1
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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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2
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Abiedh K, Salerno M, Hassen F, Zaaboub Z. Single CsPbBr 3 Perovskite Microcrystals: From Microcubes to Microrods with Improved Crystallinity and Green Emission. MATERIALS (BASEL, SWITZERLAND) 2024; 17:4043. [PMID: 39203221 PMCID: PMC11356739 DOI: 10.3390/ma17164043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2024] [Revised: 08/10/2024] [Accepted: 08/12/2024] [Indexed: 09/03/2024]
Abstract
All-inorganic perovskite materials are promising in optoelectronics, but their morphology is a key parameter for achieving high device efficiency. We prepared CsPbBr3 perovskite microcrystals with different shapes grown directly on planar substrate by conventional drop casting. We observed the formation of CsPbBr3 microcubes on bare indium tin oxide (ITO)-coated glass. Interestingly, with the same technique, CsPbBr3 microrods were obtained on (3-Aminopropyl) triethoxysilane (APTES)-modified ITO-glass, which we ascribe to the modification of formation kinetics. The obtained microcrystals exhibit an orthorhombic structure. A green photoluminescence (PL) emission is revealed from the CsPbBr3 microrods. Contact angle measurements, Fourier-transform infrared and PL spectroscopies confirmed that APTES linked successfully to the ITO-glass substrate. We propose a qualitative mechanism to explain the anisotropic growth. The microrods exhibited improved PL and a slower PL lifetime compared to the microcubes, likely due to the diminished occurrence of defects. This work demonstrates the importance of the substrate surface to control the growth of perovskite single crystals and to boost the radiative recombination in view of high-performance optoelectronic devices.
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Affiliation(s)
- Khouloud Abiedh
- Micro-Optoelectronics and Nanostructures Laboratory (LR99/ES29), Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia; (K.A.); (F.H.); (Z.Z.)
| | - Marco Salerno
- Department of Physics, Institute for Globally Distributed Open Research and Education (IGDORE), University of Genoa, Via Dodecaneso 33, 16146 Genoa, Italy
| | - Fredj Hassen
- Micro-Optoelectronics and Nanostructures Laboratory (LR99/ES29), Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia; (K.A.); (F.H.); (Z.Z.)
| | - Zouhour Zaaboub
- Micro-Optoelectronics and Nanostructures Laboratory (LR99/ES29), Faculty of Sciences, University of Monastir, Monastir 5000, Tunisia; (K.A.); (F.H.); (Z.Z.)
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3
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Zhang DM, Zu KL, Yu MB, Chen N, Hu JT, Dong QL, Shi CS, Wang DK, Ding HY, Leng M, Zhao YB, Lu ZH. Deep Blue CsPbBr 3 Quantum Wires with Tailored Shapes. J Phys Chem Lett 2024:7892-7900. [PMID: 39058960 DOI: 10.1021/acs.jpclett.4c02009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2024]
Abstract
Low-dimension metal halide perovskites are attractive for bandgap tunable optoelectronic materials. Among them, 1-D CsPbBr3 quantum wires (QWs) are emerging as promising deep-blue luminescent material. However, the growth dynamics of 1-D perovskite QWs are intricate, making the study and control of 1-D QWs highly challenging. In this study, a strategy for controlling both the length and width of the CsPbBr3 QWs was realized. The temperature-dependent isotropic growth mechanism was revealed and employed as the main tool for the oriented growth of 1-D CsPbBr3 QWs for various aspect ratios. Our results pave the way for the controlled synthesis of ultrasmall perovskite nanocrystals.
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Affiliation(s)
- Dong-Ming Zhang
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Ke-Lei Zu
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Mu-Bing Yu
- National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150080, China
- Zhengzhou Research Institute, Harbin Institute of Technology, Zhengzhou 450046, China
| | - Nan Chen
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Jun-Tao Hu
- Department of Physics, Mathematics and Computer Science, Faculty of Basic Medical Science, Kunming Medical University, Kunming 650500, China
| | - Qi-Long Dong
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Chang-Sheng Shi
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Deng-Ke Wang
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Huai-Yi Ding
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Mei Leng
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Yong-Biao Zhao
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
| | - Zheng-Hong Lu
- Department of Physics, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Key Laboratory of Yunnan Provincial Higher Education Institutions for Optoelectronics Device Engineering, School of Physics and Astronomy, Yunnan University, Kunming 650500, China
- Department of Materials Science and Engineering, University of Toronto, Toronto, Ontario M5S 3E4, Canada
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4
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Bera S, Tripathi A, Titus T, Sethi NM, Das R, Afreen, Adarsh KV, Thomas KG, Pradhan N. CsPbBr 3 Perovskite Crack Platelet Nanocrystals and Their Biexciton Generation. J Am Chem Soc 2024; 146:20300-20311. [PMID: 39005055 DOI: 10.1021/jacs.4c05803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/16/2024]
Abstract
Lead halide perovskite nanocrystals have been extensively studied in recent years as efficient optical materials for their bright and color-tunable emissions. However, these are mostly confined to their 3D nanocrystals and limited to the anisotropic nanostructures. By exploring the Cs-sublattice-induced metal(II) ion exchange with Pb(II), crack CsPbBr3 perovskite platelet nanocrystals having polar surfaces in all three directions are reported here, which remained different than reported standard square platelets. The crack platelets are also passivated with halides to enhance their brightness. Further, as these crack and passivated crack platelets have defects and polar surfaces, the exciton and biexciton generation in these platelets is investigated using femtosecond photoluminescence and transient absorption measurement at ambient as well as cryogenic temperatures, correlated with time-resolved single-particle photoluminescence spectroscopy, and compared with standard square platelets having nonpolar facets. These investigations revealed that the crack platelets and passivated crack platelets possess enhanced biexciton emission compared to square platelets due to the presence of polar surfaces in all three directions. These results provide insights into not only the design of the anisotropic nanostructures of ionic nanocrystals but also the possibility of tuning the single exciton to biexciton generation efficiency, which has potential applications in optoelectronic systems.
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Affiliation(s)
- Suman Bera
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Akash Tripathi
- Department of Physics, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh 462066, India
| | - Timi Titus
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala 695551, India
| | - Nilesh Monohar Sethi
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Rajdeep Das
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Afreen
- Department of Physics, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh 462066, India
| | - K V Adarsh
- Department of Physics, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh 462066, India
| | - K George Thomas
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram, Kerala 695551, India
| | - Narayan Pradhan
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
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5
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Kimberly TQ, Frasch MH, Kauzlarich SM. Colloidal synthesis of two-dimensional nanocrystals by the polyol route. Dalton Trans 2024. [PMID: 39046257 DOI: 10.1039/d4dt01322k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
The field of 2D nanomaterials is ever-growing with a myriad of synthetic advancements that have been used to obtain such materials. There are top-down, as well as bottom-up, fabrication methods for obtaining 2D nanomaterials; however, synthesis of 2D nanomaterials from solution offers a simple scalable way to control size, shape, and surface. This review outlines the recent advances in colloidal polyol synthesis of 2D nanomaterials and provides perspectives on the similarities and differences in various syntheses. Various materials classes are presented and discussed, including metals, oxides, chalcogenides, and halides, that can be synthesized as 2D nanomaterials via a polyol process. Throughout the literature, polyol media is demonstrated to be versatile not only as a solvent and reducing agent for metal precursors but also as a binding and shape-directing agent for many 2D nanomaterials. Polyols also offer the ability to dissolve various surfactants and additives that can further control the morphology and composition of various nanomaterials. In this review, we outline the various 2D materials that have been realized via the solution polyol route.
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Affiliation(s)
- Tanner Q Kimberly
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
| | - Michelle H Frasch
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
| | - Susan M Kauzlarich
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA.
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6
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Agarwal N, Agarwal D, Debnath T. Amino Acid-Driven Dimensional Reduction of CsPbBr 3 Nanocrystals. ACS OMEGA 2024; 9:31026-31034. [PMID: 39035888 PMCID: PMC11256307 DOI: 10.1021/acsomega.4c04364] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 06/05/2024] [Accepted: 06/17/2024] [Indexed: 07/23/2024]
Abstract
Inspired by biomineralization, the recent incorporation of organic molecules into inorganic lattices shows interesting optical properties and tunability. We functionalize all inorganic CsPbBr3 perovskite nanocrystals (PNCs) with amino acid (AA) cysteine using the water-hexane interfacial approach. Along with the AA cysteine, we added AuBr3 salt into the aqueous phase, leading to the formation of a Au-cysteine thiolate complex to activate the aqueous to nonaqueous phase transportation of the AA via a molecular shuttle, oleylamine. The interaction between CsPbBr3 PNCs and the Au-cysteine thiolate complex is probed using optical spectroscopy, which reveals dimensional reduction of the parent PNCs to form CsPbBr3 nanoplatelets (NPls) and subsequent phase transformation to CsPb2Br5 NPls. X-ray diffraction, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscopy conclusively support the above chemical transformation reaction via interfacial chemistry. We propose a mechanistic insight into the dimensional growth in one direction in the presence of AAs via preferential ligand binding to specific facets, leading to transformation from 3D cubes to 2D NPls, while, presumably, the phase transformation occurs via the CsBr stripping mechanism upon prolonged interaction with water. Since AAs are building blocks for several redox-active complex biological moieties, including proteins, investigation of the interaction of AAs with PNCs may be advantageous since the latter can act as a fluorescent probe for bioimaging application.
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Affiliation(s)
- Nikunj Agarwal
- Centre
for Nanotechnology, Indian Institute of
Technology Guwahati, Guwahati 781039, Assam, India
| | - Deepshikha Agarwal
- Centre
for Nanotechnology, Indian Institute of
Technology Guwahati, Guwahati 781039, Assam, India
| | - Tushar Debnath
- Centre
for Nanotechnology, Indian Institute of
Technology Guwahati, Guwahati 781039, Assam, India
- Nano
Physical Spectroscopy Group, Department of Chemistry, School of Natural
Sciences, Shiv Nadar Institution of Eminence, Delhi NCR 201314, Uttar Pradesh, India
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7
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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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8
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Kong L, Sun Y, Zhao B, Ji K, Feng J, Dong J, Wang Y, Liu Z, Maqbool S, Li Y, Yang Y, Dai L, Lee W, Cho C, Stranks SD, Friend RH, Wang N, Greenham NC, Yang X. Fabrication of red-emitting perovskite LEDs by stabilizing their octahedral structure. Nature 2024; 631:73-79. [PMID: 38867044 DOI: 10.1038/s41586-024-07531-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 05/07/2024] [Indexed: 06/14/2024]
Abstract
Light-emitting diodes (LEDs) based on metal halide perovskites (PeLEDs) with high colour quality and facile solution processing are promising candidates for full-colour and high-definition displays1-4. Despite the great success achieved in green PeLEDs with lead bromide perovskites5, it is still challenging to realize pure-red (620-650 nm) LEDs using iodine-based counterparts, as they are constrained by the low intrinsic bandgap6. Here we report efficient and colour-stable PeLEDs across the entire pure-red region, with a peak external quantum efficiency reaching 28.7% at 638 nm, enabled by incorporating a double-end anchored ligand molecule into pure-iodine perovskites. We demonstrate that a key function of the organic intercalating cation is to stabilize the lead iodine octahedron through coordination with exposed lead ions and enhanced hydrogen bonding with iodine. The molecule synergistically facilitates spectral modulation, promotes charge transfer between perovskite quantum wells and reduces iodine migration under electrical bias. We realize continuously tunable emission wavelengths for iodine-based perovskite films with suppressed energy loss due to the decrease in bond energy of lead iodine in ionic perovskites as the bandgap increases. Importantly, the resultant devices show outstanding spectral stability and a half-lifetime of more than 7,600 min at an initial luminance of 100 cd m-2.
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Affiliation(s)
- Lingmei Kong
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China
| | - Yuqi Sun
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Bin Zhao
- College of Physics, Jilin University, Changchun, China
| | - Kangyu Ji
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Jie Feng
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China
| | - Jianchao Dong
- College of Physics, Jilin University, Changchun, China
| | - Yuanzhi Wang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China
| | - Zirui Liu
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China
| | - Shabnum Maqbool
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Yunguo Li
- CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China
| | - Yingguo Yang
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Lab, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, China
- School of Microelectronics, Fudan University, Shanghai, China
| | - Linjie Dai
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Wanhee Lee
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
| | - Changsoon Cho
- Department of Material Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Republic of Korea
- Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Seoul, Republic of Korea
| | - Samuel D Stranks
- Cavendish Laboratory, University of Cambridge, Cambridge, UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | | | - Ning Wang
- College of Physics, Jilin University, Changchun, China.
| | - Neil C Greenham
- Cavendish Laboratory, University of Cambridge, Cambridge, UK.
| | - Xuyong Yang
- Key Laboratory of Advanced Display and System Applications of Ministry of Education, Shanghai University, Shanghai, China.
- Shanghai Engineering Research Center for Integrated Circuits and Advanced Display Materials, Shanghai, China.
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9
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Inico E, Saetta C, Di Liberto G. Impact of quantum size effects to the band gap of catalytic materials: a computational perspective. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:361501. [PMID: 38830369 DOI: 10.1088/1361-648x/ad53b5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2024] [Accepted: 06/03/2024] [Indexed: 06/05/2024]
Abstract
The evolution of nanotechnology has facilitated the development of catalytic materials with controllable composition and size, reaching the sub-nanometer limit. Nowadays, a viable strategy for tailoring and optimizing the catalytic activity involves controlling the size of the catalyst. This strategy is underpinned by the fact that the properties and reactivity of objects with dimensions on the order of nanometers can differ from those of the corresponding bulk material, due to the emergence of quantum size effects. Quantum size effects have a deep influence on the band gap of semiconducting catalytic materials. Computational studies are valuable for predicting and estimating the impact of quantum size effects. This perspective emphasizes the crucial role of modeling quantum size effects when simulating nanostructured catalytic materials. It provides a comprehensive overview of the fundamental principles governing the physics of quantum confinement in various experimentally observable nanostructures. Furthermore, this work may serve as a tutorial for modeling the electronic gap of simple nanostructures, highlighting that when working at the nanoscale, the finite dimensions of the material lead to an increase of the band gap because of the emergence of quantum confinement. This aspect is sometimes overlooked in computational chemistry studies focused on surfaces and nanostructures.
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Affiliation(s)
- Elisabetta Inico
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano Bicocca, Via R. Cozzi 55, 20125 Milano, Italy
| | - Clara Saetta
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano Bicocca, Via R. Cozzi 55, 20125 Milano, Italy
| | - Giovanni Di Liberto
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano Bicocca, Via R. Cozzi 55, 20125 Milano, Italy
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10
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Majumdar A, Chowdhury S, Ahuja R. Purely ionically bonded cation paving the way to ultralow thermal conductivity and large thermoelectric figure of merit in Ruddlesden-Popper perovskite Cs 2SnI 2Br 2. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:345901. [PMID: 38740041 DOI: 10.1088/1361-648x/ad4aac] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/13/2024] [Indexed: 05/16/2024]
Abstract
Lower dimensional materials have gained quite a bit of popularity in the last few decades. Perovskite materials have been studied extensively for their photovoltaic properties. But for large scale application of photovoltaic materials, the thermal properties need to be studied. In this work, using first principles calculations, we have studied the thermal conductivity and thermoelectric performance of quasi two-dimensional (2D) Ruddlesden-Popper phase of perovskite, Cs2SnI2Br2. The Cs atoms are found to be ionically bonded to the halogens leading to low elastic constants and hence give rise to weak bonding. The large anharmonicity in this material causes the lattice thermal conductivity to be ultralow having a value of 0.30 W·m-1·K-1at 300 K and therefore the thermoelectric figure of merit has been found to be high with a maximum value of 2.08 at 600 K. This lead-free 2D perovskite can be the precursor to a wide variety of similar materials with ultralow thermal conductivity.
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Affiliation(s)
- Arnab Majumdar
- Chemistry & Bioinformatics Department, Terramera Inc., Vancouver, BC V5Y 1K3, Canada
| | - Suman Chowdhury
- Department of Physics and Astrophysics, University of Delhi, Delhi 110007, India
| | - Rajeev Ahuja
- Condensed Matter Theory Group, Department of Physics and Astronomy, Box 516, Uppsala University, Uppsala SE-75120, Sweden
- Department of Physics, Indian Institute of Technology Ropar, Rupnagar 140001, Punjab, India
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11
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Liu Q, Li H, Wang X, He J, Luo X, Wang M, Liu J, Liu Y. Synthesis and Properties of Size-Adjustable CsPbBr 3 Nanosheets for Potential Photocatalysis. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2563. [PMID: 38893827 PMCID: PMC11173759 DOI: 10.3390/ma17112563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/08/2024] [Accepted: 05/13/2024] [Indexed: 06/21/2024]
Abstract
Amidst the rapid advancements in the fields of photovoltaics and optoelectronic devices, CsPbBr3 nanosheets (NSs) have emerged as a focal point of research due to their exceptional optical and electronic properties. This work explores the application potential of CsPbBr3 NSs in photonic and catalytic domains. Utilizing an optimized hot-injection method and a ZnBr2-assisted in situ passivation strategy, we successfully synthesized CsPbBr3 NSs with controlled dimensions and optical characteristics. Comprehensive characterization revealed that the nucleation environment and thickness significantly influenced the structure and optical performance of the materials. The results indicate that the optimized synthesis method enables control over the lateral dimensions of the nanoparticles, ranging from 9.1 ± 0.06 nm to 334.5 ± 4.40 nm, facilitating the tuning of the excitation wavelength from 460 nm (blue) to 510 nm (green). Further analyses involving photoresponse and electrochemical impedance spectroscopy demonstrated the substantial potential of these NSs in applications such as photocatalysis and energy conversion.
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Affiliation(s)
| | | | | | | | | | | | | | - Yong Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, International School of Materials Science and Engineering (ISMSE), Wuhan University of Technology, Wuhan 430070, China; (Q.L.); (H.L.); (X.W.); (J.H.); (X.L.); (M.W.); (J.L.)
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12
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Liu J, Lu R, Yu A. Origin of the low-energy tail in the photoluminescence spectrum of CsPbBr 3 nanoplatelets: a femtosecond transient absorption spectroscopic study. Phys Chem Chem Phys 2024; 26:12179-12187. [PMID: 38591257 DOI: 10.1039/d4cp00786g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/10/2024]
Abstract
CsPbBr3 nanoplatelets (NPLs), as some of the two-dimensional lead halide perovskites, have been intensively investigated due to their outstanding photophysical and photoelectric properties. However, there remain unclear fundamental issues on their carrier kinetics and the low-energy tail in their photoluminescence (PL) spectrum. In this paper, we synthesized CsPbBr3 NPLs with five [PbBr6]4- monolayers and performed comprehensive studies by using steady-state absorption, PL, and femtosecond transient absorption (fs-TA) spectroscopic measurements. We determined both the biexciton Auger recombination time (7 ± 2 ps) and trapped exciton lifetime (110 ± 15 ps) of the five monolayer CsPbBr3 NPLs. We also investigated the origin of the low-energy tail emission in their PL spectrum. More importantly, we found that a negative ΔA feature in the energy range of 2.45-2.55 eV appears in their fs-TA spectrum at 2, 4 and 10 ps delay times, which could help them act as a laser gain medium. The low-energy tail emission in their PL spectrum overlaps well with the negative ΔA feature in the energy range of 2.45-2.55 eV in their fs-TA spectrum at 2, 4 and 10 ps delay times.
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Affiliation(s)
- Jinwei Liu
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China.
| | - Rong Lu
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China.
| | - Anchi Yu
- Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China.
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13
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von Schwerin P, Döblinger M, Debnath T, Feldmann J, Akkerman QA. Size-Tunable Manganese-Doped Spheroidal CsPbCl 3 Quantum Dots. J Phys Chem Lett 2024; 15:3728-3732. [PMID: 38546986 DOI: 10.1021/acs.jpclett.4c00049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
Manganese doping has been demonstrated as a versatile tool to tune the emission of CsPbCl3 nanocrystals (NCs). Although this has been demonstrated in nanocubes and nanoplatelets, strategies for doping Mn2+ in size-tunable, excitonic CsPbCl3 quantum dots (QDs) remain absent. In this work, we demonstrate the synthesis of size-tunable spheroidal CsPbCl3:Mn2+ QDs, which can be obtained by a water-hexane interfacial combined anion and cation exchange strategy starting from CsPbBr3 QDs. Interestingly, the QDs exhibit a fast 0.2 ms Mn2+ photoluminescence (PL) lifetime and an energy transfer (ET) time of approximately 100 ps from the excitonic state of the QD to the atomic state of the Mn2+ ion. The size dependence observation of the manganese PL efficiency and the slow ET rate suggest that Mn2+ mainly gets incorporated at the QD's surface, highlighting the importance of strategies chosen for the incorporation of Mn2+ into perovskite QDs.
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Affiliation(s)
- Patrick von Schwerin
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
| | - Markus Döblinger
- Department of Chemistry, Ludwig-Maximilians-Universität München, Butenandtstr. 5-13 (E), 81377 Munich, Germany
| | - Tushar Debnath
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
- Nano Physical Spectroscopy Group, Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence, Delhi NCR, Uttar Pradesh 201314, India
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
| | - Quinten A Akkerman
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstr. 10, 80539 Munich, Germany
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14
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Ravi VK, Li Z, Paul SJ, Sahu A. The more the merrier: optimizing monomer concentration for supersaturation controlled synthesis of stable ultra-small CsPbBr 3 nanocrystals for blue emission. Chem Commun (Camb) 2024; 60:3307-3310. [PMID: 38426708 DOI: 10.1039/d4cc00163j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
Synthesis of strongly quantum confined and emissive CsPbBr3 perovskite nanocrystals with sizes <4 nm has proven challenging owing to fast nucleation and rapid growth. In this work, ultra-small blue-emitting (∼461 nm) CsPbBr3 nanocrystals with an average particle size of 3.2 nm are synthesized via a high-temperature (170 °C) colloidal approach by controlling the supersaturation reaction conditions. Our approach yielded stable nanocrystals with uniform size, shape, and excellent color purity, making them promising for blue light emitting diode (LED) applications.
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Affiliation(s)
- Vikash Kumar Ravi
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, 11201, New York, USA.
| | - Zheng Li
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, 11201, New York, USA.
| | - Shlok Joseph Paul
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, 11201, New York, USA.
| | - Ayaskanta Sahu
- Department of Chemical and Biomolecular Engineering, New York University, Brooklyn, 11201, New York, USA.
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15
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Qin C, Wang X, Zhou Z, Song J, Jia G, Ma S, Zhang J, Jiao Z, Zheng S. Ultrafast energy transfer dynamics in CsPbBr 3 nanoplatelets-BODIPY heterostructure. OPTICS EXPRESS 2024; 32:9306-9315. [PMID: 38571168 DOI: 10.1364/oe.516679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 02/12/2024] [Indexed: 04/05/2024]
Abstract
Understanding and directing the energy transfer in nanocrystals-chromophore heterostructure is critical to improve the efficiency of their photocatalytic and optoelectronic applications. In this work, we studied the energy transfer process between inorganic-organic molecular complexes composed of cesium halide perovskite nanoplatelets (CsPbBr3 NPLs) and boron dipyrromethene (BODIPY) by photoluminescence spectroscopy (PL), time-correlated single photon-counting (TCSPC) and femtosecond transient absorption spectroscopy. The quenching of PL in CsPbBr3 NPLs occurred simultaneously with the PL enhancement of BODIPY implied the singlet energy transfer process. The rate of energy transfer has been determined by transient absorption spectrum as kET = 3.8 × 109 s-1. The efficiency of Förster energy transfer (FRET) has been quantitatively calculated up to 70%. Our work advances the understanding of the interaction between BODIPY and perovskite nanoplatelets, providing a new solution based on their optoelectronic and photocatalytic applications.
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16
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Li Y, Cui Z, Shi L, Shan J, Zhang W, Wang Y, Ji Y, Zhang D, Wang J. Perovskite Nanocrystals: Superior Luminogens for Food Quality Detection Analysis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:4493-4517. [PMID: 38382051 DOI: 10.1021/acs.jafc.3c06660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2024]
Abstract
With the global limited food resources receiving grievous damage from frequent climate changes and ascending global food demand resulting from increasing population growth, perovskite nanocrystals with distinctive photoelectric properties have emerged as attractive and prospective luminogens for the exploitation of rapid, easy operation, low cost, highly accurate, excellently sensitive, and good selective biosensors to detect foodborne hazards in food practices. Perovskite nanocrystals have demonstrated supreme advantages in luminescent biosensing for food products due to their high photoluminescence (PL) quantum yield, narrow full width at half-maximum PL, tunable PL in the entire visible spectrum, easy preparation, and various modification strategies compared with conventional semiconductors. Herein, we have carried out a comprehensive discussion concerning perovskite nanocrystals as luminogens in the application of high-performance biosensing of foodborne hazards for food products, including a brief introduction of perovskite nanocrystals, perovskite nanocrystal-based biosensors, and their application in different categories of food products. Finally, the challenges and opportunities faced by perovskite nanocrystals as superior luminogens were proposed to promote their practicality in the future food supply.
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Affiliation(s)
- Yuechun Li
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Zhaowen Cui
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Longhua Shi
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Jinrui Shan
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Wentao Zhang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Yanru Wang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Yanwei Ji
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Daohong Zhang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
| | - Jianlong Wang
- College of Food Science and Engineering, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China
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17
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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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18
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Wang A, Liu J, Li J, Cheng S, Zhang Y, Wang Y, Xie Y, Yu C, Chu Y, Dong J, Cao J, Wang F, Huang W, Qin T. Dendrimer-Encapsulated Halide Perovskite Nanocrystals for Self-Powered White Light-Emitting Glass. J Am Chem Soc 2023; 145:28156-28165. [PMID: 38095593 DOI: 10.1021/jacs.3c10657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Perovskite nanocrystals (PNCs) have attracted substantial attention due to their inspiring intrinsic merits such as low cost, high performance, and solution processability, but when it comes to the usage of blends of different colored PNCs with the purpose of covering the broadband spectrum field, the high degree of instability remains a major bottleneck. Herein, we report a family of dendritic ammonium ligands that act as stiff shell-encapsulating PNCs for improving their stability and suppressing ion permeability in mixed colloidal PNC solutions. The as-synthesized ligand-encapsulated PNCs notably achieve near-unity photoluminescence quantum yields (PLQYs) and strongly resist the unwanted ion exchange reaction under aggressive anion source attack. To fabricate self-powered white-emitting glass, the stabilized mixed colored PNCs were embedded into the laminated glass, which simultaneously acted as absorbers-emitters for luminescent solar concentrators (LSCs) and emitters for white light-emitting glass.
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Affiliation(s)
- Aifei Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Jiaxin Liu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Junjie Li
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Suwen Cheng
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Yupeng Zhang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Yanchen Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Yuan Xie
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Chen Yu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Ying Chu
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Jingjin Dong
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Jiupeng Cao
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Fangfang Wang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
| | - Wei Huang
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
- School of Flexible Electronics (SoFE) & State Key Laboratory of Optoelectronic Materials and Technologies (OEMT), Sun Yat-sen University, Guangdong 510080, China
- Henan Institute of Flexible Electronics (HIFE), Zhengzhou, Henan 450046, China
| | - Tianshi Qin
- Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM) & School of Flexible Electronics (Future Technologies), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (Nanjing Tech), Nanjing, Jiangsu 211816, China
- School of Flexible Electronics (SoFE) & State Key Laboratory of Optoelectronic Materials and Technologies (OEMT), Sun Yat-sen University, Guangdong 510080, China
- Henan Institute of Flexible Electronics (HIFE), Zhengzhou, Henan 450046, China
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19
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Gao R, Kang J. Unusual Band Gap Bowing in CsCd xPb (1-x)Br 3 Alloys Due to a Chemical Mismatch. J Phys Chem Lett 2023; 14:10670-10676. [PMID: 38031666 DOI: 10.1021/acs.jpclett.3c02813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
In this work, the band structure of CsCdxPb1-xBr3 alloys is investigated through first-principles calculations. An unusual upward band gap bowing is revealed, which is consistent with the experimental observations of the blue-shifted gap in Cd doped CsPbBr3. The gap bowing is found to be mainly contributed to by the conduction band minimum. Based on symmetry analysis, it is demonstrated that, at the Pb-rich or Cd-rich regime, the hybridization between the Pb(6p)-driven and Cd(5s)-driven conduction bands is strongly suppressed due to their different symmetries. Such a chemical mismatch leads to an almost independent evolution of the Pb(6p) and Cd(5s) bands. Then, a model of band shrinking and broadening is proposed to explain upward gap bowing. The results highlight the critical role of symmetry in determining the electronic properties of alloys consisting of materials with distinct band edge characters.
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Affiliation(s)
- Rui Gao
- Beijing Computational Science Research Center, Beijing 100193, China
| | - Jun Kang
- Beijing Computational Science Research Center, Beijing 100193, China
- Department of Physics, Beijing Normal University, Beijing 100875, China
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20
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Doane T, Cruz KJ, Chiang TH, Maye MM. Using the Photoluminescence Color Change in Cesium Lead Iodide Nanoparticles to Monitor the Kinetics of an External Organohalide Chemical Reaction by Halide Exchange. ACS NANOSCIENCE AU 2023; 3:418-423. [PMID: 37868221 PMCID: PMC10588436 DOI: 10.1021/acsnanoscienceau.3c00026] [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: 06/20/2023] [Revised: 08/16/2023] [Accepted: 08/18/2023] [Indexed: 10/24/2023]
Abstract
In this work, we demonstrate a photoluminescence-based method to monitor the kinetics of an organohalide reaction by way of detecting released bromide ions at cesium lead halide nanoparticles. Small aliquots of the reaction are added to an assay with known concentrations of CsPbI3, and the resulting Br-to-I halide exchange (HE) results in rapid and sensitive wavelength blueshifts (Δλ) due to CsPbBrxI3-x intermediate concentrations, the wavelengths of which are proportional to concentrations. An assay response factor, C, relates Δλ to Br- concentration as a function of CsPbI3 concentration. The observed kinetics, as well as calculated rate constants, equilibrium, and activation energy of the solvolysis reaction tested correspond closely to synthetic literature values, validating the assay. Factors that influence the sensitivity and performance of the assay, such as CsPbI3 size, morphology, and concentration, are discussed.
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Affiliation(s)
| | - Kevin J. Cruz
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Tsung-Hsing Chiang
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
| | - Mathew M. Maye
- Department of Chemistry, Syracuse University, Syracuse, New York 13244, United States
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21
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Ghaithan HM, Qaid SMH, Alahmed ZA, Bawazir HS, Aldwayyan AS. Electronic Structure and Optical Properties of Inorganic Pm3m and Pnma CsPbX 3 (X = Cl, Br, I) Perovskite: A Theoretical Understanding from Density Functional Theory Calculations. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6232. [PMID: 37763509 PMCID: PMC10532767 DOI: 10.3390/ma16186232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 08/19/2023] [Accepted: 08/29/2023] [Indexed: 09/29/2023]
Abstract
In this study, we investigated the optoelectronic properties of cubic (Pm3m) and orthorhombic (Pnma) CsPbX3 (X = I, Br, and Cl). We utilized the full potential linear augmented plane wave method, which is implemented in the WIEN2k code, to facilitate the investigation. Different exchange potentials were used to analyze the optoelectronic behavior using the available density functional theory methods. Our findings revealed that CsPbX3 perovskites display direct band gaps at the R and Г points for cubic (Pm3m) and orthorhombic (Pnma) structures, respectively. Among the exchange potentials, the mBJ-GGA method provided the most accurate results. These outcomes concurred with the experimental results. In both Pm3m and Pnma structures, interesting changes were observed when iodide (I) was replaced with bromine (Br) and then chlorine (Cl). The direct band gap at the R and Г points shifted to higher energy levels. Similarly, when I was replaced with Br and Cl, there was a noticeable decrease in the absorption coefficient, dielectric constants, refractive index, and reflectivity, in addition to a band gap shift to higher energy levels.
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Affiliation(s)
- Hamid M. Ghaithan
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.M.H.Q.); (Z.A.A.); (H.S.B.)
| | - Saif M. H. Qaid
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.M.H.Q.); (Z.A.A.); (H.S.B.)
| | - Zeyad A. Alahmed
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.M.H.Q.); (Z.A.A.); (H.S.B.)
| | - Huda S. Bawazir
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.M.H.Q.); (Z.A.A.); (H.S.B.)
| | - Abdullah S. Aldwayyan
- Physics and Astronomy Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (S.M.H.Q.); (Z.A.A.); (H.S.B.)
- King Abdullah Institute for Nanotechnology, King Saud University, Riyadh 11451, Saudi Arabia
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22
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Zhu H, Kick M, Ginterseder M, Krajewska CJ, Šverko T, Li R, Lu Y, Shih MC, Van Voorhis T, Bawendi MG. Synthesis of Zwitterionic CsPbBr 3 Nanocrystals with Controlled Anisotropy using Surface-Selective Ligand Pairs. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304069. [PMID: 37485908 DOI: 10.1002/adma.202304069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/06/2023] [Indexed: 07/25/2023]
Abstract
Mechanistic studies of the morphology of lead halide perovskite nanocrystals (LHP-NCs) are hampered by a lack of generalizable suitable synthetic strategies and ligand systems. Here, the synthesis of zwitterionic CsPbBr3 NCs is presented with controlled anisotropy using a proposed "surface-selective ligand pairs" strategy. Such a strategy provides a platform to systematically study the binding affinity of capping ligand pairs and the resulting LHP morphologies. By using zwitterionic ligands (ZwL) with varying structures, majority ZwL-capped LHP NCs with controlled morphology are obtained, including anisotropic nanoplatelets and nanorods, for the first time. Combining experiments with density functional theory calculations, factors that govern the ligand binding on the different surface facets of LHP-NCs are revealed, including the steric bulkiness of the ligand, the number of binding sites, and the charge distance between binding moieties. This study provides guidance for the further exploration of anisotropic LHP-NCs.
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Affiliation(s)
- Hua Zhu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Matthias Kick
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Matthias Ginterseder
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Chantalle J Krajewska
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Tara Šverko
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Ruipeng Li
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Yongli Lu
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Meng-Chen Shih
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Troy Van Voorhis
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
| | - Moungi G Bawendi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, 02139, USA
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23
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Ghosh J, O’Neill J, Masteghin MG, Braddock I, Crean C, Dorey R, Salway H, Anaya M, Reiss J, Wolfe D, Sellin P. Surfactant-Dependent Bulk Scale Mechanochemical Synthesis of CsPbBr 3 Nanocrystals for Plastic Scintillator-Based X-ray Imaging. ACS APPLIED NANO MATERIALS 2023; 6:14980-14990. [PMID: 37649835 PMCID: PMC10463220 DOI: 10.1021/acsanm.3c02531] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 07/21/2023] [Indexed: 09/01/2023]
Abstract
We report a facile, solvent-free surfactant-dependent mechanochemical synthesis of highly luminescent CsPbBr3 nanocrystals (NCs) and study their scintillation properties. A small amount of surfactant oleylamine (OAM) plays an important role in the two-step ball milling method to control the size and emission properties of the NCs. The solid-state synthesized perovskite NCs exhibit a high photoluminescence quantum yield (PLQY) of up to 88% with excellent stability. CsPbBr3 NCs capped with different amounts of surfactant were dispersed in toluene and mixed with polymethyl methacrylate (PMMA) polymer and cast into scintillator discs. With increasing concentration of OAM during synthesis, the PL yield of CsPbBr3/PMMA nanocomposite was increased, which is attributed to reduced NC aggregation and PL quenching. We also varied the perovskite loading concentration in the nanocomposite and studied the resulting emission properties. The most intense PL emission was observed from the 2% perovskite-loaded disc, while the 10% loaded disc exhibited the highest radioluminescence (RL) emission from 50 kV X-rays. The strong RL yield may be attributed to the deep penetration of X-rays into the composite, combined with the large interaction cross-section of the X-rays with the high-Z atoms within the NCs. The nanocomposite disc shows an intense RL emission peak centered at 536 nm and a fast RL decay time of 29.4 ns. Further, we have demonstrated the X-ray imaging performance of a 10% CsPbBr3 NC-loaded nanocomposite disc.
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Affiliation(s)
- Joydip Ghosh
- Department
of Physics, University of Surrey, Guildford GU2 7XH, U.K.
| | - Joseph O’Neill
- Department
of Physics, University of Surrey, Guildford GU2 7XH, U.K.
| | - Mateus G. Masteghin
- Advanced
Technology Institute, University of Surrey, Guildford GU2 7XH, U.K.
| | - Isabel Braddock
- Department
of Physics, University of Surrey, Guildford GU2 7XH, U.K.
| | - Carol Crean
- Department
of Chemistry, University of Surrey, Guildford GU2 7XH, U.K.
| | - Robert Dorey
- School
of Mechanical Engineering Sciences, University
of Surrey, Guildford GU2 7XH, U.K.
| | - Hayden Salway
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
| | - Miguel Anaya
- Department
of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge CB3 0AS, U.K.
- Departamento
Física de la Materia Condensada, Instituto de Ciencia
de Materiales de Sevilla, Universidad de
Sevilla−CSIC, Avenida Reina Mercedes SN, Sevilla 41012, Spain
| | - Justin Reiss
- Applied
Research
Laboratory, Materials Science and Engineering Department, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Douglas Wolfe
- Applied
Research
Laboratory, Materials Science and Engineering Department, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Paul Sellin
- Department
of Physics, University of Surrey, Guildford GU2 7XH, U.K.
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24
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Yoo JH, Kim S, Lee H, Park C, Lee TW, Park JW. Room-Temperature, Homogeneous, Single-Step, and Large-Scale Synthesis of Perovskite Nanoplatelets for Blue Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:39461-39471. [PMID: 37555994 DOI: 10.1021/acsami.3c03139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/10/2023]
Abstract
Inorganic perovskite nanocrystals (IPNCs) have attracted considerable attention due to their excellent optoelectronic properties. However, problems arise from anion migration during the preparation of a blue light-emitting diode (LED), and only small-scale syntheses have been conducted on a laboratory scale. By using only Br as the anion here, CsPbBr3 was synthesized in the form of nanoplatelets to eliminate the effects of anion migration and to prepare an inorganic perovskite nanoplatelet (IPNPL) emitting blue light. In addition, the synthesis was performed under ambient conditions at room temperature, and the synthetic process was shortened to enable large-scale synthesis. We used a 1 L bottle for large-scale synthesis, and a photoluminescence quantum yield (PLQY) of 78% was observed at 460 nm. We fabricated LEDs by using IPNPLs, and we observed an electroluminescence peak at 461 nm. The developed synthetic method is expected to pave the way for commercialization of IPNCs and the next-generation display market.
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Affiliation(s)
- Ju-Hyun Yoo
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Sungjin Kim
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Hyeokjung Lee
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Cheolmin Park
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
| | - Tae-Woo Lee
- Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- School of Chemical and Biological Engineering, Institute of Engineering Research, Research Institute of Advanced Materials, Soft Foundry, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jin-Woo Park
- Department of Materials Science and Engineering, Yonsei University, Seoul 03722, Republic of Korea
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25
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Wei Z, Mulder JT, Dubey RK, Evers WH, Jager WF, Houtepen AJ, Grozema FC. Tuning the Driving Force for Charge Transfer in Perovskite-Chromophore Systems. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:15406-15415. [PMID: 37583440 PMCID: PMC10424230 DOI: 10.1021/acs.jpcc.3c03815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 07/14/2023] [Indexed: 08/17/2023]
Abstract
Understanding the interplay between the kinetics and energetics of photophysical processes in perovskite-chromophore hybrid systems is crucial for realizing their potential in optoelectronics, photocatalysis, and light-harvesting applications. By combining steady-state optical characterizations and transient absorption spectroscopy, we have investigated the mechanism of interfacial charge transfer (CT) between colloidal CsPbBr3 nanoplatelets (NPLs) and surface-anchored perylene derivatives and have explored the possibility of controlling the CT rate by tuning the driving force. The CT driving force was tuned systematically by attaching acceptors with different electron affinities and by varying the bandgap of NPLs via thickness-controlled quantum confinement. Our data show that the charge-separated state is formed by selectively exciting either the electron donors or acceptors in the same system. Upon exciting attached acceptors, hole transfer from perylene derivatives to CsPbBr3 NPLs takes place on a picosecond time scale, showing an energetic behavior in line with the Marcus normal regime. Interestingly, such energetic behavior is absent upon exciting the electron donor, suggesting that the dominant CT mechanism is energy transfer followed by ultrafast hole transfer. Our findings not only elucidate the photophysics of perovskite-molecule systems but also provide guidelines for tailoring such hybrid systems for specific applications.
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Affiliation(s)
- Zimu Wei
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Jence T. Mulder
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Rajeev K. Dubey
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Wiel H. Evers
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Wolter F. Jager
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Arjan J. Houtepen
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
| | - Ferdinand C. Grozema
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629 HZ Delft, The Netherlands
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26
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Rodríguez Ortiz F, Zhao B, Wen JR, Yim JE, Bauer G, Champ A, Sheldon MT. The Anisotropic Complex Dielectric Function of CsPbBr 3 Perovskite Nanorods Obtained via an Iterative Matrix Inversion Method. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:14812-14821. [PMID: 38356733 PMCID: PMC10863055 DOI: 10.1021/acs.jpcc.3c03423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 06/29/2023] [Indexed: 02/16/2024]
Abstract
Colloidal lead halide perovskite nanorods have recently emerged as promising optoelectronic materials. However, more information about how shape anisotropy impacts their complex dielectric function is required to aid the development of applications that take advantage of the strongly polarized absorption and emission. Here, we have determined the anisotropy of the complex dielectric function of CsPbBr3 nanorods by analyzing the ensemble absorption spectra in conjunction with the ensemble spectral fluorescence anisotropy. This strategy allows us to distinguish the absorption of light parallel and perpendicular to the main axis so that the real and imaginary components of the dielectric function along each direction can be determined by the use of an iterative matrix inversion (IMI) methodology. We find that quantum confinement gives rise to unique axis-dependent electronic features in the dielectric function that increase the overall fluorescence anisotropy in addition to the optical anisotropy that results from particle shape, even in the absence of quantum confinement. Further, the procedure outlined here provides a strategy for obtaining anisotropic complex dielectric functions of colloidal materials of varying composition and aspect ratios using ensemble solution-phase spectroscopy.
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Affiliation(s)
| | - Boqin Zhao
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Je-Ruei Wen
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Ju Eun Yim
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Giselle Bauer
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Anna Champ
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Matthew T. Sheldon
- Department
of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Department
of Materials Science and Engineering, Texas
A&M University, College Station, Texas 77843, United States
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27
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Li L, Yao J, Zhu J, Chen Y, Wang C, Zhou Z, Zhao G, Zhang S, Wang R, Li J, Wang X, Lu Z, Xiao L, Zhang Q, Zou G. Colloid driven low supersaturation crystallization for atomically thin Bismuth halide perovskite. Nat Commun 2023; 14:3764. [PMID: 37353502 DOI: 10.1038/s41467-023-39445-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 06/13/2023] [Indexed: 06/25/2023] Open
Abstract
It is challenging to grow atomically thin non-van der Waals perovskite due to the strong electronic coupling between adjacent layers. Here, we present a colloid-driven low supersaturation crystallization strategy to grow atomically thin Cs3Bi2Br9. The colloid solution drives low-concentration solute in a supersaturation state, contributing to initial heterogeneous nucleation. Simultaneously, the colloids provide a stable precursor source in the low-concentration solute. The surfactant is absorbed in specific crystal nucleation facet resulting in the anisotropic growth of planar dominance. Ionic perovskite Cs3Bi2Br9 is readily grown from monolayered to six-layered Cs3Bi2Br9 corresponding to thicknesses of 0.7, 1.6, 2.7, 3.6, 4.6 and 5.7 nm. The atomically thin Cs3Bi2Br9 presents layer-dependent nonlinear optical performance and stacking-induced second harmonic generation. This work provides a concept for growing atomically thin halide perovskite with non-van der Waal structures and demonstrates potential application for atomically thin single crystals' growth with strong electronic coupling between adjacent layers.
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Affiliation(s)
- Lutao Li
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Junjie Yao
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Juntong Zhu
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Yuan Chen
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Chen Wang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Zhicheng Zhou
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Guoxiang Zhao
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Sihan Zhang
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Ruonan Wang
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Jiating Li
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Xiangyi Wang
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Zheng Lu
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Lingbo Xiao
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China
| | - Qiang Zhang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, China
| | - Guifu Zou
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, China.
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28
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Mecca S, Pallini F, Pinchetti V, Erroi A, Fappani A, Rossi F, Mattiello S, Vanacore GM, Brovelli S, Beverina L. Multigram-Scale Synthesis of Luminescent Cesium Lead Halide Perovskite Nanobricks for Plastic Scintillators. ACS APPLIED NANO MATERIALS 2023; 6:9436-9443. [PMID: 37325014 PMCID: PMC10262149 DOI: 10.1021/acsanm.3c01146] [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: 03/14/2023] [Accepted: 05/12/2023] [Indexed: 06/17/2023]
Abstract
Cesium lead halide perovskite nanocrystals of general formula CsPbX3 are having tremendous impact on a vast array of technologies requiring strong and tunable luminescence across the visible range and solutions processing. The development of plastic scintillators is just one of the many relevant applications. The syntheses are relatively simple but generally unsuitable to produce a large amount of material of reproducible quality required when moving from proof-of-concept scale to industrial applications. Wastes, particularly large amounts of lead-contaminated toxic and flammable organic solvents, are also an open issue. We describe a simple and reproducible procedure enabling the synthesis of luminescent CsPbX3 nanobricks of constant quality on a scale going from 0.12 to 8 g in a single batch. We also show complete recycling of the reaction wastes, leading to dramatically improved efficiency and sustainability.
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Affiliation(s)
- Sara Mecca
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Francesca Pallini
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Valerio Pinchetti
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Andrea Erroi
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Alice Fappani
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Francesca Rossi
- IMEM-CNR
Institute, Parco Area
delle Scienze 37/A, 43124 Parma, Italy
| | - Sara Mattiello
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Giovanni Maria Vanacore
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Sergio Brovelli
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
| | - Luca Beverina
- Department
of Materials Science, University of Milano-Bicocca, via R. Cozzi 55, I-20126 Milan, Italy
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29
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Carwithen BP, Hopper TR, Ge Z, Mondal N, Wang T, Mazlumian R, Zheng X, Krieg F, Montanarella F, Nedelcu G, Kroll M, Siguan MA, Frost JM, Leo K, Vaynzof Y, Bodnarchuk MI, Kovalenko MV, Bakulin AA. Confinement and Exciton Binding Energy Effects on Hot Carrier Cooling in Lead Halide Perovskite Nanomaterials. ACS NANO 2023; 17:6638-6648. [PMID: 36939330 PMCID: PMC10100565 DOI: 10.1021/acsnano.2c12373] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
The relaxation of the above-gap ("hot") carriers in lead halide perovskites (LHPs) is important for applications in photovoltaics and offers insights into carrier-carrier and carrier-phonon interactions. However, the role of quantum confinement in the hot carrier dynamics of nanosystems is still disputed. Here, we devise a single approach, ultrafast pump-push-probe spectroscopy, to study carrier cooling in six different size-controlled LHP nanomaterials. In cuboidal nanocrystals, we observe only a weak size effect on the cooling dynamics. In contrast, two-dimensional systems show suppression of the hot phonon bottleneck effect common in bulk perovskites. The proposed kinetic model describes the intrinsic and density-dependent cooling times accurately in all studied perovskite systems using only carrier-carrier, carrier-phonon, and excitonic coupling constants. This highlights the impact of exciton formation on carrier cooling and promotes dimensional confinement as a tool for engineering carrier-phonon and carrier-carrier interactions in LHP optoelectronic materials.
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Affiliation(s)
- Ben P. Carwithen
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Thomas R. Hopper
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
- Department
of Materials Science and Engineering, Stanford
University, Stanford, California 94305, United States
| | - Ziyuan Ge
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Navendu Mondal
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Tong Wang
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Rozana Mazlumian
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Xijia Zheng
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Franziska Krieg
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Federico Montanarella
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Georgian Nedelcu
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
- Zernike
Institute for Advanced Materials, University
of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
| | - Martin Kroll
- Center
for
Advancing Electronics Dresden, Technische
Universität Dresden, 01069 Dresden, Germany
- Integrated
Center for Applied Photophysics and Photonic Materials, Technische Universität Dresden, 01187 Dresden, Germany
| | - Miguel Albaladejo Siguan
- Chair
for Emerging Electronic Technologies, Technische
Universität Dresden, 01187 Dresden, Germany
- Leibniz
Institute for Solid State and Materials Research Dresden, Technische Universität Dresden, 01069 Dresden, Germany
| | - Jarvist M. Frost
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
| | - Karl Leo
- Integrated
Center for Applied Photophysics and Photonic Materials, Technische Universität Dresden, 01187 Dresden, Germany
| | - Yana Vaynzof
- Chair
for Emerging Electronic Technologies, Technische
Universität Dresden, 01187 Dresden, Germany
- Leibniz
Institute for Solid State and Materials Research Dresden, Technische Universität Dresden, 01069 Dresden, Germany
| | - Maryna I. Bodnarchuk
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Maksym V. Kovalenko
- Laboratory
of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich, CH-8093 Zürich, Switzerland
- Laboratory
for Thin Films and Photovoltaics, Empa−Swiss
Federal Laboratories for Materials Science and Technology, CH-8600 Dübendorf, Switzerland
| | - Artem A. Bakulin
- Department
of Chemistry and Centre for Processable Electronics, Imperial College London, London W12 0BZ, United
Kingdom
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30
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Krajewska CJ, Kaplan AEK, Kick M, Berkinsky DB, Zhu H, Sverko T, Van Voorhis T, Bawendi MG. Controlled Assembly and Anomalous Thermal Expansion of Ultrathin Cesium Lead Bromide Nanoplatelets. NANO LETTERS 2023; 23:2148-2157. [PMID: 36884029 DOI: 10.1021/acs.nanolett.2c04526] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Quantum confined lead halide perovskite nanoplatelets are anisotropic materials displaying strongly bound excitons with spectrally pure photoluminescence. We report the controlled assembly of CsPbBr3 nanoplatelets through varying the evaporation rate of the dispersion solvent. We confirm the assembly of superlattices in the face-down and edge-up configurations by electron microscopy, as well as X-ray scattering and diffraction. Polarization-resolved spectroscopy shows that superlattices in the edge-up configuration display significantly polarized emission compared to face-down counterparts. Variable-temperature X-ray diffraction of both face-down and edge-up superlattices uncovers a uniaxial negative thermal expansion in ultrathin nanoplatelets, which reconciles the anomalous temperature dependence of the emission energy. Additional structural aspects are investigated by multilayer diffraction fitting, revealing a significant decrease in superlattice order with decreasing temperature, with a concomitant expansion of the organic sublattice and increase of lead halide octahedral tilt.
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Affiliation(s)
- Chantalle J Krajewska
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Alexander E K Kaplan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Matthias Kick
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - David B Berkinsky
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Hua Zhu
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Tara Sverko
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Troy Van Voorhis
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Moungi G Bawendi
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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31
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Kumar S, Ghosh S, Kar P. Efficient Charge-Transfer Studies for Selective Detection of Bilirubin Biomolecules Using CsPbBr 3 as the Fluorescent Probe. J Phys Chem B 2023; 127:2138-2145. [PMID: 36880850 DOI: 10.1021/acs.jpcb.2c07517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Abstract
Bright luminescence hybrid halide perovskite nanocrystals (PNCs) as a novel fluorophore class have not been broadly explored in biological sensing. Herein, we synthesized highly fluorescent CsPbBr3 PNCs through the LARP method using oleic acid and oleyl amine as capping ligands. Morphological and optical properties of as-synthesized PNCs were studied using transmission electron microscopy, X-ray diffraction, UV-vis, and emission spectroscopic analysis. Oleic acid- and oleyl amine-capped PNCs are employed for sensitive and selective detection of bilirubin (BR). A panel of characterizations (time-correlated single-photon count spectroscopy and photoluminescence (PL)) was carried out to investigate the detailed sensing study of PNCs-BR composite for quenching the PL emission of CsPbBr3 with BR. It has been noticed that the synthesized nanoparticles are highly capable of detecting BR and thus act as a biological material sensor.
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Affiliation(s)
- Sumit Kumar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Sukanya Ghosh
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
| | - Prasenjit Kar
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
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32
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Igarashi H, Yamauchi M, Masuo S. Correlation between Single-Photon Emission and Size of Cesium Lead Bromide Perovskite Nanocrystals. J Phys Chem Lett 2023; 14:2441-2447. [PMID: 36862129 DOI: 10.1021/acs.jpclett.3c00059] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Emission photon statistics of semiconductor nanocrystal quantum dots (QDs), including lead halide perovskite nanocrystals (PNCs), are important fundamental and practical optical properties. Single QDs exhibit high-probability single-photon emission owing to the efficient Auger recombination between generated excitons. Because the recombination rate depends on QD size, single-photon emission probability should be size-dependent. Previous studies have researched QDs smaller than their exciton Bohr diameters (twice the Bohr radius of excitons). Here, we investigated the relationship between the single-photon emission behavior and size of CsPbBr3 PNCs to elucidate their size threshold. Simultaneous single-nanocrystal spectroscopy and atomic force microscopy observations on single PNCs with approximately 5-25 nm edge length showed that those smaller than approximately 10 nm, which had size-dependent photoluminescence (PL) spectral shifts, exhibited high-probability single-photon emissions, which decreased linearly with PNC volume. Novel single-photon emission, size, and PL peak correlations of PNCs are important for understanding the relationship between single-photon emission and quantum confinement.
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Affiliation(s)
- Hina Igarashi
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Mitsuaki Yamauchi
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Sadahiro Masuo
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan
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Ginterseder M, Sun W, Shcherbakov-Wu W, McIsaac AR, Berkinsky DB, Kaplan AEK, Wang L, Krajewska C, Šverko T, Perkinson CF, Utzat H, Tisdale WA, Van Voorhis T, Bawendi MG. Lead Halide Perovskite Nanocrystals with Low Inhomogeneous Broadening and High Coherent Fraction through Dicationic Ligand Engineering. NANO LETTERS 2023; 23:1128-1134. [PMID: 36780509 DOI: 10.1021/acs.nanolett.2c03354] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Lead halide perovskite nanocrystals (LHP NCs) are an emerging materials system with broad potential applications, including as emitters of quantum light. We apply design principles aimed at the structural optimization of surface ligand species for CsPbBr3 NCs, leading us to the study of LHP NCs with dicationic quaternary ammonium bromide ligands. Through the selection of linking groups and aliphatic backbones guided by experiments and computational support, we demonstrate consistently narrow photoluminescence line shapes with a full-width-at-half-maximum below 70 meV. We observe bulk-like Stokes shifts throughout our range of particle sizes, from 7 to 16 nm. At cryogenic temperatures, we find sub-200 ps lifetimes, significant photon coherence, and the fraction of photons emitted into the coherent channel increasing markedly to 86%. A 4-fold reduction in inhomogeneous broadening from previous work paves the way for the integration of LHP NC emitters into nanophotonic architectures to enable advanced quantum optical investigation.
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Affiliation(s)
- Matthias Ginterseder
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Weiwei Sun
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Wenbi Shcherbakov-Wu
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alexandra R McIsaac
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - David B Berkinsky
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alexander E K Kaplan
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Lili Wang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Chantalle Krajewska
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Tara Šverko
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Collin F Perkinson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Hendrik Utzat
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - William A Tisdale
- Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Troy Van Voorhis
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Moungi G Bawendi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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34
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Zhang W, Wu H, Zeng F, Wang Y, Tang X, Niu X, Fan J. Highly Thermally Sensitive Cascaded Wannier-Mott Exciton Ionization/Carrier Localization in Manganese-Doped Perovskite Nanocrystals. J Phys Chem Lett 2023; 14:1684-1692. [PMID: 36757171 DOI: 10.1021/acs.jpclett.2c03794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Transition-metal doping in perovskite nanocrystals strongly alters the photophysical properties of these nanocrystals. However, the details of the underlying thermal and optical processes within such an intriguing symmetry-breaking nanosystem are far from clear. Herein, we study the sensitively temperature-dependent and highly competent delocalized exciton and transition-metal ion-captured carrier recombination processes in manganese-doped CsPbBr0.6Cl2.4 nanocrystals. The combined experimental and theoretical studies reveal that both the exciton ionization and capture of the band-edge carriers by the manganese ions play the dominant roles in determining the proportion of the manganese ions-dominated recombination process. A density functional theory calculation of the temporal fluctuation of the manganese ions-accommodated localized orbitals further confirms that the thermally enhanced nonadiabatic electron-phonon coupling promotes the probability of the carrier localization. These findings reveal the respective crucial roles of the exciton ionization and carrier capture in the localized recombination process in the transition-metal-doped semiconductor nanocrystals.
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Affiliation(s)
- Wenxia Zhang
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Huaxin Wu
- School of Physics, Southeast University, Nanjing 211189, P. R. China
| | - Fujia Zeng
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Yuchan Wang
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Xiaosheng Tang
- School of Optoelectronic Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, P. R. China
| | - Xianghong Niu
- New Energy Technology Engineering Laboratory of Jiangsu Province & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, P. R. China
| | - Jiyang Fan
- School of Physics, Southeast University, Nanjing 211189, P. R. China
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35
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Konoshchuk NV, Posudievsky OY, Rozovik OP, Koshechko VG, Pokhodenko VD. Structure and Optical Properties of Mechanochemically Obtained Nanocomposite CsPbBr3/h-BN. THEOR EXP CHEM+ 2023. [DOI: 10.1007/s11237-023-09748-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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36
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Tran TKT, Adewuyi JA, Wang Y, Morales-Acosta MD, Mani T, Ung G, Zhao J. Anionic ligand-induced chirality in perovskite nanoplatelets. Chem Commun (Camb) 2023; 59:1485-1488. [PMID: 36655734 DOI: 10.1039/d2cc05469h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Perovskite materials passivated by chiral ligands have recently shown unique chiroptical activity with promising optoelectronic applications. However, the ligands have been limited to chiral amines. Here, chiral phosphate molecules have been exploited to synthesize CsPbBr3 nanoplatelets. The nanoplatelets showed a distinct circular dichroism signal and maintained their chiroptical properties after purification with anti-solvent.
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Affiliation(s)
- Thi Kim Tran Tran
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Joseph A Adewuyi
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Yongchen Wang
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - M Daniela Morales-Acosta
- Institute of Materials Science, University of Connecticut, Storrs Mansfield, Connecticut 06269, USA
| | - Tomoyasu Mani
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Gaël Ung
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
| | - Jing Zhao
- Department of Chemistry, University of Connecticut, 55 North Eagleville Rd., Storrs Mansfield, Connecticut 06269-3060, USA.
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Scalon L, Freitas FS, Marques FDC, Nogueira AF. Tiny spots to light the future: advances in synthesis, properties, and application of perovskite nanocrystals in solar cells. NANOSCALE 2023; 15:907-941. [PMID: 36629010 DOI: 10.1039/d2nr05043a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Perovskites are in the hotspot of material science and technology. Outstanding properties have been discovered, fundamental mechanisms of defect formation and degradation elucidated, and applications in a wide variety of optoelectronic devices demonstrated. Advances through adjusting the bulk-perovskite composition, as well as the integration of layered and nanostructured perovskites in the devices, allowed improvement in performance and stability. Recently, efforts have been devoted to investigating the effects of quantum confinement in perovskite nanocrystals (PNCs) aiming to fabricate optoelectronic devices based solely on these nanoparticles. In general, the applications are focused on light-emitting diodes, especially because of the high color purity and high fluorescence quantum yield obtained in PNCs. Likewise, they present important characteristics featured for photovoltaic applications, highlighting the possibility of stabilizing photoactive phases that are unstable in their bulk analog, the fine control of the bandgap through size change, low defect density, and compatibility with large-scale deposition techniques. Despite the progress made in the last years towards the improvement in the performance and stability of PNCs-based solar cells, their efficiency is still much lower than that obtained with bulk perovskite, and discussions about upscaling of this technology are scarce. In light of this, we address in this review recent routes towards efficiency improvement and the up-scaling of PNC solar cells, emphasizing synthesis management and strategies for solar cell fabrication.
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Affiliation(s)
- Lucas Scalon
- Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil.
| | - Flavio Santos Freitas
- Centro Federal de Educação Tecnológica de Minas Gerais, Minas Gerais 30421-169, Brazil
| | | | - Ana Flávia Nogueira
- Institute of Chemistry, University of Campinas, Campinas, São Paulo 13083-970, Brazil.
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38
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Soultati A, Tountas M, Armadorou KK, Yusoff ARBM, Vasilopoulou M, Nazeeruddin MK. Synthetic approaches for perovskite thin films and single-crystals. ENERGY ADVANCES 2023; 2:1075-1115. [DOI: 10.1039/d3ya00098b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Halide perovskites are compelling candidates for the next generation of photovoltaic technologies owing to an unprecedented increase in power conversion efficiency and their low cost, facile fabrication and outstanding semiconductor properties.
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Affiliation(s)
- Anastasia Soultati
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research Demokritos, 15341 Agia Paraskevi, Attica, Greece
| | - Marinos Tountas
- Department of Electrical Engineering, Hellenic Mediterranean University, Estavromenos, 71410 Heraklion Crete, Greece
| | - Konstantina K. Armadorou
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research Demokritos, 15341 Agia Paraskevi, Attica, Greece
| | - Abd. Rashid bin Mohd Yusoff
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
| | - Maria Vasilopoulou
- Institute of Nanoscience and Nanotechnology, National Centre for Scientific Research Demokritos, 15341 Agia Paraskevi, Attica, Greece
| | - Mohammad Khaja Nazeeruddin
- Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Rue de l’Industrie 17, CH-1951 Sion, Switzerland
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39
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Cao S, Su Y, Song KK, Qian P, Yan Y, Shi LB. Biaxial strain improving carrier mobility for inorganic perovskite: ab initioBoltzmann transport equation. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 35:055702. [PMID: 36395506 DOI: 10.1088/1361-648x/aca3eb] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Inorganic halide perovskites have attracted interest due to their high efficiency and low cost. Considering the uncertainty of experimental measurements, it was important to predict the upper limit of carrier mobility. In this study, theab initioBoltzmann transport equation, including all electron-phonon interactions, was used to accurately predict the mobilities of CsPbI3, CsSnI3, CsPbBr3, and CsSnBr3. Using the iterative Boltzmann transport equation (IBTE), the calculated mobility for CsPbI3isµe= 512/µh= 379 cm2 V-1 s-1, and Sn-based perovskite exhibited high hole mobility. The longitudinal optical phonons associated with the stretching between halogen anions and divalent metal cations were revealed to be the dominant scattering source for the carriers. Furthermore, the effect of biaxial strain on mobility was investigated. We observed that biaxial compressive strain could improve the mobility of CsPbI3and CsPbBr3. Surprisingly, under a compressive strain of-2%, the mobilities of CsPbI3using IBTE approach were improved toµe= 1176/µh= 936 cm2 V-1 s-1. It was revealed that the compressive strain could decrease the effective mass of CsPbI3and CsPbBr3.
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Affiliation(s)
- Shuo Cao
- Beijing Advanced Innovation Center for Materials Genome Engineering, Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| | - Ye Su
- Department of Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| | - Ke-Ke Song
- Department of Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| | - Ping Qian
- Department of Physics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| | - Yu Yan
- Beijing Advanced Innovation Center for Materials Genome Engineering, Corrosion and Protection Center, University of Science and Technology Beijing, Beijing 100083, People's Republic of China
| | - Li-Bin Shi
- College of Physical Science and Technology, Bohai University, Jinzhou 121013, People's Republic of China
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40
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Khattak SA, Wabaidur SM, Islam MA, Husain M, Ullah I, Zulfiqar S, Rooh G, Rahman N, Khan MS, Khan G, Khan T, Ghlamallah B. First-principles structural, elastic and optoelectronics study of sodium niobate and tantalate perovskites. Sci Rep 2022; 12:21700. [PMID: 36522441 PMCID: PMC9755528 DOI: 10.1038/s41598-022-26250-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 12/12/2022] [Indexed: 12/23/2022] Open
Abstract
The intensified quest for efficient materials drives us to study the alkali (Na)-based niobate (NaNbO3) and tantalate (NaTaO3) perovskites while exploiting the first-principles approach based on density functional theory, coded within WIEN2K. While using the Birch Murnaghan fit, we find these materials to be stable structurally. Similarly, the ab-initio molecular dynamics simulations (AIMD) at room temperature reveals that the compounds exhibit no structural distortion and are stable at room temperature. By using the recommended modified Becke-Johnson potential, we determine the electronic characteristics of the present materials providing insight into their nature: they are revealed to be indirect semiconductors with the calculated bandgaps of 2.5 and 3.8 eV for NaNbO3 and NaTaO3, respectively. We also determine the total and partial density of states for both materials and the results obtained for the bandgap energies of these materials are consistent with those determined by the band structure. We find that both compounds exhibit transparency to the striking photon at low energy and demonstrate absorption and optical conduction in the UV region. The elastic study shows that these compounds are mechanically stable, whereas NaNbO3 exhibits stronger ability to withstand compressive as well as shear stresses and resists change in shape while NaTaO3 demonstrates weaker ability to resist change in volume. We also find that none of the compound is perfectly isotropic and NaNbO3 and NaTaO3 are ductile and brittle in nature, respectively. By studying the optical properties of these materials, we infer that they are promising candidates for applications in optoelectronic devices. We believe that this report will invoke the experimental studies for further investigation.
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Affiliation(s)
- Shaukat Ali Khattak
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Saikh Mohammad Wabaidur
- grid.56302.320000 0004 1773 5396Chemistry Department, College of Science, King Saud University, Riyadh, 11451 Saudi Arabia
| | - Md Ataul Islam
- grid.5379.80000000121662407Division of Pharmacy and Optometry, School of Health Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Mudasser Husain
- grid.513214.0Department of Physics, University of Lakki Marwat, Lakki Marwat, 28420 Pakistan
| | - Irfan Ullah
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Syed Zulfiqar
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Gul Rooh
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Nasir Rahman
- grid.513214.0Department of Physics, University of Lakki Marwat, Lakki Marwat, 28420 Pakistan
| | - Muhammad Salman Khan
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Gulzar Khan
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Tahirzeb Khan
- grid.440522.50000 0004 0478 6450Department of Physics, Abdul Wali Khan University Mardan, Mardan, 23200 Pakistan
| | - Benabdellah Ghlamallah
- Department of Physics, Faculty of Matter Sciences, University of Tiaret, Laboratory of Physical Engineering, Tiaret, Algeria
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Yao J, Zhou Z, Li L, Chen Y, Wang C, Wang X, Lu Z, Bai Z, Zhang Q, Huangfu X, Sun Y, Xu H, Zou G. Zero-Dimensional Cs 3BiX 6 (X = Br, Cl) Single Crystal Films with Second Harmonic Generation. NANOSCALE RESEARCH LETTERS 2022; 17:115. [PMID: 36478063 PMCID: PMC9729671 DOI: 10.1186/s11671-022-03759-4] [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: 10/29/2022] [Accepted: 11/27/2022] [Indexed: 06/17/2023]
Abstract
The development of atomically thin single crystal films is necessary to potential applications in the 2D semiconductor field, and it is significant to explore new physical properties in low-dimensional semiconductors. Since, zero-dimensional (0D) materials without natural layering are connected by strong chemical bonds, it is challengeable to break symmetry and grow 0D Cs3BiX6 (X = Br, Cl) single crystal thin films. Here, we report the successful growth of 0D Cs3BiX6 (X = Br, Cl) single crystal films using a solvent evaporation crystallization strategy. Their phases and structures are both well evaluated to confirm 0D Cs3BiX6 (X = Br, Cl) single crystal films. Remarkably, the chemical potential dependent morphology evolution phenomenon is observed. It gives rise to morphology changes of Cs3BiBr6 films from rhombus to hexagon as BiBr3 concentration increased. Additionally, the robust second harmonic generation signal is detected in the Cs3BiBr6 single crystal film, demonstrating the broken symmetry originated from decreased dimension or shape change.
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Affiliation(s)
- Junjie Yao
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Zhicheng Zhou
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China
| | - Lutao Li
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China
| | - Yuan Chen
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China.
| | - Chen Wang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Xiangyi Wang
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China
| | - Zheng Lu
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China
| | - Zhongchao Bai
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Qiang Zhang
- College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao, 266590, People's Republic of China
| | - Xuefeng Huangfu
- School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, People's Republic of China
| | - Yinghui Sun
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China
| | - Hao Xu
- School of Physics, University of Electronic Science and Technology of China, Chengdu, 610054, People's Republic of China
- Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, People's Republic of China
| | - Guifu Zou
- School of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou, 215006, People's Republic of China.
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42
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Gao Q, Qi J, Chen K, Xia M, Hu Y, Mei A, Han H. Halide Perovskite Crystallization Processes and Methods in Nanocrystals, Single Crystals, and Thin Films. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2200720. [PMID: 35385587 DOI: 10.1002/adma.202200720] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2022] [Revised: 03/27/2022] [Indexed: 06/14/2023]
Abstract
Halide perovskite semiconductors with extraordinary optoelectronic properties have been fascinatedly studied. Halide perovskite nanocrystals, single crystals, and thin films have been prepared for various fields, such as light emission, light detection, and light harvesting. High-performance devices rely on high crystal quality determined by the nucleation and crystal growth process. Here, the fundamental understanding of the crystallization process driven by supersaturation of the solution is discussed and the methods for halide perovskite crystals are summarized. Supersaturation determines the proportion and the average Gibbs free energy changes for surface and volume molecular units involved in the spontaneous aggregation, which could be stable in the solution and induce homogeneous nucleation only when the solution exceeds a required minimum critical concentration (Cmin ). Crystal growth and heterogeneous nucleation are thermodynamically easier than homogeneous nucleation due to the existent surfaces. Nanocrystals are mainly prepared via the nucleation-dominated process by rapidly increasing the concentration over Cmin , single crystals are mainly prepared via the growth-dominated process by keeping the concentration between solubility and Cmin , while thin films are mainly prepared by compromising the nucleation and growth processes to ensure compactness and grain sizes. Typical strategies for preparing these three forms of halide perovskites are also reviewed.
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Affiliation(s)
- Qiaojiao Gao
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Jianhang Qi
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Kai Chen
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Minghao Xia
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Yue Hu
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Anyi Mei
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
| | - Hongwei Han
- Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Key Laboratory of Materials Chemistry for Energy Conversion and Storage of Ministry of Education, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, P. R. China
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43
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Piotrowski M, Ge Z, Wang Y, Bandela AK, Thumu U. Programmable precise kinetic control over crystal phase, size, and equilibrium in spontaneous metathesis reaction for Cs-Pb-Br nanostructure patterns at room temperature. NANOSCALE 2022; 14:16806-16815. [PMID: 36300506 DOI: 10.1039/d2nr04102b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Growth kinetics involved in spontaneous random clustering of perovskite precursors to a particular cesium-lead-bromide (Cs-Pb-Br) nanocrystal (NC) is a poorly understood phenomenon and its spectroscopic investigation is highly challenging. There is scarcely any method that has been optimized yet in which perovskites and their related NCs of a particular size can be grown, viewed, or tuned to another by reaction handling. Here, for the first time, we shed light on the largely overlooked process of growth kinetics of these transformations throughout the reaction trajectory of anionic [PbBrx]n- crystallization dictated by Cs+ cation and report a simple and direct approach to control the metathesis reaction between two precursors (specifically Cs+- and PbBr2-associated oligomeric complexes) in one solvent at room temperature to monitor the NC growth characteristics in a stepwise manner even in the early stages of nucleation. Altering the molar ratio of the two precursors up to a factor of 10 leads to the formation of three prominent phases (CsPbBr3, Cs4PbBr6, CsBr) as dictated by Cs+ to trigger distinct morphological forms (nanobelts, nanoplatelets, rhombohedral NCs, pseudo-rhombic NCs, spherical CsBr NCs, cubic CsBr NCs) including a transient phase that is formed out of linearly self-assembled CsPbBr3 clusters. Our results pave the way towards understanding spontaneous crystallization to develop well-defined, hassle-free routes for diverse perovskite NCs in a simple yet controlled manner.
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Affiliation(s)
- Marek Piotrowski
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Zhongsheng Ge
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Yixi Wang
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
| | - Anil Kumar Bandela
- Department of Chemistry, Ben Gurion University of the Negev Beer, Sheva 84105, Israel.
| | - Udayabhaskararao Thumu
- Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China.
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Barfüßer A, Rieger S, Dey A, Tosun A, Akkerman QA, Debnath T, Feldmann J. Confined Excitons in Spherical-Like Halide Perovskite Quantum Dots. NANO LETTERS 2022; 22:8810-8817. [PMID: 36251337 DOI: 10.1021/acs.nanolett.2c02223] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Quantum dots (QDs) offer unique physical properties and novel application possibilities like single-photon emitters for quantum technologies. While strongly confined III-V and II-VI QDs have been studied extensively, their complex valence band structure often limits clear observations of individual transitions. In recently emerged lead-halide perovskites, band degeneracies are absent around the bandgap reducing the complexity of optical spectra. We show that for spherical-like CsPbBr3 QDs with diameters >6 nm, excitons confine with respect to their center-of-mass motion leading to well-pronounced resonances in their absorption spectra. Optical pumping of the lowest-confined exciton with femtosecond laser pulses not only bleaches all excitons but also reveals a series of distinct induced absorption resonances which we attribute to exciton-to-biexciton transitions and are red-shifted by the biexciton binding energy (∼40 meV). The temporal dynamics of the bleached excitons further support our exciton confinement model. Our study provides the first insight into confined excitons in CsPbBr3 QDs and gives a detailed understanding of their linear and nonlinear optical spectra.
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Affiliation(s)
- Anja Barfüßer
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Sebastian Rieger
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Amrita Dey
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Ahmet Tosun
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Quinten A Akkerman
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Tushar Debnath
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
| | - Jochen Feldmann
- Chair for Photonics and Optoelectronics, Nano-Institute Munich and Department of Physics, Ludwig-Maximilians-Universität (LMU), Königinstrasse 10, 80539Munich, Germany
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45
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Pathipati SR, Shah MN, Akhil S, Mishra N. In situ synthesis of high-quantum-efficiency and stable bromide-based blue-emitting perovskite nanoplatelets. NANOSCALE ADVANCES 2022; 4:4766-4781. [PMID: 36381516 PMCID: PMC9642352 DOI: 10.1039/d2na00354f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
We present a facile synthetic approach for the growth of two-dimensional CsPbBr3 nanoplatelets (NPLs) in the temperature range of 50-80 °C via the vacuum-assisted low-temperature (VALT) method. In this method, we utilized the solubility of the PbBr2 precursor at temperatures high than the reaction temperature, thus making Br available during the reaction to form NPLs with fewer defects. The high chemical availability of Br during the reaction changes the growth dynamics and formation of highly crystalline nanoplatelets. Using this method, we have synthesized NPLs with an emission wavelength range of 450 to 485 nm that have high photoluminescence quantum yields (PLQY) from 80 to 100%. The synthesized NPLs retain their initial PLQY of about 80% after one month at ambient conditions. The formation of NPLs with fewer defects and enhanced radiative recombination was further confirmed by X-ray diffraction (XRD), reduced Urbach energy, time-resolved photocurrent measurements, X-ray photoelectron spectroscopy (XPS), and Fourier-transform infrared (FTIR) spectroscopy. Additionally, we utilized the synthesized NPLs for the fabrication of down-conversion light emitting diodes (LEDs), and the electroluminescence peak was barely shifted compared to the photoluminescence peak.
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Affiliation(s)
- Srinivasa Rao Pathipati
- Laboratory for Semiconductor Research, Department of Physics, School of Applied Science and Humanities, Vignan's Foundation for Science, Technology, and Research (Deemed University) Vadlamudi Guntur Andhra Pradesh India 522213
| | - Muhammad Naeem Shah
- College of Electronics and Information Engineering, Shenzhen University Shenzhen Guangdong P. R. China 518000
| | - Syed Akhil
- Department of Chemistry, SRM University - AP, Andhra Pradesh Neerukonda, Guntur Andhra Pradesh 522240 India
| | - Nimai Mishra
- Department of Chemistry, SRM University - AP, Andhra Pradesh Neerukonda, Guntur Andhra Pradesh 522240 India
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46
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Skurlov ID, Sokolova AV, Tatarinov DA, Parfenov PS, Kurshanov DA, Ismagilov AO, Koroleva AV, Danilov DV, Zhizhin EV, Mikushev SV, Tcypkin AN, Fedorov AV, Litvin AP. Engineering the Optical Properties of CsPbBr 3 Nanoplatelets through Cd 2+ Doping. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7676. [PMID: 36363269 PMCID: PMC9657966 DOI: 10.3390/ma15217676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 10/29/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
Lead halide perovskite nanoplatelets (NPls) attract significant attention due to their exceptional and tunable optical properties. Doping is a versatile strategy for modifying and improving the optical properties of colloidal nanostructures. However, the protocols for B-site doping have been rarely reported for 2D perovskite NPls. In this work, we investigated the post-synthetic treatment of CsPbBr3 NPls with different Cd2+ sources. We show that the interplay between Cd2+ precursor, NPl concentrations, and ligands determines the kinetics of the doping process. Optimization of the treatment allows for the boosting of linear and nonlinear optical properties of CsPbBr3 NPls via doping or/and surface passivation. At a moderate doping level, both the photoluminescence quantum yield and two-photon absorption cross section increase dramatically. The developed protocols of post-synthetic treatment with Cd2+ facilitate further utilization of perovskite NPls in nonlinear optics, photonics, and lightning.
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Affiliation(s)
- Ivan D. Skurlov
- PhysNano Department, ITMO University, 197101 Saint Petersburg, Russia
| | | | | | - Peter S. Parfenov
- PhysNano Department, ITMO University, 197101 Saint Petersburg, Russia
| | | | - Azat O. Ismagilov
- Laboratory of Quantum Processes and Measurements, ITMO University, 197101 Saint Petersburg, Russia
| | | | - Denis V. Danilov
- Research Park, Saint Petersburg State University, 199034 Saint Petersburg, Russia
| | - Evgeniy V. Zhizhin
- Research Park, Saint Petersburg State University, 199034 Saint Petersburg, Russia
| | - Sergey V. Mikushev
- Research Park, Saint Petersburg State University, 199034 Saint Petersburg, Russia
| | - Anton N. Tcypkin
- Laboratory of Quantum Processes and Measurements, ITMO University, 197101 Saint Petersburg, Russia
| | | | - Aleksandr P. Litvin
- PhysNano Department, ITMO University, 197101 Saint Petersburg, Russia
- Laboratory of Quantum Processes and Measurements, ITMO University, 197101 Saint Petersburg, Russia
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47
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Zhu H, Šverko T, Zhang J, Berkinsky DB, Sun W, Krajewska CJ, Bawendi MG. One-Dimensional Highly-Confined CsPbBr 3 Nanorods with Enhanced Stability: Synthesis and Spectroscopy. NANO LETTERS 2022; 22:8355-8362. [PMID: 36223648 DOI: 10.1021/acs.nanolett.2c03458] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
One-dimensional (1D) colloidal lead halide perovskites (LHPs) have potential as quantum emitters. Their study, however, has been hampered by their previous instability, leaving a gap in our understanding of structure-property relationships in colloidal LHPs with anisotropic shapes. Here, we synthesize stable, highly-confined 1D CsPbBr3 nanorods (NRs) and demonstrate their structural details and photoluminescence (PL) properties at both the ensemble and single particle levels. Using amino-terminated copolymers, we are able to stabilize and characterize 1D CsPbBr3 NRs utilizing transmission electron microscopy (TEM) and small angle scattering (SAS). Scanning transmission electron microscopy reveals that these NRs possess structural defects, including twists and inhomogeneity. Solution-phase photon correlation spectroscopy shows low biexciton-to-exciton quantum yield ratios (QYBX/QYX) and broad spectral line widths dominated by homogeneous broadening.
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Affiliation(s)
- Hua Zhu
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Tara Šverko
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Juanye Zhang
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - David B Berkinsky
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Weiwei Sun
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Chantalle J Krajewska
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Moungi G Bawendi
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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48
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Bhatia H, Ghosh B, Debroye E. Colloidal FAPbBr 3 perovskite nanocrystals for light emission: what's going on? JOURNAL OF MATERIALS CHEMISTRY. C 2022; 10:13437-13461. [PMID: 36324302 PMCID: PMC9521414 DOI: 10.1039/d2tc01373h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/06/2022] [Indexed: 06/16/2023]
Abstract
Semiconducting nanomaterials have been widely explored in diverse optoelectronic applications. Colloidal lead halide perovskite nanocrystals (NCs) have recently been an excellent addition to the field of nanomaterials, promising an enticing building block in the field of light emission. In addition to the notable optoelectronic properties of perovskites, the colloidal NCs exhibit unique size-dependent optical properties due to the quantum size effect, which makes them highly attractive for light-emitting diodes (LEDs). In the past few years, perovskite-based LEDs (PeLEDs) have demonstrated a meteoritic rise in their external quantum efficiency (EQE) values, reaching over 20% so far. Among various halide perovskite compositions, FAPbBr3 and its variants remain one of the most interesting and sought-after compounds for green light emission. This review focuses on recent progress in the design and synthesis protocols of colloidal FAPbBr3 NCs and the emerging concepts in tailoring their surface chemistry. The structural and physicochemical features of lead halide perovskites along with a comprehensive discussion on their defect-tolerant properties are briefly outlined. Later, the prevalent synthesis, ligand, and compositional engineering strategies to boost the stability and photoluminescence quantum yield (PLQY) of FAPbBr3 NCs are extensively discussed. Finally, the fundamental concepts and recent progress on FAPbBr3-based LEDs, followed by a discussion of the challenges and prospects that are on the table for this enticing class of perovskites, are reviewed.
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Affiliation(s)
- Harshita Bhatia
- Department of Chemistry, KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Biplab Ghosh
- cMACS, Department of Microbial and Molecular Systems, KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium
| | - Elke Debroye
- Department of Chemistry, KU Leuven Celestijnenlaan 200F B-3001 Leuven Belgium
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49
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Das R, Patra A, Dutta SK, Shyamal S, Pradhan N. Facets-Directed Epitaxially Grown Lead Halide Perovskite-Sulfobromide Nanocrystal Heterostructures and Their Improved Photocatalytic Activity. J Am Chem Soc 2022; 144:18629-18641. [PMID: 36174102 DOI: 10.1021/jacs.2c08639] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lead halide perovskite nanocrystal heterostructures have been extensively studied in the recent past for improving their photogenerated charge carriers mobility. However, most of such heterostructures are formed with random connections without having strong evidence of epitaxial relation. Perovskite-chalcohalides are the first in this category, where all-inorganic heterostructures are formed with epitaxial growth. Going beyond one facet, herein, different polyhedral nanocrystals of CsPbBr3 are explored for facet-selective secondary epitaxial sulfobromide growths. Following a decoupled synthesis process, the heterojunctions are selectively established along {110} as well as {200} facets of 26-faceted rhombicuboctahedrons, the {110} facets of armed hexapods, and the {002} facets of 12-faceted dodecahedron nanocrystals of orthorhombic CsPbBr3. Lattice matching induced these epitaxial growths, and their heterojunctions have been extensively studied with electron microscopic imaging. Unfortunately, these heterostructures did not retain the intense host emission because of their indirect band structures, but such combinations are found to be ideal for promoting photocatalytic CO2 reduction. The pseudo-Type-II combination helped here in the successful movement of charge carriers and also improved the rate of catalysis. These results suggest that facet-selective all-inorganic perovskite heterostructures can be epitaxially grown and this could help in improving their catalytic activities.
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Affiliation(s)
- Rajdeep Das
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Avijit Patra
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Sumit Kumar Dutta
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Sanjib Shyamal
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
| | - Narayan Pradhan
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
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50
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Wang CW, Liu X, Qiao T, Khurana M, Akimov AV, Son DH. Photoemission of the Upconverted Hot Electrons in Mn-Doped CsPbBr 3 Nanocrystals. NANO LETTERS 2022; 22:6753-6759. [PMID: 35939549 DOI: 10.1021/acs.nanolett.2c02342] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Hot electrons play a crucial role in enhancing the efficiency of photon-to-current conversion or photocatalytic reactions. In semiconductor nanocrystals, energetic hot electrons capable of photoemission can be generated via the upconversion process involving the dopant-originated intermediate state, currently known only in Mn-doped cadmium chalcogenide quantum dots. Here, we report that Mn-doped CsPbBr3 nanocrystals are an excellent platform for generating hot electrons via upconversion that can benefit from various desirable exciton properties and the structural diversity of metal halide perovskites (MHPs). Two-dimensional Mn-doped CsPbBr3 nanoplatelets are particularly advantageous for hot electron upconversion due to the strong exciton-dopant interaction mediating the upconversion process. Furthermore, nanoplatelets reveal evidence for the hot electron upconversion via long-lived dark excitons in addition to bright excitons that may enhance the upconversion efficiency. This study establishes the feasibility of hot electron upconversion in MHP hosts and demonstrates the potential merits of two-dimensional MHP nanocrystals in the upconversion process.
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Affiliation(s)
- Chih-Wei Wang
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Xiaohan Liu
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, United States
| | - Tian Qiao
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
| | - Mohit Khurana
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, United States
| | - Alexey V Akimov
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, United States
| | - Dong Hee Son
- Department of Chemistry, Texas A&M University, College Station, Texas 77843, United States
- Center for Nanomedicine, Institute for Basic Science and Graduate Program of Nano Biomedical Engineering, Advanced Science Institute, Yonsei University, Seoul 03722, Republic of Korea
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