期刊
ADVANCED SCIENCE
卷 7, 期 10, 页码 -出版社
WILEY
DOI: 10.1002/advs.201903540
关键词
instability; oxidation; perovskite solar cells (PSCs); photovoltaic; tin; tin-based perovskites; toxicity
资金
- National Natural Science Foundation of China [51902148, 61704099, 51801088, 11664001]
- Fundamental Research Funds for the Central Universities [lzujbky-2019-88]
- Special Funding for Open and Shared Large-Scale Instruments and Equipments of Lanzhou University [LZU-GXJJ-2019C023, LZU-GXJJ-2019C019]
Although lead-based perovskite solar cells (PSCs) are highly efficient, the toxicity of lead (Pb) limits its large-scale commercialization. As such, there is an urgent need to find alternatives. Many studies have examined tin-based PSCs. However, pure tin-based perovskites are easily oxidized in the air or just in glovebox with an ultrasmall amount of oxygen. Such a characteristic makes their performance and stability less ideal compared with those of lead-based perovskites. Herein, how to address the instability of tin-based perovskites is introduced in detail. First, the crystalline structure, optical properties, and sources of instability of tin-based perovskites are summarized. Next, the preparation methods of tin-based perovskite are discussed. Then, various measures for solving the instability problem are explained using four strategies: additive engineering, deoxidizer, partial substitution, and reduced dimensions. Finally, the challenges and prospects are laid out to help researchers develop highly efficient and stable tin-based perovskites in the future.
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