钝化
钙钛矿(结构)
材料科学
离子
晶界
磁滞
纳米技术
能量转换效率
化学工程
化学物理
工程物理
光电子学
化学
冶金
微观结构
工程类
物理
有机化学
图层(电子)
量子力学
作者
Weike Zhu,Shurong Wang,Xin Zhang,Aili Wang,Cheng Wu,Feng Hao
出处
期刊:Small
[Wiley]
日期:2022-01-17
卷期号:18 (15)
被引量:52
标识
DOI:10.1002/smll.202105783
摘要
Organic-inorganic hybrid perovskite (OIHPs) solar cells are the most promising alternatives to traditional silicon solar cells, with a certified power conversion efficiency beyond 25%. However, the poor stability of OHIPs is one of the thorniest obstacles that hinder its commercial development. Among all the factors affecting stability, ion migration is prominent because it is unavoidable and intrinsic in OHIPs. Therefore, it is important to understand the mechanism for ion migration and regulation strategies. Herein, the types of ions that may migrate in OHIPs are first discussed; afterward, the migrating channels are demonstrated. The effects of ion migration are further elaborated. While ion migration can facilitate the p-i-n structure in some cases, the current hysteresis and other adverse effects such as phase segregation in OHIPs attract widespread attention. Based on these, several recent strategies to suppress the ion migration are enumerated, including the introduction of alkali cations, organic additives, grain boundaries passivation, and employment of low-dimensional perovskites. Finally, the prospect for further modulating the ion migration and more stable perovskite solar cells is proposed.
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