Patent ID: 11916130
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method of forming a lateral bipolar junction transistor (LBJT) comprising:
forming a fin structure from a type IV semiconductor on insulator layer that is present over a buried dielectric layer, wherein the buried dielectric layer is present on a type IV base substrate layer;
forming a first type III-V semiconductor material layer on sidewalls of the fin structure from the type IV semiconductor on insulator layer;
removing the fin structure;
patterning the first type III-V semiconductor material layer into a base region atop a pedestal of the buried dielectric layer;
forming a first dielectric spacer on the buried dielectric layer underlying a first face of the base region;
forming an emitter type III-V semiconductor material that is epitaxially grown from a first sidewall on the first face of the base region, and the emitter type III-V semiconductor material is grown onto the first dielectric spacer;
forming a second dielectric spacer on the buried dielectric layer underlying a second face of the base region; and
forming a collector type III-V semiconductor material that is epitaxially grown from a second sidewall of the second face of the base region, and the collector type III-V semiconductor material is grown onto the second dielectric spacer, wherein the emitter type III-V semiconductor material and collector type III-V semiconductor material being epitaxial materials having a crystalline characteristics substantially matching the base region, and an epitaxial relationship is not present between either of the emitter type III-V semiconductor material and the collector type III-V semiconductor material and the first and second dielectric spacer.