Transport and spectroscopic studies of the effects of fullerene structure on the efficiency and lifetime of polythiophene-based solar cells

被引：6
|
作者：
Sena, Emilee L. [1 ,2 ]
Peel, Justin H. [1 ]
Wesenberg, Devin [1 ]
Nathan, Shreya [1 ]
Wallis, Marianne [2 ]
Giammona, Maxwell J. [2 ]
Adalsteinsson, Thorsteinn [2 ]
McNelis, Brian J. [2 ]
Barber, Richard P., Jr. [1 ]
机构：
[1] Santa Clara Univ, Dept Phys, Santa Clara, CA 95053 USA
[2] Santa Clara Univ, Dept Chem & Biochem, Santa Clara, CA 95053 USA
来源：
SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2012年 / 100卷
基金：
美国国家科学基金会;
关键词：
Polymer photovoltaic; Stability; Fullerenes; Electron acceptor; UV-vis spectroscopy; PHOTOVOLTAIC DEVICES; CONJUGATED POLYMERS; POLY(3-HEXYLTHIOPHENE); DERIVATIVES; ABSORPTION;
D O I：
10.1016/j.solmat.2012.01.014
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：
Time-dependent measurements of both power conversion efficiency and ultraviolet-visible absorption spectroscopy have been observed for solar cell blends containing the polymer poly(3-hexylthiophene-2,5-diyl) (P3HT) with two different functionalized C-60, electron acceptor molecules: commercially available [6,6]-phenyl C-61 butyric acid methyl ester (PCBM) or [6,6]-phenyl C-61 butyric acid octadecyl ester (PCBOD) produced in this laboratory. Efficiency was found to decay with an exponential time dependence, while spectroscopic features show saturating exponential behavior. Time constants extracted from both types of measurements showed reasonable agreement for samples produced from the same blend. In comparison to the PCBM samples, the stability of the PCBOD blends was significantly enhanced, while both absorption and power conversion efficiency were decreased. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：192 / 198
页数：7
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