Patent ID: 6448582
Filing Date: 2002-09-10
Classification: B82Y,H01L,H01S

Abstract:
A light emitting device, comprising:a first part comprising a source of excess minority carriers; a second part coupled to said first part, said second part comprising a minority carrier barrier; and a third part coupled to said second part, said third part comprising a region that exhibits a low radiative recombination efficiency and a short minority carrier lifetime; wherein in response to a first stimulus minority carriers are constrained by said second part to remain in said first part, leading to an increase of minority carrier radiative recombination in said first part and an increase in light emission; and wherein in response to a second stimulus said minority carriers are enabled to cross said minority carrier barrier of said second part to enter said third part, leading to a decrease of minority carrier radiative recombination in said first part and a decrease in light emission.