Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 581, Issue -, Pages 610-615Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2013.07.171
Keywords
Dye sensitized solar cells; Hierarchical ZnO nanostructured film; Photoanode; Photoelectric conversion efficiency
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Funding
- National Natural Science Foundation of China [51172085]
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A novel hierarchical ZnO nanostructured film is synthesized via a chemical bath deposition (CBD) method followed by a treatment of thermal decomposition onto a fluorine-doped tin oxide (FTO) substrate. This hierarchical film is composed of disordered ZnO nanorods (NRs) (top layer) and ordered ZnO nanowires (NWs) (bottom layer). The products possess the following features such as high specific surface area, fast electron transport, and pronounced light-scattering effect, which are quite suitable for dye sensitized solar cells (DSSCs) applications. A light-to-electricity conversion efficiency of 5.16% is achieved when the hierarchical ZnO nanostructured film is used as the photoanode under 100 mW cm(-2) illumination. This efficiency is found to be much higher than that of the DSSCs with pure ordered ZnO NWs (1.45%) and disordered ZnO NRs (3.31%) photoanodes. (C) 2013 Elsevier B.V. All rights reserved.
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