Synthesis and Optimization of Cs2B′B″X6 Double Perovskite for Efficient and Sustainable Solar Cells
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Published:2023-09-13
Issue:18
Volume:28
Page:6601
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ISSN:1420-3049
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Container-title:Molecules
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language:en
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Short-container-title:Molecules
Author:
Yao Ruijia1,
Zhou Tingxue1,
Ji Shilei1,
Liu Wei1,
Li Xing’ao12
Affiliation:
1. New Energy Technology Engineering Laboratory of Jiangsu Province, Institute of Advanced Materials, School of Science, Nanjing University of Posts and Telecommunications (NJUPT), Nanjing 210023, China
2. School of Science, Zhejiang University of Science and Technology (ZUST), Hangzhou 310023, China
Abstract
Hybrid perovskite materials with high light absorption coefficients, long diffusion lengths, and high mobility have attracted much attention, but their commercial development has been seriously hindered by two major problems: instability and lead toxicity. This has led to lead-free halide double perovskite becoming a prominent competitor in the photovoltaic field. For lead-free double perovskites, Pb2+ can be heterovalent, substituted by non-toxic metal cations as a double perovskite structure, which promotes the flexibility of the composition. However, the four component elements and low solubility in the solvent result in synthesis difficulties and phase impurity problems. And material phase purity and film quality are closely related to the number of defects, which can limit the photoelectric performance of solar cells. Therefore, based on this point, we summarize the synthesis methods of Cs2B′B″X6 double perovskite crystals and thin films. Moreover, in the application of solar cells, the existing research mainly focuses on the formation process of thin films, band gap adjustment, and surface engineering to improve the quality of films and optimize the performance of devices. Finally, we propose that Cs2B′B″X6 lead-free perovskites offer a promising pathway toward developing highly efficient and stable perovskite solar cells.
Funder
Ministry of Education of China
National Natural Science Foundation of China
China Postdoctoral Science Foundation
Priority Academic Program Development of Jiangsu Higher Education Institutions
Natural Science Research Project of Jiangsu Universities
Natural Science Foundation of Nanjing University of Posts and Telecommunications
Subject
Chemistry (miscellaneous),Analytical Chemistry,Organic Chemistry,Physical and Theoretical Chemistry,Molecular Medicine,Drug Discovery,Pharmaceutical Science