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01-08-2013 | Brief Communication | Issue 2/2013

Journal of Sol-Gel Science and Technology 2/2013

Improved performance of dye sensitized ZnO nanorod solar cells prepared using TiO2 seed layer

Journal:
Journal of Sol-Gel Science and Technology > Issue 2/2013
Authors:
T. S. Senthil, A.-Young Kim, N. Muthukumarasamy, Misook Kang

Abstract

Zinc oxide (ZnO) nanorods of different structures have been grown on indium-doped tin oxide substrates by using TiO2 as seed layer. The ZnO nanorods have been prepared using TiO2 seed layers annealed at different temperatures via a simple sol–gel method. The X-ray diffraction result indicates that the prepared samples are of wurtzite structure. Dye sensitized solar cells have been fabricated using the prepared ZnO nanorods. The open circuit voltage, short circuit current density, fill factor, and power conversion efficiency of the ZnO nanorod based dye sensitized solar cells prepared using TiO2 seed layers annealed at different temperatures have been determined. The improvement in power conversion efficiency may be due to the flower like structured ZnO nanorods with smaller diameter and large specific surface area which paves way for the efficient electron transfer in hybrid solar cells.

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