材料科学
钙钛矿(结构)
掺杂剂
活动层
能量转换效率
光伏
降级(电信)
光电子学
纳米技术
图层(电子)
光伏系统
兴奋剂
化学工程
计算机科学
电气工程
薄膜晶体管
工程类
电信
作者
Jing Wei,Qiuwen Wang,Jiangding Huo,Feng Gao,Zhenyu Gan,Qing Zhao,Hongbo Li
标识
DOI:10.1002/aenm.202002326
摘要
Abstract Solar cells based on metal halide perovskites have reached a power conversion efficiency as high as 25%. Their booming efficiency, feasible processability, and good compatibility with large‐scale deposition techniques make perovskite solar cells (PSCs) desirable candidates for next‐generation photovoltaic devices. Despite these advantages, the lifespans of solar cells are far below the industry‐needed 25 years. In fact, numerous PSCs throughout the literature show severely hampered stability under illumination. Herein, several photoinduced degradation mechanisms are discussed. With light radiation, the organic–inorgainc perovskites are prone to phase segregation or chemical decomposition; the oxide electron transport layers (ETLs) tend to introduce new defects at the interface; the commonly used small molecules‐based hole transport layers (HTLs) typically suffer from poor photostability and dopant diffusion during device operation. It has been demonstrated the photoinduced degradation can take place in every functional layer, including the active layer, ETL, HTL, and their interfaces. An overview of these degradation categories is provided in this review, in the hope of encouraging further research and optimization of relevant devices.
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