Patent ID: 11949004
Assignee: GLOBALFOUNDRIES U.S. INC.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A structure comprising:
an extrinsic base region comprising semiconductor material of a first dopant type;
an intrinsic base region of undoped semiconductor material between the extrinsic base and a gate structure;
a raised emitter region comprising epitaxial semiconductor material above a first side of the extrinsic base region;
a raised collector region comprising the epitaxial semiconductor material above a second side of the extrinsic base region;
the gate structure aligned with and contacting the intrinsic base region, and comprising a gate dielectric material contacting the intrinsic base region, a gate control and sidewall spacers extending along a sidewall of the gate control, the gate dielectric material, the gate control and the extrinsic base region being in alignment with one another, and the sidewall spacers isolating the gate structure from the raised emitter region and the raised collector region;
an extrinsic base contact comprising the semiconductor material of the first dopant type, and separated from the raised emitter region, the raised collector region and the gate structure by insulator material; and
the insulator material in a cavity of the semiconductor material part of which comprises the extrinsic base region and the intrinsic base region, the insulator material surrounding the extrinsic base region and underneath both the raised emitter region and the raised collector region.