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Modulation of Excitonic Emission from ZnO Nanocrystals by Visible Light Illumination
- Issue Date
- May-2008
- Publisher
- IOP PUBLISHING LTD
- Keywords
- ZnO; photoluminescence; modulation
- Citation
- JAPANESE JOURNAL OF APPLIED PHYSICS, v.47, no.5, pp.3760 - 3762
- Indexed
- SCIE
SCOPUS
- Journal Title
- JAPANESE JOURNAL OF APPLIED PHYSICS
- Volume
- 47
- Number
- 5
- Start Page
- 3760
- End Page
- 3762
- ISSN
- 0021-4922
- Abstract
- We report on the optical modulation of ultraviolet (UV) photoluminescence from ZnO nanocrystals excited by He-Cd laser (325 nm) with visible Ar+ laser radiation (488 nm). The effective reversible quenching of the UV luminescence intensity was achieved. The quenching efficiency was found to depend on temperature, the ratio of He-Cd and Ar+ laser intensities, and the frequency of modulation.
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