Journal
APPLIED PHYSICS LETTERS
Volume 94, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3116617
Keywords
energy gap; II-VI semiconductors; nanopatterning; nanostructured materials; photoluminescence; platinum; semiconductor thin films; surface plasmons; surface treatment; zinc compounds
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Funding
- MOE [RG40/07]
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The authors report the enhancement of the bandgap emission from ZnO thin films by surface modification and surface plasmon cross-coupling. 12-fold and twofold enhancements of bandgap emission from the metal side of ZnO film were observed by sputtering Pt nanopattern and Pt film onto ZnO film, respectively. Time-resolved photoluminescence indicates that the decay time is slowed down by Pt capping, contrary to common observations. The abnormal phenomena are interpreted by considering both the surface modification and surface plasmon coupling.
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