Patent ID: 6178190
Filing Date: 2001-01-23
Classification: H01L,H01S

Abstract:
A semiconductor light emitting device having a stacked structure comprising an n-type clad layer, an active layer, and a p-type clad layer on an InP substrate, whereinsaid p-type clad layer is made from an MgZnSeTe-based compound semiconductor lattice-matched with InP, andsaid n-type clad layer is made from a compound semiconductor lattice-matched with InP and selected from the group consisting of an MgZnSeTe-based compound semiconductor, an MgZnCdSe-based compound semiconductor, and an MgCdSSe-based compound semiconductor said light emitting device further comprises a p-type contact layer formed on said p-type clad layer and made from a p-type MgZnSeTe based II-VI compound semiconductor lattice-matched with InP, and said p-type contact layer has an Mg composition smaller than an Mg composition of said p-type clad layer and a p-type carrier concentration of not less than 1.times.10.sup.-18 cm.sup.-3.