Abstract: A lateral silicon carbide power semiconductor device is disclosed. The device comprises a substrate and a silicon carbide semiconductor structure disposed on the substrate and having a principal surface. The semiconductor structure comprises a layer of first conductivity type disposed on the substrate, and a layer-shaped drift region of a second conductivity type, which is opposite to the first conductivity type, disposed directly on the layer so as to form an interface between the layer and the drift region. The drift region runs laterally along the principal surface between first and second ends. Doping in the drift region and the layer are arranged so as to deplete the drift region. The device comprises a first contact region to the drift region.

Abstract: A power semiconductor device is described. The device comprises a silicon carbide substrate and a layer of monocrystalline silicon having a thickness tSi no more than 5 ?m disposed directly on the substrate or directly on an interfacial layer having a thickness no more than 100 nm which is disposed directly on the substrate. The device comprises a lateral transistor, such as a laterally-diffused metal oxide semiconductor transistor or lateral insulated gate bipolar transistor, comprising first and second contacts laterally-spaced contact regions disposed in the monocrystalline silicon layer.