Small molecule acceptors with indacenodithiophene-benzodithiophene-indacenodithiophene as donating cores for solution-processed non-fullerene solar cells

被引：11
|
作者：
Zhu, Jianing [1 ]
Zheng, Xiangjun [1 ,3 ]
Tan, Hua [1 ]
Tan, Hongyi [1 ]
Yang, Jia [1 ]
Yu, Junting [2 ]
Zhu, Weiguo [1 ,3 ]
机构：
[1] Xiangtan Univ, Minist Educ, Key Lab Environm Friendly Chem & Applicat, Coll Chem, Xiangtan 411105, Peoples R China
[2] Hunan Univ Sci & Technol, Coll Chem & Chem Engn, Minist Educ, Key Lab Theoret Organ Chem & Funct Mol, Xiangtan 411201, Peoples R China
[3] Changzhou Univ, Jiangsu Collaborat Innovat Ctr Photovolta Sci & E, Sch Mat Sci & Engn, Changzhou 213164, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2019年 / 726卷
基金：
中国国家自然科学基金; 湖南省自然科学基金;
关键词：
Low bandgap; Non-fullerene acceptor; Benzodithiophene; Polymer solar cells; PERFORMANCE; EFFICIENCY; UNIT;
D O I：
10.1016/j.cplett.2019.04.024
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：
Two acceptor-donor1-donor2-donor1-acceptor (A-D-1-D-2-D-1-A)-type narrow bandgap small molecules BDT(IDT-IC)(2) and BDT(IDT-IC-2F)(2) with indacenodithiophene-benzodithiophene-indacenodithiophene (BDT-(IDT)(2)) as donating cores and 2-(3-oxo-2,3-dihydroinden-1-ylidene) malononitrile (IC) or 2-(5,6-difluoro-3-oxo-2,3-di-hydro-1H-inden-1-ylidene) malononitrile (2FIC) as end groups, have been synthesized and investigated as non-fullerene acceptors in solution-processed polymer solar cells (PSCs). The optical bandgaps of BDT(IDT-IC)(2) and BDT(IDT-IC-2F)(2) are 1.59 eV and 1.54 eV, respectively. Using PBDB-T as donor, the power conversion efficiencies (PCEs) of 4.98% and 6.21% are achieved by PSCs based on BDT(IDT-IC)(2) and BDT(IDT-IC-2F)(2), respectively.
引用
收藏
页码：7 / 12
页数：6
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