SEMICONDUCTOR DEVICE AND METHOD FOR FORMING P-TYPE CONDUCTIVE CHANNEL IN DIAMOND USING ABRUPT HETEROJUNCTION

The present application discloses a semiconductor device and a method for forming a p-type conductive channel in a diamond using an abrupt heterojunction, which pertain to the technical field of fabrication of semiconductor devices. The method includes: forming a diamond layer on a substrate; forming one or multiple layers of a heterogeneous elementary substance or compound having an acceptor characteristic on an upper surface of the diamond layer; forming a heterojunction at an interface between the diamond layer and an acceptor layer; forming two-dimensional hole gas at one side of the diamond layer with a distance of 10 nm-20 nm away from the heterojunction; and using the two-dimensional hole gas as a p-type conductive channel. The method enables a concentration and a mobility of carriers to maintain stable at a temperature range of 0° C.-1000° C., thereby realizing normal operation of the diamond device at high temperature environment.