Surface-plasmon-enhanced band emission of ZnO nanoflowers decorated with Au nanoparticles

Chemistry : a European Journal
Saji Thomas KochuveeduDong Ha Kim

Abstract

A simple strategy was used to enhance band emission through the transfer of defect emission from ZnO to Au by using the energy match between the defect emission of ZnO and the surface plasmon absorbance of Au NPs through decorating the surface of ZnO nanoflowers with Au nanoparticles (Au NPs). The ZnO nanostructure, which was comprised of six nanorods that were attached on one side in a flower-like fashion, was synthesized by using a hydrothermal method. The temperature-dependent morphology and detailed growth mechanism were studied. The influence of the density of the Au NPs that were deposited onto the surface of ZnO on photoluminescence was investigated to optimize the configuration of the ZnO/Au system in terms of the maximum band emission. The sequential transfer of defect energy from ZnO to Au and electron transfer from excited Au to ZnO was proposed as a possible mechanism for the enhanced band emission.

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Citations

Aug 25, 2015·Dalton Transactions : an International Journal of Inorganic Chemistry·Jyh Ming Wu, Yu Nong Chen
Jan 24, 2019·Angewandte Chemie·Yin NingSteven P Armes
Oct 17, 2012·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·Puran Kumar De, Douglas C Neckers

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