材料科学
钙钛矿(结构)
单层
对偶(语法数字)
钙钛矿太阳能电池
纳米技术
化学工程
结晶学
图层(电子)
文学类
工程类
艺术
化学
作者
Chao Zhou,Fei Wang,Xinbo Ai,Yujun Liu,Yonglei Han,Ling Han,Junsheng Wu,Kang Zhou,Hanlin Hu,Shiyu Wang,Wangting Lu,Zhuo Zhao,Yongfei Wang,Haoran Lin
出处
期刊:Nano Energy
[Elsevier]
日期:2024-05-31
卷期号:128: 109811-109811
被引量:4
标识
DOI:10.1016/j.nanoen.2024.109811
摘要
Recently, self-assembled monolayer (SAM) based inverted perovskite solar cells (PSCs) have been extensively studied due to their remarkable stability and compatibility with large-area devices. Microporesat the SAM/perovskite buried interface are commonly observed, which result in the increased defect density and hindered charge extraction. Herein, a multifunctional organic material, namely 2-(methylthio)-4,5-dihydro-1H-imidazole ammonium iodide (MTIm), is introduced as an interfacial modification material to react with the residual PbI2, forming one-dimensional (1D) (MTIm)PbI3 small grains. We found that the 1D perovskite distributes at both top and buried interfaces of PSC, achieving dual-interfacial passivation of defects. Moreover, the 1D perovskite leads to a favorable n-type doping at the top interface, and relaxes the lattice strain at the buried interface. As a result, the champion PSC device achieves significantly improved power conversion efficiency from 21.7% to 23.8%, and retains over 90% of its initial PCE after storing in air for 1500 hours.
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