Dimethyl acridine-based self-assembled monolayer as a hole transport layer for highly efficient inverted perovskite solar cells  

作　　者：Liufei Li Rongyao Lv Guiqi Zhang Bing Cai Xin Yu Yandong Wang Shantao Zhang Xiaofen Jiang Xinyu Li Shuang Gao Xue Wang Ziqi Hu Wen-Hua Zhang Shangfeng Yang 

机构地区：[1]Yunnan Key Laboratory of Carbon Neutrality and Green Low-carbon Technologies,Yunnan Key Laboratory for Micro/Nano Materials&Technology,School of Materials and Energy,Yunnan University,Kunming 650504,China [2]Key Laboratory of Precision and Intelligent Chemistry,Collaborative Innovation Center of Chemistry for Energy Materials(iChEM),School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,China [3]Southwest United Graduate School,Kunming 650092,China

出　　处：《Energy Materials and Devices》2024年第2期29-38,共10页能源材料与器件（英文）

基　　金：National Natural Science Foundation of China(Grant Nos.51925206,52302052);the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDB0450301);Yunnan Provincial Science and Technology Project at Southwest United Graduate School(Grant No.202302AO370013);Huacai Solar Co.,Ltd.

摘　　要：Self-assembled monolayers(SAMs)have recently emerged as excellent hole transport materials in inverted perovskite solar cells(PSCs)owing to their ability to minimize parasitic absorption,regulate energy level alignment,and passivate perovskite defects.Herein,we design and synthesize a novel dimethyl acridinebased SAM,[2-(9,10-dihydro-9,9-dimethylacridine-10-yl)ethyl]phosphonic acid(2PADmA),and employ it as a hole-transporting layer in inverted PSCs.Experimental results show that the 2PADmA SAM can modulate perovskite crystallization,facilitate carrier transport,passivate perovskite defects,and reduce nonradiative recombination.Consequently,the 2PADmA-based device achieves an enhanced power conversion efficiency(PCE)of 24.01%and an improved fill factor(FF)of 83.92%compared to the commonly reported[2-(9H-carbazol-9-yl)ethyl]phosphonic acid(2PACz)-based control device with a PCE of 22.32%and FF of 78.42%,while both devices exhibit comparable open-circuit voltage and short-circuit current density.In addition,2PADmA-based devices exhibit outstanding dark storage and thermal stabilities,retaining approximately~98%and 87%of their initial PCEs after 1080 h of dark storage and 400 h of heating at 85°C,respectively,both considerably superior to the control device.

关 键 词：perovskite solar cells hole transport layer self-assembled monolayer power conversion efficiency stability 

分 类 号：O62[理学—有机化学]