Synthesis and photovoltaic properties of polythiophene derivatives with side chains containing C60 end group |
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| Authors: | Youjun He Jianhui Hou Zhan'ao Tan Yongfang Li |
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| Affiliation: | 1. Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China;2. Graduate University of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | A donor–acceptor double‐cable polythiophene derivative ( PT‐F1 ) with side chain containing C60 end group was synthesized, and characterized by infrared, UV‐vis absorption and photoluminescence (PL) spectroscopy, and electrochemical cyclic voltammetry. Cyclic voltammogram of PT‐F1 shows the oxidation peak of the polymer main chains and the reduction peaks of the C60 end groups, indicating that there is no interaction between the polymer main chains and side chain C60 groups on the ground state. The UV‐vis absorption spectrum of PT‐F1 film is red‐shifted in comparison with that of its chloroform solution. The PL spectrum of the polymer main chain was quenched by the C60 pendant on the side chain. Polymer solar cell with the structure of ITO/PEDOT:PSS/ PT‐F1 /Ca/Al was fabricated. The power conversion efficiency of the device based on PT‐F1 reached 0.274% under the illumination of AM 1.5, 100 mW/cm2. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 |
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| Keywords: | donor– acceptor double‐cable polymers polythiophene derivatives polymer solar cells |
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