A diketopyrrolopyrrole-based nonfullerene acceptor for organic solar cells with a high open-circuit voltage of 1.17 V

被引：5
|
作者：
Liu, Zhitian [1 ]
Zeng, Di [1 ]
Gu, Chengjun [1 ,2 ]
Wen, Jing [3 ]
Duan, Xianbao [1 ,4 ]
Zhang, Qi [1 ]
Min, Jie [2 ]
Gao, Xiang [1 ]
机构：
[1] Wuhan Inst Technol, Inst Mat Optoelect & New Energy, Sch Mat Sci & Engn, Wuhan 430073, Hubei, Peoples R China
[2] Wuhan Univ, Inst Adv Studies, Wuhan 430073, Hubei, Peoples R China
[3] Nanjing Univ, Sch Chem & Chem Engn, Nanjing 210023, Jiangsu, Peoples R China
[4] Huazhong Univ Sci & Technol, Sch Mat Sci & Engn, Wuhan 430073, Hubei, Peoples R China
来源：
POLYMER JOURNAL | 2019年 / 51卷 / 09期
基金：
中国国家自然科学基金;
关键词：
FULLERENE ELECTRON-ACCEPTOR; CONJUGATED POLYMERS; SPIROBIFLUORENE CORE; EFFICIENT; DONOR; MOIETIES; DESIGN;
D O I：
10.1038/s41428-019-0197-0
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A new nonfullerene electron acceptor, BP(DPPB)(4), with a biphenyl core and four diketopyrrolopyrrole (DPP) arms is synthesized. The molecular geometries, energy levels, optical properties, and photovoltaic properties of the acceptor are systematically studied. The relationship between thermal annealing temperature and morphology formation is discussed. Poly(3-hexylthiophene) is chosen as the electron donor material because of its complementary absorption profile and matched energy levels. The optimized organic solar cells can provide a power conversion efficiency of 1.43% with a high open-circuit voltage (V-oc) of 1.17 V after thermal annealing at 120 degrees C for 10 min.
引用
收藏
页码：895 / 904
页数：10
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