Improved efficiency of organic solar cells with modified hole‐extraction layers |
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| Authors: | Jiao Li Juncheng Liu Congjie Gao |
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| Affiliation: | 1. School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049, People's Republic of China;2. College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, People's Republic of China |
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| Abstract: | The aim of this work has been to study the influence of modified hole‐extraction layers on the performance of organic solar cells (OSCs) based on blends of poly (3‐hexylthiophene) and [6,6]‐phenyl‐C61‐butyric acid methyl ester. The hole‐extraction layers consist of poly (3,4‐ethylene dioxythiophene):polystyrene sulfonic acid (PEDOT:PSS) doped with different concentrations of bromine. Compared with pristine OSC without adding bromine to the hole‐extraction layer, the bromine‐doped OSCs show a 49% increase in the power conversion efficiency (from 2.12 to 3.16%), which could be attributed to the increase of electrical and optical properties of PEDOT:PSS films after the addition of bromine. © 2011 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 125–128, 2012 |
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| Keywords: | bromine conducting materials doping organic solar cells poly(3,4‐ethylene dioxythiophene):polystyrene sulfonic acid (PEDOT:PSS) power conversion efficiency thin film |
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