Influence of Surface Plasmon Resonance on ZnO Films Photoluminescence. Role of Excitation Level
| Autor: | Mikhail V. Ryzhkov, S. I. Rumyantsev, V. M. Markushev, Ch. M. Briskina, V. L. Lyaskovskii, A. P. Tarasov |
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| Rok vydání: | 2015 |
| Předmět: |
Quenching
Materials science Photoluminescence Condensed matter physics Condensed Matter::Other Exciton Analytical chemistry Physics::Optics Joule Rate equation Electronic Optical and Magnetic Materials Condensed Matter::Materials Science Physics::Atomic and Molecular Clusters Electrical and Electronic Engineering Surface plasmon resonance Luminescence Excitation |
| Zdroj: | Journal of Nanoelectronics and Optoelectronics. 9:769-772 |
| ISSN: | 1555-1318 1555-130X |
| DOI: | 10.1166/jno.2014.1672 |
| Popis: | In the course of luminescence enhancement investigation of ZnO films coated with Ag the authors discovered that enhancement by surface plasmon resonance takes place only under low enough pumping level while under a high pumping level only quenching is observed. For interpretationof this effect simplified mathematical model describing influence of surface plasmon resonance on near band edge luminescence in ZnO is proposed. Proposed model is presented by set of rate equations considering particularly increasing of exciton recombination probability and losses depended on pumping level. These losses most likely should be of Joule’s type. Experimental dependences of excitonic luminescence intensity of ZnO films coated with Ag on pumping level appear to be close to simplified theoretical ones based on this model. |
| Databáze: | OpenAIRE |
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