Patent ID: 11973138
Assignee: TRANSPHORM TECHNOLOGY, INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 15:
16. A III-N device, comprising:
a substrate;
a III-N layer structure on the substrate, the III-N layer structure including
a buffer layer,
a first III-N channel layer between a first III-N barrier layer and a first p-type III-N depleting layer, wherein the first III-N channel layer includes a first 2DEG channel formed therein,
a second III-N barrier layer between a second III-N channel layer and a second p-type III-N depleting layer, wherein the second III-N channel layer includes a second 2DEG channel formed therein with the second 2DEG channel being between the first 2DEG channel and the substrate, and wherein the second p-type III-N depleting layer is formed between the buffer layer and the second III-N barrier layer;

a source electrode and a drain electrode, each of which being electrically connected to the first 2DEG channel and the second 2DEG channel; and
a gate electrode between the source electrode and the drain electrode, the gate electrode being over the III-N layer structure, wherein the first p-type III-N depleting layer and the second p-type III-N depleting layer are electrically connected to the gate electrode;
wherein a dopant concentration in the first p-type III-N depleting layer is such that an areal p-type doping density in the first p-type III-N depleting layer is in the range of 10-150% of an areal sheet charge density of mobile charge in the first 2DEG channel.