1. Improving photovoltaic properties by incorporating both SPFGraphene and functionalized multiwalled carbon nanotubes
- Author
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Liu, Zhiyong, He, Dawei, Wang, Yongsheng, Wu, Hongpeng, Wang, Jigang, and Wang, Haiteng
- Subjects
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GRAPHENE , *CARBON nanotubes , *HETEROJUNCTIONS , *SOLAR cells , *ELECTRON mobility , *EXCITON theory , *DISSOCIATION (Chemistry) , *SOLUTION (Chemistry) - Abstract
Abstract: Solution-processable functionalized graphene (SPFGraphene) and functionalized multiwalled carbon nanotubes(f-MWCNTs) are introduced for heterojunction solar cell. The performance of the device has improved by the incorporation of both SPFGraphene and f-MWCNTs. The open-circuit voltage (V oc), short-circuit current density (J sc), fill factor (FF) and power conversion efficiency (η) were 0.67V, 4.7mA/cm2, 32%, and 1.05%, respectively. Here, we expect that SPFGraphene acts as exciton dissociation and provide percolation paths for electron transfer, whereas f-MWCNTs provide efficient hole transportation. SPFGraphene and f-MWCNTs incorporation yields better carrier mobility, easy exciton splitting, and suppression of charge recombination, thereby improving photovoltaic action. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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