Patent ID: 6631150
Filing Date: 2003-10-07
Classification: B82Y,H01L,H01S

Abstract:
An (Al,Ga,In)P semiconductor device comprising:a substrate; and a multilayer structure disposed on the substrate, wherein the multilayer structure comprises a first semiconductor layer, a second semiconductor layer disposed on the first semiconductor layer, and at least a third semiconductor layer and a fourth semiconductor layer being disposed between the substrate and a contact region within the multilayer structure, the third and fourth layers being composed of optical guiding material, characterized in that the device further comprises a Ga1âˆ’yInyP layer for inhibiting the propagation of anti-phase domain defects from the first semiconductor layer into the second semiconductor layer, and the bandgap of the layer for inhibiting the propagation of defects is substantially equal to the bandgap of a semiconductor layer adjacent to the layer for inhibiting the propagation of defects.