Synthesis and Characterization of Graphene-ZnO Nanocomposite and its Application in Photovoltaic Cells
| Autor: | F. S. Ghoreishi, V. Ahmadi, M. Samadpour |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Journal of Nanostructures, Vol 3, Iss 4, Pp 453-459 (2013) |
| Druh dokumentu: | article |
| ISSN: | 2251-7871 2251-788X |
| DOI: | 10.7508/jns.2013.04.010 |
| Popis: | In this paper, we present a simple method for preparation of graphene-ZnO nanocomposites (G-ZnO). The method is based on thermal treatment of the graphene oxide (GO)/ZnO paste which reduces the graphene oxide into the graphene and leads to the formation of the G-ZnO nanocomposite. The structure, morphology and optical properties of synthesized nanocomposites are characterized with XRD, FESEM, FTIR and Raman spectroscopies. Here CdS quantum dots are deposited on G-ZnO nanocomposite structure and is integrated as a photoanode in CdS quantum dot sensitized solar cells (QDSSCs). Photovoltaic properties of CdS QDSSC based on bare ZnO nanoparticles and G-ZnO nanocomposite photoanodes are studied here. The cell with G-ZnO/CdS photoanode shows two times higher photoelectric conversion efficiency than that of the pure ZnO photoanode (0.94 vs. 0.45). |
| Databáze: | Directory of Open Access Journals |
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