Origins and Suppression of Sn(II)/Sn(IV) Oxidation in Tin Halide Perovskite Solar Cells

Tin halide perovskite solar cells (TPSCs) have attracted aggressive research interest in the emerging perovskite photovoltaic devices due to their eco‐friendliness as compared to their lead halide counterparts. However, the easy Sn(II)/Sn(IV) oxidation of tin perovskites is a serious impediment to t...

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Bibliographic Details
Published in:Advanced energy materials 2023-06, Vol.13 (23), p.n/a
Main Authors: Liu, Junke, Yao, Huanhuan, Wang, Shurong, Wu, Cheng, Ding, Liming, Hao, Feng
Format: Article
Language:English
Subjects:
antioxidation
Crystal defects
Crystal structure
current loss
energy band matching
Energy conversion efficiency
Lead compounds
Metal halides
Optoelectronics
Origins
Oxidation
Perovskites
Photovoltaic cells
p‐type self‐doping
Solar cells
Stability
Tin
voltage loss
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Summary:Tin halide perovskite solar cells (TPSCs) have attracted aggressive research interest in the emerging perovskite photovoltaic devices due to their eco‐friendliness as compared to their lead halide counterparts. However, the easy Sn(II)/Sn(IV) oxidation of tin perovskites is a serious impediment to the development of TPSCs. Therefore, a clear understanding of the mechanisms, origins, and effects of the oxidation is essential to further boost the performance and stability of TPSCs. Herein, a systematic overview of the physicochemical process for the Sn(II)/Sn(IV) oxidation in TPSCs from the starting precursors to the final devices is presented. In addition, the effects of oxidation on the performance of TPSCs are then reviewed from crystal structure, defect chemistry, and optoelectronic properties. More importantly, the key issues to suppress the Sn(II)/Sn(IV) oxidation are seriously discussed on the basis of the reported antioxidation strategies. Finally, the challenges and outlooks toward TPSCs with higher power conversion efficiency and stability are proposed. This review summarizes and discusses the physicochemical origins, effects, and suppressing strategies of Sn(II)/Sn(IV) oxidation from the starting raw materials to the final tin perovskite solar cells (TPSCs). On this basis, the key point of antioxidation as well as challenges and opportunities are discussed for building up TPSCs with better stability and efficiency in the future.
ISSN:1614-6832
1614-6840
DOI:10.1002/aenm.202300696