| Literature DB >> 23662095 |
Joanna Papierska1, Bartłomiej S Witkowski, Anastasiya Derkachova, Krzysztof P Korona, Johannes Binder, Krzysztof Gałkowski, Lukasz Wachnicki, Marek Godlewski, Tomasz Dietl, Jan Suffczyński.
Abstract
A simple fabrication method of silver (Ag) nanoislands on ZnO films is presented. Continuous wave and time-resolved photoluminescence and transmission are employed to investigate modifications of visible and UV emissions of ZnO brought about by coupling to localized surface plasmons residing on Ag nanoislands. The size of the nanoislands, determining their absorption and scattering efficiencies, is found to be an important factor governing plasmonic modification of optical response of ZnO films. The presence of the Ag nanoislands of appropriate dimensions causes a strong (threefold) increase in emission intensity and up to 1.5 times faster recombination. The experimental results are successfully described by model calculations within the Mie theory.Entities:
Keywords: Exciton; Mie theory; Photoluminescence; Silver nanoislands; Zinc oxide
Year: 2013 PMID： 23662095 PMCID： PMC3646165 DOI： 10.1007/s11468-013-9490-5
Source DB: PubMed Journal: Plasmonics ISSN： 1557-1955 Impact factor: 2.404