A High-Performance Nonfused Wide-Bandgap Acceptor for Versatile Photovoltaic Applications

被引：97

作者：

Bi, Pengqing ^{[1
]}

Zhang, Shaoqing ^{[1
,2
]}

Ren, Junzhen ^{[1
,3
]}

Chen, Zhihao ^{[4
]}

Zheng, Zhong ^{[1
,2
]}

Cui, Yong ^{[1
]}

Wang, Jianqiu ^{[1
]}

Wang, Shijie ^{[5
]}

Zhang, Tao ^{[1
,3
]}

Li, Jiayao ^{[1
,3
]}

Xu, Ye ^{[1
,3
]}

Qin, Jinzhao ^{[1
,3
]}

An, Cunbin ^{[1
]}

Ma, Wei ^{[5
]}

Hao, Xiaotao ^{[4
]}

Hou, Jianhui ^{[1
,3
]}

机构：

[1] Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Beijing Natl Lab Mol Sci CAS Res, Educ Ctr Excellence Mol Sci,Inst Chem, Beijing 100190, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Chem & Biol Engn, Beijing 100083, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Shandong, Peoples R China

[5] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China

来源：

ADVANCED MATERIALS | 2022年 / 34卷 / 05期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

indoor photovoltaics; nonfused acceptors; organic photovoltaic cells; tandem cells; wide bandgap; EXCITON DIFFUSION LENGTH; ORGANIC SOLAR-CELLS; SEMICONDUCTORS;

D O I：

10.1002/adma.202108090

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Wide-bandgap (WBG) nonfullerene acceptors (NFAs) with nonfused conjugated structures play a critical role in organic photovoltaic (OPV) cells. Here, NFAs named GS-OEH, GS-OC6, and GS-ISO, with optical bandgaps larger than 1.70 eV, are synthesized without using the fused ring structures. Compared with GS-OEH and GS-OC6, GS-ISO exhibits much stronger crystallinity, leading to a smaller energetic disorder and a larger exciton diffusion coefficient. GS-ISO also possesses a higher electroluminescence external quantum efficiency of 1.0 x 10(-2). The OPV cell based on PBDB-TF:GS-ISO demonstrates a power conversion efficiency (PCE) of 11.62% under the standard one sun illumination. Besides, the PBDB-TF:GS-ISO-based cell with effective area of 1.0 cm(2) exhibits a PCE of 28.37% under 2700 K illumination of 500 lux. A tandem OPV cell using PBDB-TF:GS-ISO as the front subcell shows an outstanding efficiency of 19.10%. Importantly, the GS-ISO-based OPV cell exhibits promising stability under the continuous illumination of simulated sunlight. This study indicates that the molecular design strategy demonstrated in this work has great superiority in developing nonfused NFAs and also that GS-ISO is a promising WBG acceptor for versatile photovoltaic applications.

引用

页数：11

共 51 条

[1] Fluorination Effects on Indacenodithienothiophene Acceptor Packing and Electronic Structure, End-Group Redistribution, and Solar Cell Photovoltaic Response [J].