Synthesis of a soluble polythiophene copolymer with thiophene–vinylene conjugated side chain and its applications in photovoltaic devices |
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| Authors: | Bo Qu Zhongliang Jiang Zhijian Chen Lixin Xiao Di Tian Chao Gao Wei Wei Qihuang Gong |
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| Affiliation: | 1. Department of Physics, State Key Laboratory for Artificial Microstructures and Mesoscopic Physics, Peking University, 100871, People's Republic of China;2. Xi'an Modern Chemistry Research Institute, Xi'an Shaanxi, 710065, People's Republic of China;3. State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and precision Mechanics, Chinese Academy of Science (CAS) Xi'an Shaanxi, 710119, People's Republic of China;4. Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing 210003, China |
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| Abstract: | A new soluble polythiophene copolymer with thiophene‐vinylene conjugated side chain poly[3‐(5′‐octylthienylenevinyl) thiophene]‐thiophene (POTVTh‐Th) was successfully synthesized and characterized using NMR, UV‐visible spectroscopy, etc. To study the photovoltaic property of the copolymer, photovoltaic device of ITO/PEDOT:PSS/POTVTh‐Th:[6,6]‐phenyl C61‐butyric acid methyl ester (PC61BM) (weight ratio being 1 : 1)/LiF/Al was fabricated, in which POTVTh‐Th acted as the electron donor in the active layer. Under 100 mW/cm2 AM 1.5G simulated solar emission, the open‐circuit voltage and the short‐circuit current density of the device were 0.58 V and 2.50 mA/cm2, respectively. The power conversion efficiency and the fill factor of the photovoltaic device were evaluated to be 0.42% and 0.30. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 |
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| Keywords: | polythiophene polymers organic photovoltaic devices solar cells bulk‐heterojunction |
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