Patent ID: 8509274
Filing Date: 2013-08-13
Classification: B82Y,H01L,H01S

Abstract:
1. A method for producing light emission from a two terminal semiconductor device with improved efficiency, comprising the steps of: providing a layered semiconductor structure including a semiconductor drain region comprising at least one drain layer, a semiconductor base region disposed on said drain region and including at least one base layer, and a semiconductor emitter region disposed on a portion of said base region and comprising an emitter mesa that includes at least one emitter layer and has a substantially rectilinear surface portion; providing, in said base region, at least one region exhibiting quantum size effects; providing a base/drain electrode having a first portion on an exposed surface of said base region and a further portion coupled with said drain region, and providing an emitter electrode on the surface of said emitter region; applying signals with respect to said base/drain and emitter electrodes to obtain light emission from said base region; and configuring said base/drain and emitter electrodes for substantial uniformity of voltage distribution in the region therebetween, including providing said emitter electrode along one side of said surface portion of the emitter mesa and providing the first portion of said base/drain electrode on a portion of the base region surface adjacent the opposite side of said emitter mesa surface portion, and providing said emitter electrode and the first portion of said base/drain electrode as opposing linear conductive strips of different lengths, so that the surface of emitter mesa between said strips is trapezoidal.