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Glycol Monomethyl Ether‐Substituted Carbazolyl Hole‐Transporting Material for Stable Inverted Perovskite Solar Cells with Efficiency of 25.52 %.

Authors :
Zhou, Hui
Wang, Weilin
Duan, Yuwei
Sun, Rui
Li, Yong
Xie, Zhuang
Xu, Dongfang
Wu, Meizi
Wang, Youliang
Li, Hongxiang
Fan, Qunping
Peng, Yang
Yao, Yao
Liao, Chentong
Peng, Qiang
Liu, Shengzhong
Liu, Zhike
Source :
Angewandte Chemie; 8/12/2024, Vol. 136 Issue 33, p1-11, 11p
Publication Year :
2024

Abstract

Organic self‐assembled molecules (OSAMs) based hole‐transporting materials play a pivotal role in achieving highly efficient and stable inverted perovskite solar cells (IPSCs). However, the reported carbazol‐based OSAMs have serious drawbacks, such as poor wettability for perovskite solution spreading due to the nonpolar surface, worse matched energy arrangement with perovskite, and limited molecular species, which greatly limit the device performance. To address above problems, a novel OSAM [4‐(3,6‐glycol monomethyl ether‐9H‐carbazol‐9‐yl) butyl]phosphonic acid (GM‐4PACz) was synthesized as hole‐transporting material by introducing glycol monomethyl ether (GM) side chains at carbazolyl unit. GM groups enhance the surface energy of Indium Tin Oxide (ITO)/SAM substrate to facilitate the nucleation and growth of up perovskite film, suppress cation defects, release the residual stress at SAM/perovskite interface, and evaluate energy level for matching with perovskite. Consequently, the GM‐4PACz based IPSC achieves a champion PCE of 25.52 %, a respectable open‐circuit voltage (VOC) of 1.21 V, a high stability, possessing 93.29 % and 91.75 % of their initial efficiency after aging in air for 2000 h or tracking at maximum power point for 1000 h, respectively. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00448249
Volume :
136
Issue :
33
Database :
Complementary Index
Journal :
Angewandte Chemie
Publication Type :
Academic Journal
Accession number :
178834951
Full Text :
https://doi.org/10.1002/ange.202403068