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Enhanced performance of polymer solar cells through sensitization by a narrow band gap polymer

被引：56
作者：
An, Qiaoshi [1 ]
Zhang, Fujun [1 ]
Zhang, Jian [2 ]
Tang, Weihua [3 ]
Wang, Zixuan [1 ]
Li, Lingliang [1 ]
Xu, Zheng [1 ]
Teng, Feng [1 ]
Wang, Yongsheng [1 ]
机构：
[1] Beijing Jiaotong Univ, Minist Educ, Key Lab Luminescence & Opt Informat, Beijing 100044, Peoples R China
[2] Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
[3] Nanjing Univ Sci & Technol, Minist Educ China, Key Lab Soft Chem & Funct Mat, Nanjing 210094, Jiangsu, Peoples R China
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2013年 / 118卷
基金：
北京市自然科学基金;
关键词：
Polymer solar cells; Ternary blend films; Narrow band gap polymer; Power conversion efficiency; OPEN-CIRCUIT VOLTAGE; TANDEM POLYMER; BLEND; FABRICATION; EFFICIENCY;
D O I：
10.1016/j.solmat.2013.07.050
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The performance of polymer solar cells (PSCs), based on poly(3-hexylthiophene) (P3HT) and [6,6]phenyl-C-71 -butyric acid methyl ester (PC71BM), were improved by adding poly[(4,8-bis-(2-ethylhexyloxy)-benzo [1,2-b:4,5-b '](dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene)-2,6-diyl] (PBDTTT-C). The absorption region of the ternary blend films is extended into near infrared region (NIR). Power conversion efficiency (PCE) of the ternary blend PSCs is improved to 2.48% with 6% PBDTTT-C, which is 27% higher than the binary blend PSCs. The dominant mechanism for the PCE improvement could be attributed to the well balance between photon harvest and charge carrier transport by doping proper concentration PBUTTT-C. The energy transfer or charge carrier transfer directly between P3HT and PBDTTT-C was investigated, which are found to be positive for the performance improvement of ternary blend PSCs. (C) 2013 Elsevier
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页码：30 / 35
页数：6
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