材料科学
钙钛矿(结构)
铜
叶绿素
接口(物质)
钠
光电子学
无机化学
化学工程
冶金
复合材料
有机化学
化学
叶绿素
毛细管数
毛细管作用
工程类
作者
Hua Tian,Xiaoqing Jiang,Xiaotao Liu,Fengke Sun,Xin Guo,Can Li
出处
期刊:Nano Energy
[Elsevier]
日期:2024-04-01
卷期号:: 109616-109616
标识
DOI:10.1016/j.nanoen.2024.109616
摘要
Defects at the buried interface and poor contact between the hole transport layer (HTL) poly-triarylamines (PTAA) and the perovskite layer are key issues affecting the efficiency and long-term stability of inverted perovskite solar cells (PSCs). In this study, we introduce sodium copper chlorophyllin (SCC, a chlorophyll derivative) as a modification agent at the HTL/perovskite interface to address these issues. Attributed to hydrophilic carboxylate groups of SCC, the wettability of the PTAA film is enhanced, facilitating the formation of the high-quality perovskite film. Meanwhile, SCC can interact with uncoordinated Pb2+ to passivate defects of the perovskite film at the buried interface. As a result, the power conversion efficiency (PCE) of inverted PSCs with the SCC modification reaches to 22.37% (from 20.58%) based on MAPbI3, and to 24.06% (from 21.54%) based on FAPbI3, respectively. Moreover, the devices show excellent stability in air and under light irradiation. This work indicates that the natural chlorophyll derivative is a promising candidate for improving the buried interface of high-performance inverted PSCs.
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