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In this letter, we study how coupling between AuNPs and ZnO thin films affects their emission properties. The emission intensity of ZnO thin films changes when Al 2 O 3 spacer layer of different thickness are included in ZnO/Au films, consistent with theoretical predictions. The emission properties are also controlled using the polarization of the excitation source. Emission properties depended on the polarization of the excitation source

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Articles you may be interested inMoiré fringes characterization of surface plasmon transmission and filtering in multi metal-dielectric films Coupling of surface plasmons between two silver films in a Ag / SiO 2 / Ag plasmonic thermal emitter with grating structure Appl.Enhanced light transmission through coupling incident light with surface plasmon polaritons ͑SPPs͒ on a layer-plus-islands nanostructure Ag layer, surrounded by symmetric ZnO dielectrics ͑ZnO/Ag/ ZnO͒, was investigated. The couple and decouple processes at ZnO/Ag and Ag/ZnO grating interfaces were considered to confine the incident light to SPPs ͑near field͒ and then to excite the SPPs to radiate light ͑far field͒, which enhanced light transmission. A broad range of light transmission enhancement showed a blueshift with increasing Ag midlayer mass thickness. The physical reasons for light transmission enhancement were theoretically discussed using both the metal/dielectric grating interface model and the Drude-Lorentz free electron model.