Patent ID: 9397203
Filing Date: 2016-07-19
CPC Classification: H01L

Claim Text:
1. A device structure for a bipolar junction transistor fabricated using a device layer of a semiconductor-on-insulator wafer, the device structure comprising: a first terminal comprised of a section of the device layer, the section of the device layer having a sidewall; an intrinsic base coextensive with the sidewall of the section of the device layer, the intrinsic base comprised of a first section of a first semiconductor layer having an epitaxial relationship with the section of the device layer and defining a first junction with the section of the device layer; a second terminal coextensive with the intrinsic base, the second terminal comprised of a second semiconductor layer defining a second junction with the first section of the first semiconductor layer; a first dielectric layer on a top surface of the device layer; and an extrinsic base comprised of a third semiconductor layer on the first dielectric layer, the extrinsic base isolated from the device layer by the first dielectric layer, and wherein the first semiconductor layer has a second section that is integral with the first section and the second section extends across the first dielectric layer to couple the first section of the first semiconductor layer with the third semiconductor layer.