Journal
CHEMICAL PHYSICS LETTERS
Volume 434, Issue 1-3, Pages 96-100Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2006.11.103
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A well-aligned nanorods array of ZnO was chemically grown on conductive ITO substrate at low temperature. The photogenerated charges at surface and interface were examined by surface photovoltage techniques based on both Kelvin probe and lock-in amplifier with de bias. The photovoltage response bands related to band-to-band transition and bound excitons were discriminated. We demonstrated the spectrum-dependent transfer characteristic of photogenerated charges at the surface of ZnO nanorods array and the interface between ZnO and ITO. (c) 2006 Elsevier B.V. All rights reserved.
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