Patent ID: 6665329
Filing Date: 2003-12-16
Classification: H01L

Abstract:
A visible light source device, comprising:a substrate layer comprising a top and bottom, a GaN buffer layer grown on the top of said substrate layer, a GaN layer grown on said GaN buffer layer, a n-Al0.2Ga0.8N layer grown on said GaN layer, a semiconductor quantum well structure grown on said n-Al0.2Ga0.8N layer, a p-Al0.2Ga0.8N layer grown on said semiconductor quantum well structure, a p-Al0.1Ga0.9N layer grown on said p-Al0.2Ga0.8N layer, a p-GaN contact layer; and a nanocluster film having strong absorption in the ultraviolet wavelength range and strong emission in the visible wavelength range deposited on the bottom of said substrate layer.