Patent ID: 6472695
Filing Date: 2002-10-29
Classification: H01L,H01S

Abstract:
An oxidizable digital alloy that is at least partially strain-compensated, such that the digital alloy can be grown substantially defect-free on indium phosphide, comprising:a layer of semiconductor material; a first layer of indium arsenide, coupled to the layer of semiconductor material, wherein the first layer of indium arsenide is under a compressive strain by a lattice mismatch between the layer of semiconductor material and the first layer of indium arsenide; and a second layer of aluminum arsenide, coupled to the layer of indium arsenide, wherein the first and second layers are thermally wet oxidized to produce an oxide layer therein, second layer of aluminum arsenide is under a tensile strain by a lattice mismatch between the second layer of aluminum arsenide and the first layer of indium arsenide, the first layer and the second layer comprising a digital alloy of aluminum indium arsenide, creating an at least partially strain-compensated digital alloy to the layer of semiconductor material therein, and wherein a superlattice period of the first layer of indium arsenide and a second layer of aluminum arsenide is selected to allow an oxide to be produced from the digital alloy.