Rylene diimide and dithienocyanovinylene copolymers for polymer solar cells |
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| Authors: | Shui-xing Dai Shi-ming Zhang Qi-dan Ling Xiao-wei Zhan |
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| Affiliation: | 1. Fujian Key Laboratory of Polymer Materials, College of Materials Science and Engineering,Fujian Normal University, Fuzhou 350007, China;Department of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China;2. Key Laboratory of Flexible Electronics & Institute of Advanced Materials, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China;3. Fujian Key Laboratory of Polymer Materials, College of Materials Science and Engineering,Fujian Normal University, Fuzhou 350007, China;4. Department of Materials Science and Engineering, College of Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing 100871, China |
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| Abstract: | Two polymers containing (E-2,3-bis(thiophen-2-yl)acrylonitrile (CNTVT) as a donor unit, perylene diimide (PDI) or naphthalene diimide (NDI) as an acceptor unit, are synthesized by the Stille coupling copolymerization, and used as the electron acceptors in the solution-processed organic solar cells (OSCs). Both polymers exhibit broad absorption in the region of 300–850 nm. The LUMO energy levels of the resulted polymers are ca.–3.93 eV and the HOMO energy levels are–5.97 and–5.83 eV. In the binary blend OSCs with PTB7-Th as a donor, PDI polymer yields the power conversion efficiency (PCE) of up to 1.74%, while NDI polymer yields PCE of up to 3.80%. |
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| Keywords: | Perylene diimide Naphthalene diimide Polymer solar cell Non-fullerene acceptor |
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