Simple thiazole-centered oligothiophene donor enables 15.4% efficiency all small molecule organic solar cells

被引：45

作者：

Duan, Tainan ^{[1
]}

Chen, Qianqian ^{[1
]}

Yang, Qianguang ^{[1
]}

Hu, Dingqin ^{[1
]}

Cai, Guilong ^{[2
]}

Lu, Xinhui ^{[2
]}

Lv, Jie ^{[1
]}

Song, Hang ^{[1
]}

Zhong, Cheng ^{[3
]}

Liu, Feng ^{[4
]}

Yu, Donghong ^{[5
,6
]}

Lu, Shirong ^{[1
]}

机构：

[1] Chinese Acad Sci, Univ Chinese Acad Sci UCAS Chongqing, Chongqing Sch, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China

[2] Chinese Univ Hong Kong, Dept Phys, Hong Kong 999077, Peoples R China

[3] Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China

[4] Shanghai Jiao Tong Univ, Frontiers Sci Ctr Transformat Mol, Situ Ctr Phys Sci, Ctr Hydrogen Sci, Shanghai 200240, Peoples R China

[5] Aalborg Univ, Dept Chem & Biosci, DK-9220 Aalborg, Denmark

[6] Sino Danish Ctr Educ & Res, DK-8000 Aarhus, Denmark

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2022年 / 10卷 / 06期

基金：

中国国家自然科学基金;

关键词：

PROCESSED SMALL-MOLECULE; 3-SUBSTITUTED THIOPHENES; ELECTRON-ACCEPTORS; MORPHOLOGY; DESIGN;

D O I：

10.1039/d1ta09058e

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：

Attributed to the rapid development of benzodithiophene (BDT) centered small molecule donors, all small molecule organic solar cells (ASM-OSCs) have achieved comparable power conversion efficiencies (PCEs) (>15%) along with high reproducibility, in contrast to polymer-based OSCs. However, the difficulty and complexity of synthesizing BDT-derived donors limit their cost performance and commercial application. Distinct from the relatively high synthetic complexity that exhibited by most BDT-derived small molecule donors, oligothiophene donors are much more accessible. However, the performance of oligothiophene donors has been unsatisfactory (PCE < 12%). Here, by employing an A-pi-A'-pi-A structure, a novel thiazole-centered cost-effective oligothiophene donor Tz6T is developed. By incorporating a nonfullerene acceptor eC9-4F, Tz6T based binary ASM-OSCs achieve a milestone efficiency of 15.4% (the certified PCE is 14.8%). This PCE record not only pushes oligothiophene to the forefront of small molecule donors, but also represented one of the crest values achieved by oligothiophene donors.

引用

页码：3009 / 3017

页数：9

共 60 条

[1] Selective Hole and Electron Transport in Efficient Quaternary Blend Organic Solar Cells [J].