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Effect of Ultraviolet Light on Hybrid Zinc Oxide Polymer Bulk Heterojunction Solar Cells |
LIU Jun-Peng1;QU Sheng-Chun1;CHEN Yong-Hai1;XU Ying2;ZENG Xiang-Bo1;LIANG Ling-Yan1;WANG Zhi-Jie1;ZHOU Hui-Ying1;WANG Zhan-Guo1 |
1Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 1000832Beijing Solar Energy Research Institute, Beijing 100083 |
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Cite this article: |
LIU Jun-Peng, QU Sheng-Chun, CHEN Yong-Hai et al 2007 Chin. Phys. Lett. 24 2070-2073 |
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Abstract Compared to conjugated polymer poly[2-methoxy-5-(3',7'-dimethyloctyloxy)% -1,4-phenylenevinylene] (MDMO-PPV) solar cells, bulk heterojunction solar cells composed of zinc oxide (ZnO) nanocrystals and MDMO-PPV have a better energy conversion efficiency. However, ultraviolet (UV) light deteriorates the performance of solar cells composed of ZnO and MDMO-PPV. We propose a model to explain the effect of UV illumination on these ZnO:MDMO-PPV solar cells. According to this model, the degradation from UV illumination is due to a decrease of exciton dissociation efficiency. Our model is based on the experimental results such as the measurements of current density versus voltage, photoluminescence, and photocurrent.
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Keywords:
73.50.Pz
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Received: 27 February 2007
Published: 25 June 2007
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PACS: |
73.50.Pz
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(Photoconduction and photovoltaic effects)
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