Patent ID: 11417779

Abstract:
The disclosure is applicable for the technical field of semiconductor devices manufacturing, and provides a gallium oxide SBD terminal structure. The gallium oxide SBD terminal structure comprises a cathode metal layer, an N+ high-concentration substrate layer, an N− low-concentration Ga2O3 epitaxial layer and an anode metal layer from bottom to top, wherein the N− low-concentration Ga2O3 epitaxial layer is within a range of certain thickness close to the anode metal layer; and a doping concentration below the anode metal layer is greater than a doping concentration on two sides of the anode metal layer. Namely, only a doping concentration of the part outside the corresponding area of the anode metal layer is changed, so that the breakdown voltage of the gallium oxide SBD terminal structure is improved under the condition of guaranteeing low on resistance.