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We report novel methods to enhance light emission efficiencies from InGaN/GaN quantum wells (QWs) based on nanophotonics and plasmonics. First, the nanoscopic optical properties were observed and characterized based on the carrier localization and the quantum confinement Stark effect depending on the In composition of InGaN. Based on the results, we proposed that the emission efficiencies should be...
This research describes theoretical and experimental evaluations of electromagnetic fields around ordered arrangements of gold and silver nano-pillars. Finite difference time domain method is employed in simulating the periodic arrangements of nano-pillars having different geometries. Metallic nanostructures are developed using the focused ion beam (FIB) milling process. These structures are also...
A simple method has been developed for homogeneous deposition of uniform Au-core Ag-shell nanoparticles on glass substrate. The method uses uniform gold colloid as seed and a silver enhancing kit to provide silver overlayer with improved fluorescence enhancement properties. Depending on size of these nanoparticles, the fluorescence of FITC-HSA monolayer deposited over the nanoparticles is either quenched,...
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