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Enhanced performance in organic photovoltaic devices with a KMnO4 solution treated indium tin oxide anode modification
Authors:Yang Qian-Qianab  Zhao Su-Lingab  Xu Zhengab  Zhang Fu-Junab  Yan Guangab  Kong Chaoab  Fan Xingab  Zhang Yan-Feiab  and Xu Xu-
Affiliation:[1]Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing 10004,1, China; [2]Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China
Abstract:The properties of poly(3-hexylthiophene):(6,6)-phenyl C61 butyric acid methyl ester(P3HT:PCBM) organic photovoltaic devices(OPVs) with an indium tin oxide(ITO) anode treated by a KMnO4 solution are investigated.The optimized KMnO4 solution has a concentration of 50 mg/L,and ITO is treated for 15 min.The modification of ITO anode results in an enhancement of the power conversion efficiency(PCE) of the device,which is responsible for the increase of the photocurrent.The performance enhancement is attributed to the work function modification of the ITO substrate through the strong oxygenation of KMnO4,and then the charge collection efficiency is improved.
Keywords:organic photovoltaic devices  indium tin oxide  anode modification  KMnO4
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