Thermally stable high performance non-fullerene polymer solar cells with low energy loss by using ladder-type small molecule acceptors

被引：45

作者：

Li, Qing-Ya ^{[1
]}

Xiao, Jingyang ^{[2
]}

Tang, Lu-Ming ^{[1
]}

Wang, Hua-Chun ^{[1
]}

Chen, Ziming ^{[2
]}

Yang, Zhiyong ^{[3
]}

Yip, Hin-Lap ^{[2
]}

Xu, Yun-Xiang ^{[1
]}

机构：

[1] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

[2] South China Univ Technol, Sch Mat Sci & Engn, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China

[3] Sun Yat Sen Univ, Sch Chem & Chem Engn, 135 Rd Xingangxi, Guangzhou 510275, Guangdong, Peoples R China

来源：

ORGANIC ELECTRONICS | 2017年 / 44卷

基金：

中国国家自然科学基金;

关键词：

Thermal stability; Non-fullerene; Polymer solar cells; Low energy loss; Ladder-type; OPEN-CIRCUIT VOLTAGE; ORGANIC PHOTOVOLTAICS; ELECTRON-ACCEPTOR; HIGH-EFFICIENCY; NONFULLERENE ACCEPTORS; ALTERNATIVE STRATEGY; CONJUGATED POLYMERS; 3D STRUCTURE; DONOR; DERIVATIVES;

D O I：

10.1016/j.orgel.2017.02.008

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Two ladder-type small molecule acceptors IDT-BT-R and IDT-BT-R-CN are utilized in non-fullerene polymer solar cells by pairing with PTB7-Th as donor polymer, in which PTB7-Th: IDT-BT-R solar cells achieve high performance up to 8.3% with high voltage of 1.02 V and low energy loss of 0.59 eV. Thermal annealing triggered local rearrangement of ladder-type molecules in n-type phases of bulk heterojunction films, increased their absorption abilities and electron transport properties, therefore resulting in improved short-circuit current densities (Jscs) and fill factors (FFs), in contrast to fullerene-based solar cells which suffered from extensive aggregation of fullerenes upon annealing. The outstanding thermal stability, high performance and low energy loss demonstrated here show great potential of non-fullerene polymer solar cells. (C) 2017 Elsevier B. V. All rights reserved.

引用

页码：217 / 224

页数：8

共 63 条

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