Fabrication, Characteristics and Application in Dye-Sensitized Solar Cell of Vertically Alligned ZnO Nanorod Arrays Guided with Polyethyleneimine via Hydrothermal Method

Abstract:

.A series of vertically aligned ZnO nanorod-array films are grown on fluorine-doped tin oxide (F: SnO2, FTO) coated glass substrates by the solution-based chemical process. The effect of polyethyleneimine (PEI) adding in seed and growth solution on the structure, morphology, UV-Vis absorption spectra and photovoltaic properties of ZnO nanorod array films, has been analyzed. The XRD and SEM results showed that the ZnO nanorod have the hexagonal wurtzite structure with the (002) direction normal to the substrate. It was observed that with the addition of PEI in growth solution, the ZnO nanorods become smaller in diameter and longer in length i.e. greatly enhance their surface area, leading to improve dye adsorption and photovoltaic performance of DSSCs. The efficiency of ZnO nanorod-based DSSC with PEI in growth solution was on average 1.18 % for film A4, which is 84 % higher than for ZnO nanorod-based DSSC without PEI in growth solution.

• Periodical: Advanced Materials Research (Volume 705)
• Pages: 120-125
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.705.120
• Online since: June 2013
• Authors: Muhammad Saleem, Liang Fang, Fang Wu, L.W. Jun, C.L. Xu, S.J. Xue
• Keywords: Dye Sensitized Solar Cell (DSSC), UV-Vis Absorption Spectrum, ZnO Nanorod

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