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Enhanced performance in organic photovoltaic devices with KMnO4 solution treated indium tin oxide anode modification |
Yang Qian-Qian (杨倩倩)a b, Zhao Su-Ling (赵谡玲)a b, Zhang Fu-Jun (张福俊)a b, Yan Guang (闫光)a b, Kong Chao (孔超)a b, Fan Xing (樊星)a b, Zhang Yan-Fei (张妍斐)a b, Xu Xu-Rong (徐叙瑢)a b |
a Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University), Ministry of Education, Beijing 100044, China; b Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing 100044, China |
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Abstract The properties of poly(3-hexylthiophene):(6,6)-phenyl C61 butyric acid methyl ester (P3HT:PCBM) organic photovoltaic devices (OPVs) with indium tin oxide (ITO) anode treated by 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.
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Received: 19 April 2012
Revised: 06 June 2012
Accepted manuscript online:
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PACS:
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84.60.Jt
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(Photoelectric conversion)
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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88.40.hj
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(Efficiency and performance of solar cells)
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88.40.jr
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(Organic photovoltaics)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 10974013 and 60978060), the Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20090009110027), the Beijing Municipal Natural Science Foundation, China (Grant No. 1102028), the New Century Excellent Talents in University, China (Grant No. NCET-10-0220), the Fundamental Research Funds for the Central Universities, China (Grant No. 2012JBZ001), and the Technology Innovation Fund for Outstanding Ph. D. Students of Beijing Jiaotong University, China (Grant No. 48034). |
Corresponding Authors:
Zhao Su-Ling
E-mail: slzhao@bjtu.edu.cn
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Cite this article:
Yang Qian-Qian (杨倩倩), Zhao Su-Ling (赵谡玲), Zhang Fu-Jun (张福俊), Yan Guang (闫光), Kong Chao (孔超), Fan Xing (樊星), Zhang Yan-Fei (张妍斐), Xu Xu-Rong (徐叙瑢) Enhanced performance in organic photovoltaic devices with KMnO4 solution treated indium tin oxide anode modification 2012 Chin. Phys. B 21 128402
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