METHOD FOR MAKING QUANTOM FINE-WELL USING GaAs/AIGaAs SUBSTRATE

摘要

The quantum fine line manufacturing method is comprised of the step of (a) growing AlGaAs layer(20) on a GaAs substrate(10), then forming a photoresist mask(30) for digging a V-groove in [011 direction on the AlGaAs layer(20) by means of the photolithography, the step of (b) etching with etching solution which has volume ratio of H2SO4:H2O2:H2O=1:2:40 to form the V-groove, the step of (c) growing a plurality of GaAs(50) and AlGaAa(40) layers by means of the epitaxial growth method on the substrate where the V-groove is formed to form the quantum fine line(QWRs) in the center of the V-groove. Here, a side quantum well(side-MQWL) is formed in both sides of the quantum fine line simultaneously and a top quantum well(top-MQWL) is formed in the outside of the V-groove simultaneously.