Strategies for Improving the Stability of Tin‐Based Perovskite (ASnX3) Solar Cells

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...

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Bibliographic Details
Published in:Advanced science 2020-05, Vol.7 (10), p.1903540-n/a
Main Authors: Yao, Huanhuan, Zhou, Faguang, Li, Zhizai, Ci, Zhipeng, Ding, Liming, Jin, Zhiwen
Format: Article
Language:English
Subjects:
Copyright
Crystal structure
Efficiency
instability
Methods
oxidation
perovskite solar cells (PSCs)
photovoltaic
Review
Reviews
Tin
tin‐based perovskites
toxicity
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Summary: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. Nontoxic tin‐based perovskite solar cells (PSCs) have attracted attention, but are easily oxidized, which causes their performance and stability to be far behind lead‐based PSCs. Here, strategies to improve the stability of tin‐based PSCs (additive engineering, deoxidizer, partial substitution, and reduced dimensions) are reviewed. Outlooks are also proposed to avoid the shortcoming for fabricating highly efficient and stable PSCs.
ISSN:2198-3844
2198-3844
DOI:10.1002/advs.201903540