钙钛矿薄膜缺陷调控策略在太阳能电池中的应用

doi:10.15541/jim20210117

摘要/Abstract

摘要： 研究钙钛矿晶体缺陷对于推动钙钛矿太阳能电池的发展至关重要。缺陷不仅会引起大量非辐射复合, 而且会造成器件稳定性下降。为降低材料缺陷对光伏性能的影响, 有必要深入了解钙钛矿薄膜缺陷的种类及抑制方法。根据电子特性, 缺陷可分为富电子缺陷和缺电子缺陷。利用Lewis酸碱理论, 富电子缺陷可以被Lewis酸钝化, 而缺电子缺陷可以被Lewis碱或离子液体钝化。这些钝化功能添加剂可在钙钛矿成膜过程中加入, 或对薄膜表面进行后处理。本文通过总结近年报道的缺陷钝化案例, 直观地呈现了添加剂的设计策略及缺陷钝化对光伏性能的影响,最后, 提出开发多功能钝化剂、大面积钝化策略与先进电荷传输层的建议, 期望为钙钛矿太阳能电池的发展提供助力。

关键词: 钙钛矿薄膜, 缺陷, 钝化, 太阳能电池, 综述

Abstract: The investigation of defects in perovskite crystals is essential to promote the development of perovskite solar cells. The defects result in non-radiative recombination as well as the deterioration of device stability. To reduce the impact of material defects on photovoltaic performance, it is necessary to deeply understand the types of perovskite film defects and the routes of suppression methods. According to electronic characteristics, defects can be divided into electron-rich and electron-deficient defects. Based on Lewis acid-base theory, electron-rich defects can be passivated by Lewis acid, and electron-deficient defects can be passivated by Lewis base or ionic liquids. These passivation additives can be added during the formation of perovskite film, or used to post-treat the surface of the films. This review summarized the defect passivation cases reported in recent years to visually present design strategies of additives and the effects of defect passivation on photovoltaic performance. Finally, developing multi-functional passivators, large-area passivation strategy and advanced charge transport layer were proposed for future perspective. This review is expected to promote the development of perovskite solar cells in the future.

Key words: perovskite film, defect, passivation, solar cell, review

中图分类号:

TQ174

王万海, 周杰, 唐卫华. 钙钛矿薄膜缺陷调控策略在太阳能电池中的应用[J]. 无机材料学报, 2022, 37(2): 129-139.

WANG Wanhai, ZHOU Jie, TANG Weihua. Passivation Strategies of Perovskite Film Defects for Solar Cells[J]. Journal of Inorganic Materials, 2022, 37(2): 129-139.

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