Patent ID: 6737669
Filing Date: 2004-05-18
Classification: H01L

Abstract:
A semiconductor light-emitting device comprising:a compound semiconductor substrate; a first-conductive-type clad layer formed on the compound semiconductor substrate; an active layer formed on the first-conductive-type clad layer and comprised of an AlGaInP-based semiconductor wherein light emitted from the active layer has a wavelength of not greater than 590 nm; a second-conductive-type clad layer formed on the active layer; and a semiconductor layer interposed between the active layer and the first-conductive-type clad layer or the second-conductive-type clad layer, wherein an energy position at a lower end of a conduction band of the semiconductor layer is 0.05 eV to 1.0 eV higher than an energy position at a lower end of a conduction band of the second-conductive-type clad layer in a band profile before formation of a junction between the active layer and the semiconductor layer, and a junction between the semiconductor layer and the first-conductive-type clad layer or the second-conductive-type clad layer.