Patent ID: 6100542
Filing Date: 2000-08-08
Classification: H01L

Abstract:
A semiconductor device comprising:a semi-insulating substrate made of InP;a channel layer formed on the semi-insulating substrate; andan electron supply layer formed on the semi-insulating substrate for generating a two-dimensional electron gas, the electron supply layer including a doped superlattice layer the superlattice layer including layers of In.sub.X Al.sub.1-X As and layers of In.sub.Y Al.sub.1-Y As which alternate with each other, where X>0.52>Y, the layers of In.sub.X Al.sub.1-X As and the layers of In.sub.Y Al.sub.1-Y As being grown with respect to In.sub.0.52 Al.sub.0.48 As.