Hole-Transporting Materials with Rational Combination of Pyridine and Dibenzo[a,c]phenazine as Electron Acceptor for Dopant-Free Perovskite Solar Cells  

作　　者：Weidong Ling Fei Wu Wentao Yuan Linna Zhu Qianqian Li Zhen Li 

机构地区：[1]Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials,Department of Chemistry,Wuhan University,Wuhan,Hubei 430072,China [2]Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy,Faculty of Materials&Energy,Southwest University,Chongqing400715,China [3]TaiKang Center for Life and Medical Sciences,Wuhan University,Wuhan,Hubei 430072,China

出　　处：《Chinese Journal of Chemistry》2024年第10期1100-1106,共7页中国化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(51973162,22235006,and 22122504);Foundation of Hubei Scientific Committee(2022BAA015,2022EHB010);the Fundamental Research Funds for the Central Universities(2042020kf2058);the Knowledge Innovation Projectof Wuhan City(whkxjsjo14).

摘　　要：Perovskite solar cells(PSCs)have been proven to be a promising option for photovoltaic conversion.With the aim to achieve efficient and stable PSCs,it is essential to explore dopant-free hole-transporting materials(HTMs)with high hole mobility.Herein,HTMs bearing electron donor(D)-electron acceptor(A)-electron donor(D)structures have been constructed with strong intramolecular charge transfer(ICT)effect,based on rational combination of dibenzo[a,c]phenazine and pyridine as electronic acceptors and anchoring groups to perovskite layer.Accordingly,high hole mobility(7.31×10^(-5) cm^(2)·V^(-1)·s^(-1))and photoelectric conversion efficiency(20.45%)have been achieved by dopant-free DPyP-based PSC.It afforded an efficient way to design HTMs with high hole mobility by adjustment of molecular configurations and electronic property of conjugated systems.

关 键 词：Perovskite solar cell Charge transfer Donor-acceptor systems Energy conversion Hole mobility 

分 类 号：O62[理学—有机化学]