Patent ID: 7713802

Claim:
A method of sulfuration treatment for a InAlAs/InGaAs metamorphic high electron mobility transistor (MHEMT), in which the InAlAs/InGaAs metamorphic high electron mobility transistor (MHEMT) is soaked in the (NH 4 ) 2 S y solution, rinsed with deionized water, blown dry, and then irradiated with UV rays; wherein an epitaxy wafer selected for manufacturing of the InAlAs/InGaAs MHEMT is a substrate of GaAs, in which the InAlAs/InGaAs epitaxy wafer is formed in the manner of Molecular Beam Epitaxy (MBE), and the content x of indium(In) in the InxAl1−xAs buffer layer of epitaxy(epi) wafer ranges from 1% up to 70%.