| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Efficient Annealing-Free P3HT:PC61BM-Based Organic Solar Cells by Using a Novel Solvent Additive without a Halogen or Sulphur Atom |
| XIAO Man-Jun1,2, SHEN Wen-Fei2, WANG Jun-Yi2, HAN Liang-Liang2, CHEN Wei-Chao2**, BAO Xi-Chang2, YANG Ren-Qiang2**, ZHU Wei-Guo1** |
1College of Chemistry, and Key Lab of Environment-Friendly Chemistry and Application (Ministry of Education), Xiangtan University, Xiangtan 411105
2CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101
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| Cite this article: |
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XIAO Man-Jun, SHEN Wen-Fei, WANG Jun-Yi et al 2015 Chin. Phys. Lett. 32 028802 |
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Abstract The power conversion efficiency (PCE) of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PC61BM) based organic solar cells (OSCs) is significantly improved by using benzyl acetate (BA), an organic compound without any halogen or sulphur atom, as a processing additive to control the blend morphology. The solar cells show PCE of 3.85% with a fill factor (FF) of 65.22%, which are higher than those of the common thermal annealing device (PCE 3.30%, FF 60.83%). The overall increased PCE depends upon the enhanced crystallinity of P3HT and good carriers transport, with a high balanced charge carrier mobility.
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Published: 20 January 2015
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| PACS: |
88.40.jr
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(Organic photovoltaics)
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88.40.hj
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(Efficiency and performance of solar cells)
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88.40.fh
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(Advanced materials development)
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