Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 2, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2957470
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Asymmetric Schottky barriers between ZnO nanowire and metal electrode have been fabricated at the two ends of the nanowire. An obvious photocurrent generated from the device at zero voltage bias can be switched on/off with quick response by controlling the light irradiation. Moreover, the device can still afford a current at zero bias after switching off light illumination, which is ascribed to the charge storage effect in single ZnO nanowires. The underlying mechanisms related to the photovoltaic effect and charge storage were discussed. (C) 2008 American Institute of Physics.
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