Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9605661 | Journal of Photochemistry and Photobiology A: Chemistry | 2005 | 5 Pages |
Abstract
A photoelectrode using ZnO coated TiO2 nanoparticles was prepared for use in flexible dye-sensitized solar cells. To provide an inherent energy barrier between the electrode and electrolyte interface, the surface of the TiO2 nanoparticles was modified by thin ZnO layer. X-ray photoelectron spectroscopy and transmission electron microscopy image confirmed the formation of ZnO with a thickness of ca. â¼0.5Â nm, possible thickness for tunneling process in particle-to-particle transport of electrons, on the TiO2 surface. The overall conversion efficiency was increased from 0.71 to 1.21% under a light intensity of 20Â mW/cm2 (0.2 sun) due to the reduced recombination of photoinjected electrons without any post-treatment.
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Authors
Seok-Soon Kim, Jun-Ho Yum, Yung-Eun Sung,