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arXiv · 1109.2968

Electric field induced reversible control of visible photoluminescence from ZnO nanoparticles

Manoranjan Ghosh·A. K. Raychaudhuri
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Abstract

Reversible control of the photoluminescence of ZnO occurring in the visible range, has been achieved by application of a few volts (< 5V) to a device consisting of nanostructured ZnO film sandwiched between Indium Tin Oxide electrode and polyethylene oxide-lithium perchlorate, a solid polymer electrolyte. The photoluminescence intensity shows nearly 100% modulation with a response time less than 30 seconds, when the bias is applied at the electrolyte-electrode. A model is proposed for the observed effect that is based on defect states of ZnO and the band bending at the ZnO-electrolyte interface that can be changed by the applied bias.

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Manoranjan Ghosh, A. K. Raychaudhuri. 2011-09-14. Electric field induced reversible control of visible photoluminescence from ZnO nanoparticles. https://doi.org/10.1063/1.3578194

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