Patent ID: 9196716
Filing Date: 2015-11-24
Classification: H01L

Abstract:
1. A III-N semiconductor device comprising: a nitride channel layer including a first channel region beneath a gate, and channel access regions on opposite sides of the first channel region, the composition of the nitride channel layer being selected from the group consisting of nitrides of gallium, indium and aluminum, and combinations thereof; and an AlXN layer adjacent the channel layer in the areas adjacent to the channel access regions but not in the area adjacent to the first channel region, wherein X is selected from the group consisting of gallium, indium or their combination; wherein the concentration of Al and thickness of the AlXN layer is selected to induce a 2DEG charge in the channel access regions adjacent the AlXN layer without inducing any substantial 2DEG charge in the first channel region, so that a channel comprising the 2DEG charge is not conductive in the absence of a switching voltage applied to the gate, but is conductive when a switching voltage greater than a device threshold voltage is applied to the gate.