Influence of interface modification on the performance of polymer/Bi2S3 nanorods bulk heterojunction solar cells

In this paper, bulk heterojunction photovoltaic devices based on the poly[2-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-9carboxylic acid modified devices are better in performance, with the power conversion efficiency higher by about one order in magnitude.

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This work is supported by the National Natural Science Foundation of China with Contract Nos. 60736034 and 60576036, the National Basic Research Programme of China with Contract Nos. 2006CB202604 and 2006CB604904, and the National High Technology Research and Development Program of China with Contract No. 2006AA03Z408.

国内

This work is supported by the National Natural Science Foundation of China with Contract Nos. 60736034 and 60576036, the National Basic Research Programme of China with Contract Nos. 2006CB202604 and 2006CB604904, and the National High Technology Research and Development Program of China with Contract No. 2006AA03Z408.