钙钛矿(结构)
复合数
材料科学
电极
能量转换效率
光电子学
图层(电子)
电导率
光伏
纳米技术
化学工程
光伏系统
复合材料
化学
电气工程
物理化学
工程类
作者
Chaofan Jiang,Junjie Zhou,Hang Li,Liguo Tan,Minghao Li,Wolfgang Tress,Liming Ding,Michaël Grätzel,Chenyi Yi
标识
DOI:10.1007/s40820-022-00985-4
摘要
Abstract Perovskite solar cells (PSCs) have become the representatives of next generation of photovoltaics; nevertheless, their stability is insufficient for large scale deployment, particularly the reverse bias stability. Here, we propose a transparent conducting oxide (TCO) and low-cost metal composite electrode to improve the stability of PSCs without sacrificing the efficiency. The TCO can block ion migrations and chemical reactions between the metal and perovskite, while the metal greatly enhances the conductivity of the composite electrode. As a result, composite electrode-PSCs achieved a power conversion efficiency (PCE) of 23.7% (certified 23.2%) and exhibited excellent stability, maintaining 95% of the initial PCE when applying a reverse bias of 4.0 V for 60 s and over 92% of the initial PCE after 1000 h continuous light soaking. This composite electrode strategy can be extended to different combinations of TCOs and metals. It opens a new avenue for improving the stability of PSCs.
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