Patent ID: 6265732
Filing Date: 2001-07-24
Classification: H01L

Abstract:
A light emitting diode, comprising:a substrate;a light emitting layer;a first cladding layer having a first conductivity type and an energy gap greater than an energy gap of the light emitting layer;a second cladding layer having a second conductivity type and an energy gap greater than an energy gap of the light emitting layer; andan intermediate barrier layer having the same conductivity type as the conductivity type of the light emitting layer but different from the conductivity type of the first or second cladding layer, and having an energy gap less than the energy gap of the first or second cladding layer but greater than the energy gap of the light emitting layer,wherein the light emitting diode has a double heterostructure such that the light emitting layer is interposed between the first and second cladding layer; and the intermediate barrier layer is disposed between the light emitting layer and the first cladding layer and/or between the light emitting layer and the second cladding layer.