Effects of Annealing on Polymer Solar Cells with High Polythiophene--Fullerene Concentrations

The effects of annealing at high temperatures on polymer solar cells consisting of conjugated poly(3-hexylthiophene) (P3HT) and fullerene derivative [6,6]-phenyl-C 61 butyric acid methyl ester (PCBM) composites with high concentrations of 3 and 5 wt % are reported. As compared with as-casted samples...

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Bibliographic Details
Published in:Japanese Journal of Applied Physics 2011-04, Vol.50 (4), p.04DK21-04DK21-3
Main Authors: Ho, Chiu-Sheng, Huang, E-Ling, Hsu, Wei-Chou, Lee, Ching-Sung, Lai, Ying-Nan, Lai, Wen-Hsuan
Format: Article
Language:English
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Summary:The effects of annealing at high temperatures on polymer solar cells consisting of conjugated poly(3-hexylthiophene) (P3HT) and fullerene derivative [6,6]-phenyl-C 61 butyric acid methyl ester (PCBM) composites with high concentrations of 3 and 5 wt % are reported. As compared with as-casted samples, the optical intensity in absorption spectra for the 3 wt % film was improved after annealing at temperatures of 110--150 °C, and the device made of 5 wt % blend film after annealing at 150 °C demonstrated nearly sevenfold improvements in both short-circuit current density ($J_{\text{sc}}$) and power conversion efficiency (PCE).
ISSN:0021-4922
1347-4065
DOI:10.1143/JJAP.50.04DK21