Volume 131, Issue 2
Article

P3HT : PCBM solar cells—The choice of source material

Annie Ng

Annie Ng

Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong

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Xiang Liu

Xiang Liu

Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong

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Wai Yan Jim

Wai Yan Jim

Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong

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Aleksandra B. Djurišić

Aleksandra B. Djurišić

Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong

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Kin Cheung Lo

Kin Cheung Lo

Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong

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Sheung Yin Li

Sheung Yin Li

Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong

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Wai Kin Chan

Corresponding Author

Wai Kin Chan

Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong

Correspondence to: A. B. Djurišić (E-mail: [email protected])Search for more papers by this author
First published: 02 August 2013
Citations: 18

ABSTRACT

Bulk heterojunction solar cells based on P3HT : PCBM blend films are among the most intensively studied polymer solar cells. In spite of that, there is a huge variation of reported efficiencies in the literature, even for same device architectures and film preparation procedures. Here we investigated the influence of starting properties of P3HT and PCBM (different suppliers) on blend film morphology and device performance. We found that there was a strong dependence of the film morphology and device performance on the source of chemicals used. Both P3HT and PCBM affected the results, and higher nominal purity did not necessarily result in better device performance. The dependence of the film morphology and device performance on the properties of P3HT and PCBM is discussed in detail. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 39776.

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