Patent ID: 6943386

Claim:
A structure of pseudomorphic High Electron Mobility Transistor (pHEMT), which comprising a semiconductor substrate; a buffer layer an said semiconductor substrate; a non-doped strain layer on said buffer layer; a first non-doped spacer layer on said non-doped strain layer; a δ-doped carrier supplying layer on said first non-doped spacer layer; a second non-doped spacer layer on said δ-doped carrier supplying layer; an n-doped semiconductor layer on said second non-doped spacer layer; a p + -doped semiconductor layer on said n-doped semiconductor layer; and an n + -doped semiconductor covering layer over the aforementioned p + -doped semiconductor layer; wherein the structure of the presented pHEMT, the first non-doped spacer layer, the second non-doped spacer layer, the n-doped semiconductor layer, and the p + -doped semiconductor layer are made of the same material.