Patent ID: 9305772
Filing Date: 2016-04-05
CPC Classification: C23C,H01L

Claim Text:
1. An electronic device comprising a substrate of Ga 1-x1-y1 Al x1 In y1 N (0≦x1≦1, 0≦y1≦1), an active layer of Ga 1-x2-y2 Al x2 In y2 N (0≦x2≦1, 0≦y2≦1) on a first side of the substrate, a back ohmic contact on a second side opposite to the first side of the substrate, and a depletion region having a depth in the active layer, wherein; (a) the substrate has a dislocation density of less than 10 (b) the substrate has an electron concentration or an oxygen concentration greater than 10 (c) the active layer has an electron concentration or an oxygen concentration less than 10 (d) the depletion region does not extend into the substrate for any applied voltage within an operation range of the device, and the depletion region has a Schottky contact or a metal-insulator-semiconductor structure associated with the depletion region; (e) a current blocking layer between the substrate and the active layer, wherein the current blocking layer has an opening for an electrical current; (f) a front ohmic contact adjacent to the Schottky contact or the metal-insulator-semiconductor structure; and wherein the front ohmic contact and the Schottky contact or the metal-insulator-semiconductor structure are positioned to regulate an electric current through the front ohmic contact to the back ohmic contact with a voltage applied across the front ohmic contact and the Schottky contact or the metal-insulator-semiconductor structure.