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Bulk heterojunctions based on a low band gap copolymer of thiophene and benzothiadiazole

被引：42
作者：
Bundgaard, Eva
Shaheen, Sean E.
Krebs, Frederik C.
Ginley, David S.
机构：
[1] Riso Natl Lab, Danish Polymer Ctr, DK-4000 Roskilde, Denmark
[2] Natl Renewable Energy Lab, Golden, CO 80401 USA
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2007年 / 91卷 / 17期
关键词：
low band gap polymers; organic photovoltaic; device optimization; efficiency;
D O I：
10.1016/j.solmat.2007.05.013
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：
We report on the incorporation of a low band gap copolymer based on thiophene and benzothiadiazole with a band gap of 1.65 eV into a bulk heterojunction device with the structure ITO/PEDOT:PSS/polymer:PCBM/Al. We have investigated the effects of process variable, including choice of solvent, polymer concentration and annealing temperature, on the photovoltaic device performance. The devices show spectral response down to the absorption edge of 1.65 eV and exhibit an efficiency of 1% under AM 1.5 illumination and a peak external quantum efficiency of 18 % at 600 nm. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1631 / 1637
页数：7
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