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

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Origins and Suppression of Sn(II)/Sn(IV) Oxidation in Tin Halide Perovskite Solar Cells
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2023-05-01 , DOI: 10.1002/aenm.202300696
Junke Liu ₁ , Huanhuan Yao ₁ , Shurong Wang ₁ , Cheng Wu ₁ , Liming Ding ₂ , Feng Hao ₁

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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.

中文翻译：

卤化锡钙钛矿太阳能电池中 Sn(II)/Sn(IV) 氧化的起源和抑制

与卤化铅相比，卤化锡钙钛矿太阳能电池 (TPSC) 因其生态友好性而吸引了对新兴钙钛矿光伏器件的积极研究兴趣。然而，锡钙钛矿容易被 Sn(II)/Sn(IV) 氧化，严重阻碍了 TPSC 的发展。因此，清楚地了解氧化的机制、起源和影响对于进一步提高 TPSC 的性能和稳定性至关重要。在此，系统概述了 TPSC 中从起始前体到最终器件的 Sn(II)/Sn(IV) 氧化的物理化学过程。此外，然后从晶体结构、缺陷化学和光电特性方面回顾了氧化对 TPSC 性能的影响。更重要的是，在已报道的抗氧化策略的基础上，认真讨论了抑制Sn(II)/Sn(IV)氧化的关键问题。最后，提出了具有更高功率转换效率和稳定性的 TPSC 面临的挑战和展望。

更新日期：2023-05-01

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