Invention Grant
- Patent Title: Vertical field effect transistor with wrap around metallic bottom contact to improve contact resistance
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Application No.: US15148341Application Date: 2016-05-06
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Publication No.: US09773913B1Publication Date: 2017-09-26
- Inventor: Karthik Balakrishnan , Kangguo Cheng , Pouya Hashemi , Alexander Reznicek
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Ryan, Mason & Lewis, LLP
- Agent Louis J. Percello
- Main IPC: H01L29/78
- IPC: H01L29/78 ; H01L29/786 ; H01L29/423 ; H01L29/66 ; H01L21/285

Abstract:
Semiconductor devices having vertical field effect transistor (FET) devices with reduced contact resistance are provided, as well as methods for fabricating vertical FET devices with reduced contact resistance. For example, a semiconductor device includes a vertical FET device formed on a substrate. The vertical FET comprises a lower source/drain region disposed on the substrate. The lower source/drain region comprises an upper surface, sidewall surfaces, and a bottom surface, wherein the bottom surface of the lower source/drain region contacts the substrate. A lower metallic contact is disposed adjacent to, and in contact with, at least one sidewall surface of the lower source/drain region, wherein the lower metallic contact comprises a laterally extended portion which laterally extends from the at least one sidewall surface of the lower source/drain region. A vertical source/drain contact is disposed adjacent to the vertical FET device and contacts the laterally extended portion of the lower metallic contact.
Information query
IPC分类: