材料科学
佩多:嘘
钝化
钙钛矿(结构)
光伏
三苯胺
纳米技术
化学工程
热稳定性
化学物理
光电子学
图层(电子)
光伏系统
工程类
物理
生物
生态学
作者
Chintam Hanmandlu,Rohan Paste,Hsinhan Tsai,Shyam Narayan Singh Yadav,Kuan-Wen Lai,Yen‐Yu Wang,Chandra Shekar Gantepogu,Chen-Hung Hou,Jing‐Jong Shyue,Yunxiang Lu,Tushar Sanjay Jadhav,Jian-Ming Liao,Hsien-Hsin Chou,Hui Qi Wong,Ta-Jen Yen,Chao‐Sung Lai,Dibyajyoti Ghosh,Sergei Tretiak,Hung‐Ju Yen,Chih‐Wei Chu
出处
期刊:Nano Energy
[Elsevier]
日期:2023-03-01
卷期号:107: 108136-108136
被引量:2
标识
DOI:10.1016/j.nanoen.2022.108136
摘要
Decreasing the number of interfacial defect states and enhancing the charge transfer ability of charge transport layers have become promising strategies for increasing the efficiency and stability of perovskite solar cells (PSCs). In this study, we used a holistic interface strategy, employing three-dimensional (3D) triphenylamine-based nanographene (NG) precursors with well-defined molecular structures and presenting various functional units (F, Br, and OMe), to achieve efficient inverted PSCs. The 3D NG precursor formed a bridge between the perovskite film and the poly(3,4-ethylenedioxythiophene):polystyrenesulfonate (PEDOT:PSS) hole transport layer (HTL) with minimized interfacial defect states, while also passivating defect states at the bulk perovskite through automatic bottom-up passivation. Computational simulations and experimental findings revealed that the functional groups of the 3D NG precursors anchored the perovskites through the formation of strong F···Pb, Br···Pb, and OMe···Pb coordination bonds. Through these synergetic properties, inverted PSCs delivered great enhancements in their photovoltaics performance characteristics, with the improvement in absolute efficiency exceeding 3 %. This new practical approach toward interfacial engineering of inverted PSCs appears to enhance their PCEs and thermal, light soaking, and long term stabilities.
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