Patent ID: 6417522
Filing Date: 2002-07-09
Classification: B82Y,H01L,H01S

Abstract:
A light emitting diode comprising:an ohmic n-electrode on a rear surface of a GaAs substrate; a distributed AlGaAs Bragg reflecting layer in the form of a multi-layer lamination; a first, lower AlGaInP cladding layer grown on the reflecting layer; an AlGaInP active layer grown on the lower cladding layer; a second, upper AlGaInP cladding layer grown on the active layer; a strain layer grown on the second cladding layer, the strain layer comprising a superlattice structure in the form of a plurality of thin alternated AlGaInP layers with the composition; (AlxGa1-x)1-yInyP/(AlaGa1-a)1-bInbP where 0.5&lE;x&lE;1; 0.4&lE;y&lE;0.6/0&lE;a&lE;0.4; 0&lE;b&lE;0.4; a window layer grown on the strain layer; and an ohmic p-electrode on the window layer.