The performance and stability of perovskite solar cells (PSCs) are mainly affected by various defects inside the perovskite active layer and the corresponding electron/hole interfaces of transport layers. Much progress has been made in the development of perovskite layer passivation strategies, contributing to the efficient performance of PSCs with improved ambient environment stability. This paper reviews additive engineering techniques for the passivation of the perovskite active layer that have the aim of improving perovskite crystallization, reducing carrier recombination, and improving device stability. Passivation of the active layer by various additives can improve the performance of PSCs by reducing trap states and enhancing moisture stability by reducing the grain boundaries. Optimizing the ratio of PbI 2 in the perovskite precursor has been discovered to be effective in passivating trap states at the grain boundaries and on the surface of the film. Non-radiat...

中文翻译：

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钙钛矿活性层通过添加剂工程钝化的最新进展：综述

钙钛矿太阳能电池（PSC）的性能和稳定性主要受钙钛矿活性层内部的各种缺陷以及相应的传输层电子/空穴界面的影响。钙钛矿层钝化策略的开发已经取得了很大的进步，为提高PSC的有效性能和改善周围环境的稳定性做出了贡献。本文综述了用于钙钛矿活性层钝化的添加剂工程技术，其目的是改善钙钛矿的结晶度，减少载流子的复合并提高器件的稳定性。各种添加剂对活性层的钝化可通过减少陷阱态并通过减小晶界来增强水分稳定性来提高PSC的性能。已经发现优化钙钛矿前体中PbI 2的比例可有效钝化晶界和薄膜表面的陷阱态。非辐射...