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Issue 9, 2013
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Enhanced photovoltaic performance of dye-sensitized solar cells based on ZnO microrod array/TiO2nanoparticle hybrid films

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Abstract

We report in this paper a simple and cheap method for the preparation of ZnO microrod array/TiO2 nanoparticle hybrid films for applications in dye-sensitized solar cells (DSCs), which is achieved by screen printing TiO2 paste into the interspace of low-density ZnO microrod arrays grown on FTO glass. The as-fabricated DSCs exhibit a remarkably enhanced power conversion efficiency of 7.76%, higher than 6.57% for standard TiO2 nanoparticle based DSCs. The electrochemical impedance spectroscopy analysis reveals that the electron transport, electron lifetime, effective diffusion length and the electron collection efficiency are increased, while the charge recombination is reduced, indicating that the ZnO microrod array/TiO2 nanoparticle hybrid film can be considered as a superior material to TiO2 nanoparticle in many respects.

Graphical abstract: Enhanced photovoltaic performance of dye-sensitized solar cells based on ZnO microrod array/TiO2 nanoparticle hybrid films

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Article information


Submitted
23 Oct 2012
Accepted
22 Dec 2012
First published
07 Jan 2013

J. Mater. Chem. A, 2013,1, 3112-3117
Article type
Paper

Enhanced photovoltaic performance of dye-sensitized solar cells based on ZnO microrod array/TiO2 nanoparticle hybrid films

G. Yang, Q. Wang, C. Miao, Z. Bu and W. Guo, J. Mater. Chem. A, 2013, 1, 3112
DOI: 10.1039/C2TA00811D

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