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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/124

Title: Observation of a large gate-controlled persistent photoconduction in single crystal ZnO at room temperature
Authors: Mondal, Shahnewaz
Raychaudhuri, A K
Issue Date: 2011
Publisher: Applied Physics Letters
Citation: Shanewaz Mandal and A. K. Raychaudhuri, Observation of a large gate- controlled persistent photoconduction in single crystal ZnO at room temperatures, Applied Physics Letters, 2011, 98, 023501
Abstract: Gate-controlled enhanced photoconductivity at room temperature is reported in single crystal ZnO using moderate bias and band gap illumination. A substantial part of the enhanced photocurrent is retained over a long time as a persistent photocurrent when the illumination is removed but the gate voltage applied with a polymer-electrolyte gate is retained. The current on the removal of illumination shows a stretched exponential decay with time constants more than few hundreds of seconds. An explanation based on change in charge state of oxygen vacancy has been proposed.
URI: http://hdl.handle.net/123456789/124
Appears in Collections:2011

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