Plasmon-Enhanced Near-Green Light Emission from InGaN/GaN Quantum Wells

Abstract

The plasmonic excitations of square-periodic arrays of silver nanocylinders are used to increase the radiative efficiency of nearby InGaN/GaN quantum wells emitting at near-green wavelengths. These nanostructures allow for an accurate control of the plasmonic resonance wavelength, scattering-absorption ratio, and electromagnetic near-field enhancement via geometrical tuning. In turn, these properties are found to play a critical role in the measured light-emission efficiency enhancements.