation of CsPbBr3 NCs has been studied using femtosecond transient absorption spectroscopy and first-principles calculations. The initial HC temperature and LO phonon decay time point to a faster HC relaxation rate in the Bi3+-doped CsPbBr3 NCs. The first-principles calculations disclose the acceleration of carrier relaxation in Bi3+-doped CsPbBr3 NCs due to the appearance of localized bands (antitrap states) within the conduction band. The higher Born effective charges (Z*) and higher soft energetic optical phonon density of states cause higher electron-phonon scattering rates in the Bi-doped CsPbBr3 system, which is responsible for the faster HC cooling rate in doped systems.
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Affiliation(s)
- Kritiman Marjit
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Goutam Ghosh
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Raju K Biswas
- Theoretical Sciences Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore 560064, India
| | - Srijon Ghosh
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
| | - Swapan K Pati
- Theoretical Sciences Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Bangalore 560064, India
| | - Amitava Patra
- School of Materials Sciences, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700032, India
- Institute of Nano Science and Technology, Knowledge City, Sector 81, Mohali 140306, India
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Wu X, Guo Z, Zhu S, Zhang B, Guo S, Dong X, Mei L, Liu R, Su C, Gu Z. Ultrathin, Transparent, and High Density Perovskite Scintillator Film for High Resolution X-Ray Microscopic Imaging. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2200831. [PMID: 35478488 PMCID: PMC9189653 DOI: 10.1002/advs.202200831] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/27/2022] [Indexed: 06/02/2023]
Abstract
Inorganic perovskite quantum dots CsPbX3 (X = Cl, Br, and I) has recently received extensive attention as a new promising class of X-ray scintillators. However, relatively low light yield (LY) of CsPbX3 and strong optical scattering of the thick opaque scintillator film restrict their practical applications for high-resolution X-ray microscopic imaging. Here, the Ce3+ ion doped CsPbBr3 nanocrystals (NCs) with enhanced LY and stability are obtained and then the ultrathin (30 µm) and transparent scintillator films with high density are prepared by a suction filtration method. The small amount Ce3+ dopant greatly enhances the LY of CsPbBr3 NCs (about 33 000 photons per MeV), which is much higher than that of bare CsPbBr3 NCs. Moreover, the scintillator films made by these NCs with high density realize a high spatial resolution of 862 nm thanks to its thin and transparent feature, which is so far a record resolution for perovskite scintillator-based X-ray microscopic imaging. This strategy not only provides a simple way to increase the resolution down to nanoscale but also extends the application of as-prepared CsPbBr3 scintillator for high resolution X-ray microscopic imaging.
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Affiliation(s)
- Xiaochen Wu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceInstitute of High Energy Physics and National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing100049China
- College of Mechanical and Electronic EngineeringShandong University of Science and TechnologyQingdao266590China
| | - Zhao Guo
- Fujian Key Laboratory of Translational Research in Cancer and Neurodegenerative DiseasesInstitute for Translational MedicineThe School of Basic Medical SciencesFujian Medical UniversityFuzhou350122China
| | - Shuang Zhu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceInstitute of High Energy Physics and National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing100049China
- Center of Materials Science and Optoelectronics EngineeringCollege of Materials Science and Optoelectronic TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Bingbing Zhang
- Beijing Synchrotron Radiation FacilityInstitute of High Energy PhysicsChinese Academy of SciencesBeijing100049China
| | - Sumin Guo
- College of Mechanical and Electronic EngineeringShandong University of Science and TechnologyQingdao266590China
| | - Xinghua Dong
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceInstitute of High Energy Physics and National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing100049China
| | - Linqiang Mei
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceInstitute of High Energy Physics and National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing100049China
- Center of Materials Science and Optoelectronics EngineeringCollege of Materials Science and Optoelectronic TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Ruixue Liu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceInstitute of High Energy Physics and National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing100049China
| | - Chunjian Su
- College of Mechanical and Electronic EngineeringShandong University of Science and TechnologyQingdao266590China
| | - Zhanjun Gu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in NanoscienceInstitute of High Energy Physics and National Center for Nanoscience and TechnologyChinese Academy of SciencesBeijing100049China
- Center of Materials Science and Optoelectronics EngineeringCollege of Materials Science and Optoelectronic TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
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48
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Duong TM, Aldakov D, Pouget S, Ling WL, Dang LS, Nogues G, Reiss P. Room-Temperature Doping of CsPbBr 3 Nanocrystals with Aluminum. J Phys Chem Lett 2022; 13:4495-4500. [PMID: 35575469 DOI: 10.1021/acs.jpclett.2c01021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
B-site doping is an emerging strategy for tuning the emission wavelength of cesium lead halide ABX3 nanocrystals. We present a simple method for the postsynthetic doping of CsPbBr3 nanocrystals with aluminum at room temperature by exposing them to a solution of AlBr3 in dibromomethane. Despite the much smaller ionic radius of Al3+ compared to that of Pb2+, nominal doping levels in a range from 8.1% to 24.3% were obtained when increasing the Al/Pb feed ratio from 1 to 4.5. Al3+ introduction leads to a hypsochromic shift of the photoluminescence (PL) emission of the CsPbBr3 nanocrystals. The PL peak position is highly stable over at least 6 months and tunable in a range of 510 to 480 nm by increasing the doping level. Structural analyses revealed a linear correlation between the PL energy and the lattice parameter with a slope of -1.96 eV/Å.
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Affiliation(s)
- Tuan M Duong
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, STEP, 38000 Grenoble, France
| | - Dmitry Aldakov
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, STEP, 38000 Grenoble, France
| | - Stéphanie Pouget
- Univ. Grenoble Alpes, CEA, IRIG, MEM, SGX, 38000 Grenoble, France
| | - Wai Li Ling
- Univ. Grenoble Alpes, CEA, CNRS, IBS, 38000 Grenoble, France
| | - Le Si Dang
- Univ. Grenoble Alpes, CNRS, Institut Néel, 38000 Grenoble, France
| | - Gilles Nogues
- Univ. Grenoble Alpes, CNRS, Institut Néel, 38000 Grenoble, France
| | - Peter Reiss
- Univ. Grenoble Alpes, CEA, CNRS, IRIG, SyMMES, STEP, 38000 Grenoble, France
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Fakharuddin A, Gangishetty MK, Abdi-Jalebi M, Chin SH, bin Mohd Yusoff AR, Congreve DN, Tress W, Deschler F, Vasilopoulou M, Bolink HJ. Perovskite light-emitting diodes. NATURE ELECTRONICS 2022; 5:203-216. [DOI: 10.1038/s41928-022-00745-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 03/02/2022] [Indexed: 09/02/2023]
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50
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Zhang J, Zhang L, Zhang Q. Unraveling the Effect of Surface Ligands on the Auger Process in an Inorganic Perovskite Quantum-Dot System. J Phys Chem Lett 2022; 13:2943-2949. [PMID: 35343682 DOI: 10.1021/acs.jpclett.2c00357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
This work systematically scrutinizes the role of surface-ligand modification in affecting the Auger process in a porotype perovskite system of CsPbBr3-octanoic acid (OcA) and CsPbBr3-oleic acid (OA) quantum dots (QDs), by means of steady-state/time-resolved/temperature-dependent photoluminescence spectroscopy and ultrafast transient absorption spectroscopy. The difference in the ligand chain length (i.e., C8 and C18 alkyl chains for OcA and OA, respectively) is found to significantly affect Auger recombination and hot-carrier cooling processes. More importantly, we provide fresh insight into the involved carrier dynamics; i.e., the modification of CsPbBr3 QDs with short-chain (long-chain) ligand leads to the formation of trapped (free) carriers, which causes a pronounced difference in the ability to suppress the detrimental Auger process. In addition, a careful analysis of spectral evolution reveals that the Auger suppression is related to the carrier population of a certain transition state. The valuable mechanistic information gleaned from the exciton/carrier dynamics perspective would assist in surface engineering through a facile ligand-modification strategy toward rational design and optimization of QD-based photoelectrochemical applications.
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Affiliation(s)
- Jiachen Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Lei Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qun Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Department of Chemical Physics, and Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
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