Nonfullerene Organic Solar Cells with 18.17% Efficiency Obtained Using a V2C/PEDOT:PSS Composite Hole-Transport Layer

被引:10
作者
Gu, Qun [1 ,2 ]
Wang, Jie [2 ]
Peng, Ruixiang [2 ,3 ]
Song, Wei [2 ]
Zhou, Rong [1 ,2 ]
Ge, Ziyi [2 ,3 ]
机构
[1] Ningbo Univ, Fac Informat Sci & Engn, Ningbo 315211, Peoples R China
[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Zhejiang Prov Engn Res Ctr Energy Optoelect Mat &, Ningbo 315201, Peoples R China
[3] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
基金
中国国家自然科学基金;
关键词
composite film; 2D materials (V2C); hole-transport layer; interface engineering; electrical conductivity; organic solar cells; INTERLAYER; CATHODE; FILMS;
D O I
10.1021/acsaem.2c03883
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
More efficient promotion of charge collection and transport is an essential factor to achieve high efficiency of the devices; however, the matching of energy level between the PEDOT:PSS hole-transport layer (HTL) and indium tin oxide (ITO) is not perfect, which limits the efficiency of exciton utilization. Herein, the composite HTL of V2C/PEDOT:PSS is formed using two-dimensional (2D) conducting material V2C and PEDOT:PSS, which shows a lower work function (WF) and higher conductivity than the pure PEDOT:PSS films and shows advantages to improve the Ohmic contact between the active layer and electrode. The efficiency of the devices prepared with the V2C (0.075 mg/mL)/PEDOT:PSS composite HTL based on the nonfullerene PM6:BTP-eC9 system reaches 18.17%. The enhancement in performance can be ascribed to the interaction between the functional groups of V2C and PEDOT:PSS, as well as the increase in the overall hole-transport layer conductivity. The method proposed in this study to prepare this V2C/PEDOT:PSS composite HTL improves the efficiency of organic solar cells.
引用
收藏
页码:1982 / 1988
页数:7
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