1
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Ye B, Wang B, Gu Y, Guo J, Zhang X, Qian W, Zhang X, Yang G, Gan Z, Liu Y. Visible-ultraviolet dual-band photodetectors based on an all-inorganic CsPbCl 3/p-GaN heterostructure. NANOSCALE ADVANCES 2024; 6:3073-3081. [PMID: 38868825 PMCID: PMC11166122 DOI: 10.1039/d3na01009k] [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: 11/17/2023] [Accepted: 04/17/2024] [Indexed: 06/14/2024]
Abstract
All-inorganic metal halide perovskites (MHPs) have attracted increasing attention because of their high thermal stability and band gap tunability. Among them, CsPbCl3 is considered a promising semiconductor material for visible-ultraviolet dual-band photodetectors because of its excellent photoelectric properties and suitable band gap value. In this work, we fabricated a visible-ultraviolet dual-band photodetector based on a CsPbCl3/p-GaN heterojunction using the spin coating method. The formation of the heterojunction enables the device to exhibit obvious dual-band response behavior at positive and negative bias voltages. At the same time, the dark current of the device can be as low as 2.42 × 10-9 A, and the corresponding detection rate can reach 5.82 × 1010 Jones. In addition, through simulation calculations, it was found that the heterojunction has a type II energy band arrangement, and the heterojunction response band light absorption is significantly enhanced. The type II energy band arrangement will separate electron-hole pairs more effectively, which will help improve device performance. The successful implementation of visible-ultraviolet dual-band photodetectors based on a CsPbCl3/p-GaN heterojunction provides guidance for the application of all-inorganic MHPs in the field of multi-band photodetectors.
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Affiliation(s)
- Bingjie Ye
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Boxiang Wang
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Yan Gu
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Jiarui Guo
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Xiumei Zhang
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Weiying Qian
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Xiangyang Zhang
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Guofeng Yang
- School of Internet of Things Engineering, Jiangnan University Wuxi 214122 China
| | - Zhixing Gan
- Center for Future Optoelectronic Functional Materials, School of Computer and Electronic Information/School of Artificial Intelligence, Nanjing Normal University Nanjing 210023 China
| | - Yushen Liu
- Yancheng Polytechnic College Yancheng 224005 China
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2
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Xie C, Zhang X, Chen HS, Yang P. Synthesis-Kinetics of Violet- and Blue-Emitting Perovskite Nanocrystals with High Brightness and Superior Stability toward Flexible Conversion Layer. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2308896. [PMID: 38057136 DOI: 10.1002/smll.202308896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 11/08/2023] [Indexed: 12/08/2023]
Abstract
The low photoluminescence (PL) efficiency and unstable features of small blue-emitting CsPbX3 nanocrystals (NCs) greatly limit their applications in optoelectronics field. Herein, the synergistic and post-treatment kinetics are studied to create highly bright and anomalous stable violet (peak position of ≈408 nm) and blue (peak position of ∼ 466 nm) emitting perovskite NCs. Ligand and ion exchange mechanism are systematic studied by the evolution of absorption, PL, and fluorescence lifetime to evaluate ligand bonding, defect engineering, and non-radiative recombination. Didodecyl dimethyl mmonium chloride (DDAC) and CuX2 post-synergistic treatment created DDAC-CsPbCl3-CuCl2 and DDAC-CsPbCl3-CuBr2 NCs that remained the phase composition, morphology, and size of CsPbCl3 NCs. The PL efficiencies are drastically increased to 42 and 85% for violet- and blue-emitting NCs, respectively. The stability test indicated that the NCs enable against various harsh conditions (e.g., ultraviolet light irradiation and heat-treatment). The NCs retained their initial PL efficiency after 2 months under ambient conditions and UV light irradiation. These NCs also exhibited high stability after heat-treatment at 120 °C. The emitting NCs embedded in flexible films still revealed bright PL and high stability, suggesting current results provide a new avenue for the application in the field of optoelectronics.
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Affiliation(s)
- Cong Xie
- School of Material Science & Engineering, University of Jinan, Jinan, 250022, P. R. China
| | - Xiao Zhang
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24 St., Krakow, 31-155, Poland
| | - Hsueh Shih Chen
- Department of Materials Science & Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Ping Yang
- School of Material Science & Engineering, University of Jinan, Jinan, 250022, P. R. China
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3
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Lian W, Tu D, Weng X, Yang K, Li F, Huang D, Zhu H, Xie Z, Chen X. Near-Infrared Nanophosphors Based on CuInSe 2 Quantum Dots with Near-Unity Photoluminescence Quantum Yield for Micro-LEDs Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311011. [PMID: 38041490 DOI: 10.1002/adma.202311011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 11/27/2023] [Indexed: 12/03/2023]
Abstract
Highly efficient near-infrared (NIR) luminescent nanomaterials are urgently required for portable mini or micro phosphors-converted light-emitting diodes (pc-LEDs). However, most existing NIR-emitting phosphors are generally restricted by their low photoluminescence (PL) quantum yield (QY) or large particle size. Herein, a kind of highly efficient NIR nanophosphors is developed based on copper indium selenide quantum dots (CISe QDs). The PL peak of these QDs can be exquisitely manipulated from 750 to 1150 nm by altering the stoichiometry of Cu/In and doping with Zn2+ . Their absolute PLQY can be significantly improved from 28.6% to 92.8% via coating a ZnSe shell. By combining the phosphors with a commercial blue chip, an NIR pc-LED is fabricated with remarkable photostability and a record-high radiant flux of 88.7 mW@350 mA among the Pb/Cd-free QDs-based NIR pc-LEDs. Particularly, such QDs-based nanophosphors acted as excellent luminescence converter for NIR micro-LEDs with microarray diameters below 5 µm, which significantly exceeds the resolutions of current commercial inkjet display pixels. The findings may open new avenues for the exploration of highly efficient NIR micro-LEDs in a variety of applications.
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Affiliation(s)
- Wei Lian
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Datao Tu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian, 350108, China
| | - Xukeng Weng
- Institute of Optoelectronic Technology, Fuzhou University, Fuzhou, 350002, China
| | - Kaiyu Yang
- Institute of Optoelectronic Technology, Fuzhou University, Fuzhou, 350002, China
| | - Fushan Li
- Institute of Optoelectronic Technology, Fuzhou University, Fuzhou, 350002, China
| | - Decai Huang
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
| | - Haomiao Zhu
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Zhi Xie
- College of Mechanical and Electronic Engineering, Fujian Agriculture and Forestry University, Fuzhou, Fujian, 350002, China
| | - Xueyuan Chen
- CAS Key Laboratory of Design and Assembly of Functional Nanostructures, State Key Laboratory of Structural Chemistry, and Fujian Key Laboratory of Nanomaterials, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China
- College of Chemistry, Fuzhou University, Fuzhou, Fujian, 350108, China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, Fujian, 350108, China
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4
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Zhang J, Wang X, Wang WQ, Deng X, Yue CY, Lei XW, Gong Z. Near-Unity Green Luminescent Hybrid Manganese Halides as X-ray Scintillators. Inorg Chem 2024; 63:2647-2654. [PMID: 38262040 DOI: 10.1021/acs.inorgchem.3c03924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
The increasing demands in optoelectronic applications have driven the advancement of organic-inorganic hybrid metal halides (OIMHs), owing to their exceptional optical and scintillation properties. Among them, zero-dimensional (0D) low-toxic manganese-based scintillators have garnered significant interest due to their exceptional optical transparency and elevated photoluminescence quantum yields (PLQYs), making them promising for colorful light-emitting diodes and X-ray imaging applications. In this study, two OIMH single crystals of (Br-PrTPP)2MnBr4 (Br-PrTPP = (3-bromopropyl) triphenylphosphonium) and (Br-BuTPP)2MnBr4 (Br-BuTPP = (4-bromobutyl) triphenylphosphonium) were prepared via a facile saturated crystallization method. Benefiting from the tetrahedrally coordinated [MnBr4]2- polyhedron, both of them exhibited strong green emissions peaked at 517 nm owing to the d-d electron transition of Mn2+ with near-unity PLQYs of 99.33 and 86.85%, respectively. Moreover, benefiting from the high optical transparencies and remarkable luminescence properties, these manganese halides also exhibit excellent radioluminescent performance with the highest light yield of up to 68,000 photons MeV-1, negligible afterglow (0.4 ms), and linear response to X-ray dose rate with the lowest detection limit of 45 nGyair s-1. In X-ray imaging, the flexible film made by the composite of (Br-PrTPP)2MnBr4 and PDMS shows an ultrahigh spatial resolution of 12.78 lp mm-1, which provides a potential visualization tool for X-ray radiography.
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Affiliation(s)
- Jie Zhang
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
- College of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, Shandong 273165, P. R. China
| | - Xin Wang
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Wen-Qi Wang
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiangyuan Deng
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Cheng-Yang Yue
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Xiao-Wu Lei
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
| | - Zhongliang Gong
- School of Chemistry, Chemical Engineering and Materials, Jining University, Qufu, Shandong 273155, P. R. China
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5
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Sun C, Deng Z, Liu X, Zhang F, Lian K, Zhao Y, Zhang H, Han J, Luo M. Highly efficient and stable Cs 3Mn 0.93Zn 0.07Br 5@SiO 2 for wide color gamut backlight displays. Dalton Trans 2024; 53:2153-2158. [PMID: 38189118 DOI: 10.1039/d3dt03874b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Mn-based perovskites have become a new candidate material for backlight display applications. However, low efficiency and poor stability are the key problems limiting the application of Mn-based perovskites. In this work, Zn-doped and SiO2-encapsulated Cs3MnBr5, denoted as Cs3Mn0.93Zn0.07Br5@SiO2 (CMZBS), was successfully synthesized to improve the photoluminescence quantum yield (PLQY) and stability. After Zn doping, the PLQY increased from 51% to 72% due to the reduction in the energy transfer between [MnBr4]2-. The PLQY can be further improved to 80% after coating SiO2. Compared with Cs3MnBr5 (CMB), CMZBS showed better stability against thermal, air, light, and polar solvents (ethanol and isopropanol). In addition, a white LED (WLED) device with a CIE of (0.323, 0.325) was fabricated by integrating CMZBS and the red phosphor K2SiF6:Mn4+ on a 465 nm blue GaN chip, which exhibited a high luminous efficiency of 92 lm W-1 and excellent stability, demonstrating its great potential application in wide color gamut displays.
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Affiliation(s)
- Chun Sun
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Zhihui Deng
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Xiaohui Liu
- Key Laboratory of Magnetism and Magnetic Materials Autonomous Region, Baotou Teachers' College, Inner Mongolia University of Science and Technology, 3 Kexue Road, Baotou, 014030, P.R. China
- Zhejiang Ruico Advanced Material Co., Ltd, No. 188 Liangshan Road, Huzhou, 313018, PR China
| | - Fuhao Zhang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Kai Lian
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Yiwei Zhao
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Hu Zhang
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Jiachen Han
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
| | - Mingming Luo
- State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China.
- Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology, 5340 Xiping Road, Tianjin 300401, PR China
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6
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Liu S, Liu R, Zhang R, Chen J, Yang B. Achieving Enhanced Visible-Near-Infrared Light Absorption in Stable Lead-Free Vanadium-Based Perovskite Nanocrystals via Structural Regulation. J Phys Chem Lett 2023; 14:9646-9654. [PMID: 37870498 DOI: 10.1021/acs.jpclett.3c02477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Lead-free halide perovskites are promising materials for solar energy applications. However, their efficiency is hindered by poor light absorption in the visible-near-infrared region. Herein, we introduce vanadium (V) with low-lying ground/excited-state energy levels to form two types of stable lead-free V-based perovskite (Cs2NaVCl6 and Cs3V2Cl9) colloidal nanocrystals (NCs) with strong light absorption covering the ultraviolet to near-infrared region. We find the absorption can be further enhanced by structural regulation, in which the zero-dimensional (0D) Cs3V2Cl9 NCs show stronger and red-shifted (up to 1400 nm) light absorption compared to the three-dimensional Cs2NaVCl6 NCs. In 0D Cs3V2Cl9 NCs, [V2Cl9]3- dimers play a vital role in governing strong visible-near-infrared light absorption. We demonstrated their application for photocatalytic CO2 reduction. Our work sheds light on the structure-property relationship governing the absorption behavior, providing a novel route for tuning the light absorption ability of lead-free halide perovskites.
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Affiliation(s)
- Siping Liu
- Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, P. R. China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China
| | - Runze Liu
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China
| | - Ruiling Zhang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, P. R. China
| | - Junsheng Chen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen, Denmark
| | - Bin Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, P. R. China
- University of the Chinese Academy of Sciences, Beijing 100049, P. R. China
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7
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Liu Z, Qin X, Chen Q, Jiang T, Chen Q, Liu X. Metal-Halide Perovskite Nanocrystal Superlattice: Self-Assembly and Optical Fingerprints. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209279. [PMID: 36738101 DOI: 10.1002/adma.202209279] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 01/07/2023] [Indexed: 06/18/2023]
Abstract
Self-assembly of nanocrystals into superlattices is a fascinating process that not only changes geometric morphology, but also creates unique properties that considerably enrich the material toolbox for new applications. Numerous studies have driven the blossoming of superlattices from various aspects. These include precise control of size and morphology, enhancement of properties, exploitation of functions, and integration of the material into miniature devices. The effective synthesis of metal-halide perovskite nanocrystals has advanced research on self-assembly of building blocks into micrometer-sized superlattices. More importantly, these materials exhibit abundant optical features, including highly coherent superfluorescence, amplified spontaneous laser emission, and adjustable spectral redshift, facilitating basic research and state-of-the-art applications. This review summarizes recent advances in the field of metal-halide perovskite superlattices. It begins with basic packing models and introduces various stacking configurations of superlattices. The potential of multiple capping ligands is also discussed and their crucial role in superlattice growth is highlighted, followed by detailed reviews of synthesis and characterization methods. How these optical features can be distinguished and present contemporary applications is then considered. This review concludes with a list of unanswered questions and an outlook on their potential use in quantum computing and quantum communications to stimulate further research in this area.
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Affiliation(s)
- Zhuang Liu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Xian Qin
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
| | - Qihao Chen
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
| | - Tianci Jiang
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
| | - Qiushui Chen
- MOE Key Laboratory for Analytical Science of Food Safety and Biology, Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety, College of Chemistry, Fuzhou University, Fuzhou, 350002, China
| | - Xiaogang Liu
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, China
- Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore
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8
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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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9
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Zhu H, Tong G, Li J, Xu E, Tao X, Sheng Y, Tang J, Jiang Y. Enriched-Bromine Surface State for Stable Sky-Blue Spectrum Perovskite QLEDs With an EQE of 14.6. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2205092. [PMID: 35906787 DOI: 10.1002/adma.202205092] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Halogen vacancies are of great concern in blue-emitting perovskite quantum-dot light-emitting diodes because they affect their efficiency and spectral shift. Here, an enriched-bromine surface state is realized using a facile strategy that employs a PbBr2 stock solution for anion exchange based on Cd-doped perovskite quantum dots. It is found that the doped Cd ions are expected to reduce the formation energy of halogen vacancies filled by the external bromine ions, and the excess free bromine ions in solution are enriched in the surface by anchoring with halogen vacancies as sites, accompanied with the shedding of surface long-chain ligands during the anion exchange process, resulting in a Br-rich and "neat" surface. Moreover, the surface state exhibits good passivation of the surface defects of the controlled perovskite QDs and simultaneously increases the exciton binding energy, leading to excellent optical properties and stability. Finally, the sky-blue emitting perovskite quantum-dot light-emitting diodes (QLEDs) (490 nm) are conducted with a record external quantum efficiency of 14.6% and current efficiency of 19.9 cd A-1 . Meanwhile, the electroluminescence spectra exhibit great stability with negligible shifts under a constant operating voltage from 3 to 7 V. This strategy paves the way for improving the efficiency and stability of perovskite QLEDs.
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Affiliation(s)
- Hanwen Zhu
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Guoqing Tong
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Junchun Li
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Enze Xu
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Xuyong Tao
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Yuanyuan Sheng
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Jianxin Tang
- Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, P. R. China
| | - Yang Jiang
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
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10
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Tan CS, Yang CC. Optoelectronic Properties Prediction of Lead-Free Methylammonium Alkaline-Earth Perovskite Based on DFT Calculations. ACS OMEGA 2022; 7:16204-16210. [PMID: 35571785 PMCID: PMC9097191 DOI: 10.1021/acsomega.2c01695] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Accepted: 03/30/2022] [Indexed: 06/15/2023]
Abstract
Dynamical stability plays an essential role in phase transition and structure, and it could be a fundamental method of discovering new lead-free perovskite materials. The perovskite materials are well-known for their excellent optoelectronic properties, but the lead element inside could be a hindrance to future development. This research is trying to predict the promising cation candidates in the high-temperature application for lead-free perovskite materials from the replacement of lead in MAPbCl3 (MA = methylammonium) with alkaline-earth cations. The alkaline-earth cations are of a stable positive divalent sort, which is the same as Pb, and most of them are abundant in nature. Therefore, by improving the dynamical stability, the Mg2+, Ca2+, and Sr2+ cations replacement of lead ions could stabilize the perovskite structure by decreasing the imaginary part of phonon density of states. Finally, the density functional theory results show that the MACaCl3 could be a dynamic stable lead-free methylammonium perovskite material with an ultrawide band gap (5.96 eV).
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Li J, Guo Z, Xiao S, Tu Y, He T, Zhang W. Enhanced Performance of Two-Photon Excited Amplified Spontaneous Emission by Cd-Alloyed CsPbBr 3 Nanocrystals. Inorg Chem 2022; 61:4735-4742. [PMID: 35266707 DOI: 10.1021/acs.inorgchem.2c00077] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
It has been demonstrated that the alloyed perovskite nanocrystals (NCs) with a small amount of Cd element may passivate the inherent halide vacancies in perovskite NCs and improve their stability. However, the study of the optical properties of such alloyed perovskite NCs still remains essentially untouched, which will seriously hinder relevant applications. Herein, using different amounts of CdBr2 as an alloyed metal precursor, a series of CsPbxCd1-xBr3 NCs (x = 1, 0.93, and 0.88) were synthesized. Compared with bare CsPbBr3 NCs, the Cd-alloyed NCs exhibited a near-unity photoluminescence quantum yield (99%), efficiently improved stability, and enhanced electron-phonon coupling strength. As the Cd-alloyed amount was increased, their hot-carrier cooling time became faster and the exciton-biexciton interaction decreased, causing a decreased threshold of two-photon excited amplified spontaneous emission (ASE) from 1.58 to 1.23 mJ cm-2. In addition, the Cd-alloying method can also improve the photostability of ASE, resulting in the initial ASE intensity remaining at 90% even after 7.5 × 105 pulse shots. This work implies that the Cd-alloyed CsPbBr3 NCs will be promising for application in a laser gain medium.
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Affiliation(s)
- Junzi Li
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Zhihang Guo
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Shuyu Xiao
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Yudi Tu
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Tingchao He
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
| | - Wenjing Zhang
- International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education, Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
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Cheng X, Xie Z, Zheng W, Li R, Deng Z, Tu D, Shang X, Xu J, Gong Z, Li X, Chen X. Boosting the Self-Trapped Exciton Emission in Alloyed Cs 2 (Ag/Na)InCl 6 Double Perovskite via Cu + Doping. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103724. [PMID: 35037421 PMCID: PMC8895137 DOI: 10.1002/advs.202103724] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/05/2021] [Indexed: 05/21/2023]
Abstract
Fundamental understanding of the effect of doping on the optical properties of 3D double perovskites (DPs) especially the dynamics of self-trapped excitons (STEs) is of vital importance for their optoelectronic applications. Herein, a unique strategy via Cu+ doping to achieve efficient STE emission in the alloyed lead-free Cs2 (Ag/Na)InCl6 DPs is reported. A small amount (1.0 mol%) of Cu+ doping results in boosted STE emission in the crystals, with photoluminescence (PL) quantum yield increasing from 19.0% to 62.6% and excitation band shifting from 310 to 365 nm. Temperature-dependent PL and femtosecond transient absorption spectroscopies reveal that the remarkable PL enhancement originates from the increased radiative recombination rate and density of STEs, as a result of symmetry breakdown of the STE wavefunction at the octahedral Ag+ site. These findings provide deep insights into the STE dynamics in Cu+ -doped Cs2 (Ag/Na)InCl6 , thereby laying a foundation for the future design of new lead-free DPs with efficient STE emission.
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Affiliation(s)
- Xingwen Cheng
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
| | - Zhi Xie
- College of Mechanical and Electronic EngineeringFujian Agriculture and Forestry UniversityFuzhouFujian350002China
| | - Wei Zheng
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Renfu Li
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Zhonghua Deng
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
| | - Datao Tu
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Xiaoying Shang
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
| | - Jin Xu
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Zhongliang Gong
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
| | - Xingjun Li
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
| | - Xueyuan Chen
- CAS Key Laboratory of Design and Assembly of Functional NanostructuresFujian Key Laboratory of Nanomaterials and State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhouFujian350002China
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of ChinaFuzhouFujian350108China
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Wang X, Bai T, Yang B, Zhang R, Zheng D, Jiang J, Tao S, Liu F, Han KL. Germanium Halides Serving as Ideal Precursors: Designing a More Effective and Less Toxic Route to High-Optoelectronic-Quality Metal Halide Perovskite Nanocrystals. NANO LETTERS 2022; 22:636-643. [PMID: 35019656 DOI: 10.1021/acs.nanolett.1c03527] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The three-precursors approach has proven to be advantageous for obtaining high-quality metal halide perovskite nanocrystals (PNCs). However, the current halide precursors of choice are mainly limited to those highly toxic organohalides, being unfavorable for large-scale and sustainable use. Moreover, most of the resulting PNCs still suffer from low quality in terms of photoluminescence quantum yield (PLQY). Herein we present all-inorganic germanium salts, GeX4 (X = Cl, Br, I), serving as robust and less hazardous alternatives that are capable of ensuring improved material properties for both Pb-based and Pb-free PNCs. Importantly, unlike most of the other inorganic halide sources, the GeX4 compound does not deliver the Ge element into the final compositions, whereas the PLQY and phase stability of the resulting nanocrystals are significantly improved. Theoretical calculations suggest that Ge halide precursors provide favorable conditions in both dielectric environment and thermodynamics, which jointly contribute to the formation of size-confined defect-suppressed nanoparticles.
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Affiliation(s)
- Xiaochen Wang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China
| | - Tianxin Bai
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China
| | - Bin Yang
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
| | - Ruiling Zhang
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China
| | - Daoyuan Zheng
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China
| | - Junke Jiang
- Materials Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
- Center for Computational Energy Research, Department of Applied Physics, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
| | - Shuxia Tao
- Materials Simulation and Modelling, Department of Applied Physics, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
- Center for Computational Energy Research, Department of Applied Physics, Eindhoven University of Technology, Eindhoven 5600 MB, The Netherlands
| | - Feng Liu
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China
| | - Ke-Li Han
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Science, Shandong University, Qingdao 266237, People's Republic of China
- State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian 116023, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100039, People's Republic of China
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14
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Tan CS. Transition Metal Ions in Methylammonium Chloride Perovskites. ACS OMEGA 2022; 7:1412-1419. [PMID: 35036802 PMCID: PMC8756579 DOI: 10.1021/acsomega.1c06088] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 12/14/2021] [Indexed: 06/14/2023]
Abstract
Organic-inorganic perovskite materials have become star materials for future wide band gap optoelectronics due to their excellent optical and electrical properties. However, the lead ions inside perovskites have become a crucial environmental issue in the commercialization of wide band gap perovskite devices . This research tries to find the structure and properties of lead-free perovskite materials by screening Sn2+ and transition-metal ions to replace Pb2+ within the methylammonium (MA)-based chloride perovskite and find out a new two-dimensional structure of MA-based transition-metal ion chlorides. Overall, MAZnCl3 may be a potential ultraviolet-C luminescent material with a stable two-dimensional structure with a wide band gap of 5.64 eV, which is suitable for ultraviolet-C luminescence applications.
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Affiliation(s)
- Chih Shan Tan
- Institute of Electronics, National
Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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15
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Li Y, Liu Q, Liu X, Feng J, He L, Li H, Li C, Zhang H. Simultaneous Enhancement of Photoluminescence and Stability of CsPbCl 3 Perovskite Enabled by Titanium Ion Dopant. J Phys Chem Lett 2021; 12:10746-10752. [PMID: 34714073 DOI: 10.1021/acs.jpclett.1c03057] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The application of CsPbCl3 perovskite is limited by the low photoluminescence quantum yield (PLQY), weak luminescence, and unpromising stability. Doping impurity ions has been considered as an effective strategy to tune the optoelectronic performances of perovskite. In this work, heterovalent Ti3+ ions are successfully doped into CsPbCl3 nanocrystals. It is found that Ti3+ ion doping could effectively improve the photoluminescence (PL) performance of CsPbCl3 nanocrystals. Density functional theory (DFT) calculations reveal that Ti3+ ions could introduce more band-edge states around the conduction band minimum of CsPbCl3, which is conducive to release electrons into conduction band. Furthermore, Ti3+ ion doping could inhibit the Cl vacancy concentration in CsPbCl3 and prevent the in-gap state caused by Cl vacancy. Notably, the stability of CsPbCl3 perovskite is greatly improved through Ti3+ ion doping. This work provides a new perspective for improving the optoelectronic properties of all-inorganic perovskites through heterovalent metal ion doping.
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Affiliation(s)
- Yao Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Qingshi Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Xiaojuan Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Jing Feng
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Lingjun He
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Huwei Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
| | - Chengyu Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
| | - Hongjie Zhang
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun 130022, China
- University of Science and Technology of China, Hefei 230026, China
- Department of Chemistry, Tsinghua University, Beijing 100084, China
- The GBA National Institute for Nanotechnology Innovation, Guangzhou 510700, China
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16
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Wang LM, Chen JK, Zhang BB, Liu Q, Zhou Y, Shu J, Wang Z, Shirahata N, Song B, Mohammed OF, Bakr OM, Sun HT. Phosphatidylcholine-mediated regulation of growth kinetics for colloidal synthesis of cesium tin halide nanocrystals. NANOSCALE 2021; 13:16726-16733. [PMID: 34596199 DOI: 10.1039/d1nr04618g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Cesium tin halide (CsSnX3, where X is halogen) perovskite nanocrystals (NCs) are one of the most representative alternatives to their lead-based cousins. However, a fundamental understanding of how to regulate the growth kinetics of colloidal CsSnX3 NCs is still lacking and, specifically, the role of surfactants in affecting their growth kinetics remains incompletely understood. Here we report a general approach for colloidal synthesis of CsSnX3 perovskite NCs through a judicious combination of capping agents. We demonstrate that introducing a small amount of zwitterionic phosphatidylcholine in the reaction is of vital importance for regulating the growth kinetics of CsSnX3 NCs, which otherwise merely leads to the formation of large-sized powders. Based on a range of experimental characterization, we propose that the formation of intermediate complexes between zwitterionic phosphatidylcholine and the precursors and the steric hindrance effect of branched fatty acid side-chains of phosphatidylcholine can regulate the growth kinetics of CsSnX3, which enables us to obtain CsSnX3 NCs with emission quantum yields among the highest values ever reported. Our finding of using zwitterionic capping agents to regulate the growth kinetics may inspire more research on the synthesis of high-quality tin-based perovskite NCs that could speed up their practical applications in optoelectronic devices.
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Affiliation(s)
- Lu-Ming Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jia-Kai Chen
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan.
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0814, Japan
| | - Bin-Bin Zhang
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan.
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0814, Japan
| | - Qi Liu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yang Zhou
- Advanced Membranes and Porous Materials Center (AMPMC) & KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Jie Shu
- Analysis and Testing Center, Soochow University, Suzhou 215123, China
| | - Zuoshan Wang
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Naoto Shirahata
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan.
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0814, Japan
| | - Bo Song
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Omar F Mohammed
- Advanced Membranes and Porous Materials Center (AMPMC) & KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Osman M Bakr
- Advanced Membranes and Porous Materials Center (AMPMC) & KAUST Catalysis Center (KCC), Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Hong-Tao Sun
- International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba 305-0047, Japan.
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