Influence of interface modification on the performance of polymer/Bi2S3 nanorods bulk heterojunction solar cells |
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| Authors: | Zhijie Wang Xiangbo Zeng Furui Tan Zhanguo Wang |
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| Institution: | a Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, People's Republic of China
b College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China |
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| Abstract: | In this paper, bulk heterojunction photovoltaic devices based on the poly2-methoxy-5-(3′,7′-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV):Bi2S3 nanorods hybrid material were present. To optimize the performance of the devices, the interface modification of the hybrid material that has a significant impact on the exciton dissociation efficiency was studied. An improvement in the device performance was achieved by modifying the Bi2S3 surface with a thin dye layer. Moreover, modifying the Bi2S3 surface with anthracene-9-carboxylic acid can enhance the performance further. Compared with the solar cells with Bi2S3 nanorods hybrid with the MDMO-PPV as the active layer, the anthracene-9-carboxylic acid modified devices are better in performance, with the power conversion efficiency higher by about one order in magnitude. |
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| Keywords: | Bulk heterojunction solar cells Surface modification Nanorods |
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