Influence of Dewetting Conditions on the Optical Parameters of the AuNP / GaN Nanostructure

Abstract

This paper presents the results of investigation of gold nanoparticle array formation on GaN surface and its plasmon effect. Gold nanoparticles are formed on GaN layer grown by molecular beam epitaxy (MBE) by solid-state dewetting technique both in the air at atmospheric pressure and under vacuum conditions. The influence of the thickness of as-deposited gold film and annealing ambient on the size and spatial distribution of nanoparticles was studied. Investigation of optical characteristics showed the appearance of the surface plasmon resonance effect. The results reveal the possibility to increase the efficiency of GaN-based optoelectronic devices by Au nanoparticle arrays.