Efficiency enhancement of P3HT:PCBM polymer solar cells using oligomers DH4T as the third component

被引：6
作者：
Fu, Ping [1 ,2 ,4 ]
Yang, Dong [1 ,2 ,4 ]
Zhang, Fujun [3 ]
Yu, Wei [1 ,2 ,4 ]
Zhang, Jian [1 ,2 ]
Li, Can [1 ,2 ]
机构：
[1] Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
[2] Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
[3] Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
SCIENCE CHINA-CHEMISTRY | 2015年 / 58卷 / 07期
基金：
中国国家自然科学基金;
关键词：
ternary polymer solar cells; P3HT:PC61BM; oligomer; mobility; balanced charge carrier transportation; PHOTOVOLTAIC PERFORMANCE; FILM; P3HT/PCBM; BLEND; POLY(3-HEXYLTHIOPHENE); METHANOFULLERENE; ORGANIZATION; TEMPERATURE; TRANSISTORS; MORPHOLOGY;
D O I：
10.1007/s11426-015-5328-7
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We assembled a ternary blend bulk heterojunction polymer solar cell (PSCs) containing P3HT (donor) and PC61BM (acceptor) incorporated with a small molecule oligomer, dihexyl-quaterthiophene (DH4T) as a third component. By optimizing the contents of DH4T, we increased the power conversion efficiency of ternary P3HT: DH4T: PC61BM PSCs to 4.17% from 3.44% of binary P3HT: PC61BM PSCs under AM 1.5 G of 100 mW/cm(2) intensity. The major improvement is from the increase of the short circuit current and fill factor that is due to the increased light absorption at short wavelength, the balanced charge carrier transportation and the enhanced hole evacuation by a DH4T-enriched layer at the anode interface. In this work, we demonstrated that the efficiency of the PSCs can be enhanced by using low-bandgap conjugated polymer and its oligomer as donors and fullerene derivatives as acceptors.
引用
收藏
页码：1169 / 1175
页数：7
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