Patent ID: 8906721
Filing Date: 2014-12-09
Classification: B82Y,H01L,H01S,Y10S

Abstract:
1. A method for manufacturing a semiconductor light emitting device comprising: forming a lower cladding layer over a GaAs substrate; forming a quantum dot active layer over the lower cladding layer; forming an InGaP layer or an InGaAsP layer on an uppermost GaAs layer of the quantum dot active layer or on a first GaAs layer being formed over the quantum dot active layer; forming an InGaP diffraction grating or an InGaAsP diffraction grating which is the InGaP layer or the InGaAsP layer separated in a narrow line-shape by etching the InGaP layer or the InGaAsP layer periodically such that the uppermost GaAs layer or the first GaAs layer is exposed; forming a second GaAs layer burying the InGaP diffraction grating or the InGaAsP diffraction grating so as to be in contact with the uppermost GaAs layer or the first GaAs layer; and forming an upper cladding layer having a conductive type different from that of the lower cladding layer over the second GaAs layer, wherein the processes after the forming the quantum dot active layer are performed at a temperature not thermally deteriorating or degrading quantum dots included in the quantum dot active layer.