Invention Grant
- Patent Title: Germanium-containing release layer for transfer of a silicon layer to a substrate
- Patent Title (中): 含锗释放层,用于将硅层转移到基底
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Application No.: US13616322Application Date: 2012-09-14
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Publication No.: US08933456B2Publication Date: 2015-01-13
- Inventor: Stephen W. Bedell , Keith E. Fogel , Daniel A. Inns , Jeehwan Kim , Devendra K. Sadana , Katherine L. Saenger
- Applicant: Stephen W. Bedell , Keith E. Fogel , Daniel A. Inns , Jeehwan Kim , Devendra K. Sadana , Katherine L. Saenger
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Catherine Ivers, Esq.
- Main IPC: H01L29/38
- IPC: H01L29/38 ; H01L21/02 ; H01L21/762

Abstract:
A germanium-containing layer is deposited on a single crystalline bulk silicon substrate in an ambient including a level of oxygen partial pressure sufficient to incorporate 1%-50% of oxygen in atomic concentration. The thickness of the germanium-containing layer is preferably limited to maintain some degree of epitaxial alignment with the underlying silicon substrate. Optionally, a graded germanium-containing layer can be grown on, or replace, the germanium-containing layer. An at least partially crystalline silicon layer is subsequently deposited on the germanium-containing layer. A handle substrate is bonded to the at least partially crystalline silicon layer. The assembly of the bulk silicon substrate, the germanium-containing layer, the at least partially crystalline silicon layer, and the handle substrate is cleaved within the germanium-containing layer to provide a composite substrate including the handle substrate and the at least partially crystalline silicon layer. Any remaining germanium-containing layer on the composite substrate is removed.
Public/Granted literature
- US20130015455A1 GERMANIUM-CONTAINING RELEASE LAYER FOR TRANSFER OF A SILICON LAYER TO A SUBSTRATE Public/Granted day:2013-01-17
Information query
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