Degradation of semiconducting polymers by concentrated sunlight

被引：54

作者：

Tromholt, Thomas ^{[1
]}

Manceau, Matthieu ^{[1
]}

Helgesen, Martin ^{[1
]}

Carle, Jon E. ^{[1
]}

Krebs, Frederik C. ^{[1
]}

机构：

[1] Tech Univ Denmark, Riso Natl Lab Sustainable Energy, DK-4000 Roskilde, Denmark

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2011年 / 95卷 / 05期

关键词：

Organic solar cells; Semiconducting polymers; Degradation; Stability; Concentrated sunlight; HETEROJUNCTION SOLAR-CELLS; EFFICIENCY; INTENSITY;

D O I：

10.1016/j.solmat.2010.09.022

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：

A lens based sunlight concentration setup was used to accelerate the degradation of semiconducting polymers. Sunlight was collected outdoor and focused into an optical fiber bundle allowing for indoor experimental work. Photo-degradation of several polymers was studied by UV-vis absorbance spectroscopy and infra-red spectroscopy. This showed that the degradation rate is significantly increased by increasing illumination intensity. Acceleration factors exceeding 100 compared to standard 1 sun illumination were observed for solar concentration of 200 suns in the case of P3HT. A comparison between infra-red spectra of MEH-PPV degraded at 1 sun intensity and at high solar concentration only showed minor deviations in degradation mechanisms. The acceleration factor was found to vary linearly with the solar concentration. Finally, a comparison of the degradation rates at 1 sun and 100 suns was carried out in a materials study employing five different conjugated polymers relevant to polymer solar cells for which acceleration factors in the range 19-55 were obtained. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1308 / 1314

页数：7

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