Oligomeric Acceptor: A "Two-in-One" Strategy to Bridge Small Molecules and Polymers for Stable Solar Devices

被引：131

作者：

Wang, Hengtao ^{[1
,2
]}

Cao, Congcong ^{[1
,2
]}

Chen, Hui ^{[1
,2
,3
]}

Lai, Hanjian ^{[1
,2
]}

Ke, Chunxian ^{[1
,2
]}

Zhu, Yulin ^{[1
,2
]}

Li, Heng ^{[1
,2
]}

He, Feng ^{[1
,2
,4
]}

机构：

[1] Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China

[2] Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China

[3] Southern Univ Sci & Technol, Acad Adv Interdisciplinary Studies, Shenzhen 518055, Peoples R China

[4] Southern Univ Sci & Technol, Guangdong Prov Key Lab Catalysis, Shenzhen 518055, Peoples R China

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2022年 / 61卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Configurational Isomers; Oligomeric Acceptors; Oligomerization; Organic Solar Cells; Stability; NON-FULLERENE ACCEPTOR; ELECTRON-ACCEPTORS; CELLS; PERFORMANCE; VOLTAGE;

D O I：

10.1002/anie.202201844

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Oligomeric acceptors are expected to combine the advantages of both highly developed small molecular and polymeric acceptors. However, organic solar cells (OSCs) based on oligomers lag far behind due to their slow development and low diversity. Here, three oligomeric acceptors were produced through oligomerization of small molecules. The dimer dBTIC gamma-EH achieved the best power conversion efficiencies (PCEs) of 14.48 % in bulk heterojunction devices and possessed a T80 (80 % of the initial PCE) lifetime of 1020 h under illumination, which were far better than that of small molecular and polymeric acceptors. More excitingly, it showed PCEs of 16.06 % in quasi-planar heterojunction (Q-PHJ) devices which is the highest value OSCs using oligomeric acceptors to date. These results suggest that oligomerization of small molecules is a promising strategy to achieve OSCs with optimized performance between the high efficiency and durable stability, and offer oligomeric materials a bright future in commercial applications.

引用

页数：10

共 53 条

[11] All-polymer solar cells with efficiency approaching 16% enabled using a dithieno[3′,2′:3,4;2′′,3′′:5,6]benzo[1,2-c][1,2,5]thiadiazole (fDTBT)-based polymer donor [J].