Patent ID: 11967636
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 13:
14. A method of forming a structure for a bipolar junction transistor, the method comprising:
forming a base layer;
forming a first terminal including a first raised semiconductor layer and a second terminal including a second raised semiconductor layer, wherein the base layer is positioned laterally between the first raised semiconductor layer and the second raised semiconductor layer; and
forming a first spacer laterally positioned between the first raised semiconductor layer and the base layer, wherein the first spacer comprises a first dielectric material and a first airgap surrounded by the first dielectric material,
wherein the first terminal is an emitter of the bipolar junction transistor and the second terminal is a collector of the bipolar junction transistor, or
wherein the first terminal is the collector of the bipolar junction transistor and the second terminal is the emitter of the bipolar junction transistor.