Patent ID: 7553685
Filing Date: 2009-06-30
Classification: H01L

Abstract:
1. A method of fabricating a light-emitting device having a light-emitting layer section configured as having a double heterostructure in which a first conductivity type cladding layer, an active layer, and a second conductivity type cladding layer, all of which being composed of (Al x Ga 1-x ) y In 1-y P (where, 0≦x≦1, 0≦y≦1), are stacked in this order, and further comprising an ITO transparent electrode layer applying drive voltage for light-emission to the light-emitting layer section on at least either side of the first conductivity type cladding layer and the second conductivity type cladding layer, comprising the steps of: forming a GaAs layer on the light-emitting layer section; forming the ITO transparent electrode layer so as to contact with the GaAs layer to form a stack including the GaAs layer and the ITO transparent electrode layer; and annealing the stack so as to allow In to diffuse from the ITO transparent electrode layer into the GaAs layer to thereby convert it into a contact layer composed of In-containing GaAs, wherein the annealing is carried out so as to adjust a mean In concentration of the contact layer within a range from 0.1 to 0.6 on the basis of atomic ratio of In to the total concentration of In and Ga, wherein the annealing is carried out so as to adjust C wherein the light-emitting layer section is configured using (Al