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Germaindacenodithiophene based low band gap polymers for organic solar cells |
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| Authors: | Fei Zhuping Ashraf Raja Shahid Huang Zhenggang Smith Jeremy Kline R Joseph D'Angelo Pasquale Anthopoulos Thomas D Durrant James R McCulloch Iain Heeney Martin |
| Affiliation: | Dept. Chemistry and Centre for Plastic Electronics, Imperial College London, London, SW7 2AZ, UK. |
| Abstract: | We report the first synthesis of a fused germaindacenodithiophene monomer and its polymerisation with 2,1,3-benzothiadiazole by Suzuki polycondensation. The resulting polymer, PGeTPTBT, is semicrystalline, despite the presence of four bulky 2-ethylhexyl groups. Blends with P(70)CBM afford solar cells with efficiencies of 5.02%. |
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