Patent ID: 6242275
Filing Date: 2001-06-05
Classification: B82Y,H01L,Y10S

Abstract:
A method of making quantum wires, on a structure grown in an orientation of (011) including a GaAs single crystal substrate having a facet, a GaAs buffer layer and at least one layer of GaAs and AlAs, said method comprising the steps of:(1) growing a GaAs buffer layer on the facet of the GaAs single crystal substrate;(2) growing an AlAs layer for forming a mask;(3) growing a GaAs layer for forming a V-groove;(4) sequentially repeating steps (2) and (3) for forming a plurality of quantum wires in each respective GaAs layer grown at step (3);(5) depositing a protective cover layer of GaAs on the uppermost AlAs layer grown on the structure;(6) cutting the entire structure including the GaAs protecting cover layer in a perpendicular direction of (011), so as to expose the facet in an orientation of (100);(7) heating the entire structure to expose the facet for forming an oxide film pattern on the exposed portion of each AlAs layer;(8) etching each exposed GaAs layer chemically using the oxide as mask an forming V-groove so that the facet (111) of GaAs layer is exposed; and(9) growing the quantum wire in the V-groove(a) growing a first barrier layer in the V-groove;(b) forming a well layer using one of GaAs and InGaAs; and(c) growing a second barrier layer for burying the well layer in two dimensions.