Ghosh, Manoranjan ; Raychaudhuri, A. K. (2011) Electric field induced reversible control of visible photoluminescence from ZnO nanoparticles Applied Physics Letters, 98 (15). 153109_1-153109_3. ISSN 0003-6951
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Official URL: http://link.aip.org/link/?APPLAB/98/153109/1
Related URL: http://dx.doi.org/10.1063/1.3578194
Abstract
Reversible control of the photoluminescence of ZnO occurring in the visible range, has been achieved by application of a few volts (<5 V) 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 s, 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Defect States; Electrochemical Electrodes; Electroluminescence; Electro-optical Effects; II-VI Semiconductors; Nanoparticles; Photoluminescence; Polymer Electrolytes; Semiconductor Thin Films; Solid Electrolytes; Wide Band Gap Semiconductors; Zinc Compounds |
| ID Code: | 42632 |
| Deposited On: | 04 Jun 2011 12:50 |
| Last Modified: | 04 Jun 2011 12:50 |
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