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Gull S, Jamil MH, Zhang X, Kwok HS, Li G. Stokes Shift in Inorganic Lead Halide Perovskites: Current Status and Perspective. Chemistry 2022; 11:e202100285. [PMID: 35147296 PMCID: PMC8889505 DOI: 10.1002/open.202100285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 12/18/2021] [Indexed: 11/08/2022]
Abstract
Inorganic metal halide perovskite system is considered as a promising candidate for applications from display to biomedical industry. Intrinsic inorganic lead halides possess small Stokes shift or self-absorption, providing negative impact for both photo voltaic and biomedical applications. Therefore, the development of an inorganic halide perovskite system with large Stokes shift is a significant venture. This review aims to provide an updated survey of the Stokes shift phenomena in the inorganic lead halide perovskites. The first section focuses about the mechanism, the second section gives different approaches in preparing inorganic perovskites with distinct Stokes shift, while the third section highlights the potential applications in both photovoltaic and biomedical areas. This review provides deep insight about the importance and usefulness of such phenomena in inorganic lead halides, essential for various applications.
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Affiliation(s)
- Sehrish Gull
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - M Haris Jamil
- College of Electronics and Electrical Engineering, Shenzhen University, Shenzhen, China
| | - Xiuwen Zhang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
| | - Hoi-Sing Kwok
- State Key Lab of Advanced Displays and Optoelectronics Technologies, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong
| | - Guijun Li
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, China
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Zhu J, He B, Yao X, Chen H, Duan Y, Duan J, Tang Q. Phase Control of Cs-Pb-Br Derivatives to Suppress 0D Cs 4 PbBr 6 for High-Efficiency and Stable All-Inorganic CsPbBr 3 Perovskite Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2106323. [PMID: 34898006 DOI: 10.1002/smll.202106323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 11/11/2021] [Indexed: 06/14/2023]
Abstract
The precise phase control of Cs-Pb-Br derivatives from 3D CsPbBr3 to 0D Cs4 PbBr6 highly determines the photovoltaic performance of all-inorganic CsPbBr3 perovskite solar cells (PSCs). Herein, the preferred phase conversion from precursor to Cs-Pb-Br derivatives is revealed by theoretically calculating the Gibbs free energies (∆G) of various phase conversion processes, allowing for a simplified multi-step solution-processable spin-coating method to hinder the formation of detrimental 0D Cs4 PbBr6 phase and enhance the photovoltaic performance of a PSC because of its large exciton binding energy, which is regarded as a recombination center. By further accelerating the interfacial charge extraction with a novel 2D transition metal dichalcogenide ReSe2 , the hole-free CsPbBr3 PSC achieves a champion efficiency of 10.67% with an impressive open-circuit voltage of 1.622 V and an excellent long-term stability. This work provides an in-depth understanding on the precise Cs-Pb-Br perovskite phase control and the effect of derivatives on photovoltaic performance of advanced CsPbBr3 PSCs.
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Affiliation(s)
- Jingwei Zhu
- School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, P. R. China
| | - Benlin He
- School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, P. R. China
| | - Xinpeng Yao
- School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, P. R. China
| | - Haiyan Chen
- School of Materials Science and Engineering, Ocean University of China, 238 Songling Road, Qingdao, 266100, P. R. China
| | - Yanyan Duan
- State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM), School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, P. R. China
| | - Jialong Duan
- College of Information Science and Technology, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, P. R. China
| | - Qunwei Tang
- College of Information Science and Technology, Jinan University, 601 Huangpu Avenue West, Guangzhou, 510632, P. R. China
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