Naphthodithiophene-2,1,3-benzothiadiazole copolymers for bulk heterojunction solar cells |
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| Authors: | Wang Bao Tsang Sai-Wing Zhang Weifeng Tao Ye Wong Man Shing |
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| Affiliation: | Institute of Molecular Functional Materials and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China. |
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| Abstract: | Two newly synthesized naphthodithiophene-based copolymers, PNB, exhibit a low optical bandgap of ～1.64 eV with which the solar cells fabricated from the blend of PNB and PC(71)BM afforded a power conversion efficiency of 5.3% with external quantum efficiency over 60% in a broad spectral range. |
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