New moderate bandgap polymers containing alkoxysubstituted‐benzo[c][1,2,5]thiadiazole and thiophene‐based units |
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| Authors: | Zheng Bang Lim Bofei Xue Swarnalatha Bomma Hairong Li Shuangyong Sun Yeng Ming Lam Warwick J. Belcher Paul C. Dastoor Andrew C. Grimsdale |
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| Affiliation: | 1. School of Materials Science and Engineering and Energy Research Institute at NTU, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;2. Centre for Organic Electronics, University of Newcastle, New South Wales 2308, Australia |
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| Abstract: | Alkoxysubstituted benzo[c][1,2,5]thiadiazole electron accepting units were prepared and copolymerized with various thiophene‐based electron donating monomers to produce new low bandgap polymers P1–4 . The materials showed broad absorption in the range from 300 to 700 nm with bandgaps below 2 eV in solution. Efficiencies of over 1% were obtained from photovoltaic cells using P4 with PCBM as acceptor. © 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2011 |
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| Keywords: | atomic force microscopy conjugated polymers copolymerization heteroatom‐containing polymers organic solar cells |
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