Invention Grant
- Patent Title: Method to control metal semiconductor micro-structure
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Application No.: US13006664Application Date: 2011-01-14
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Publication No.: US08456011B2Publication Date: 2013-06-04
- Inventor: Christian Lavoie , Ahmet S. Ozcan , Zhen Zhang , Bin Yang
- Applicant: Christian Lavoie , Ahmet S. Ozcan , Zhen Zhang , Bin Yang
- Applicant Address: US NY Armonk KY Grand Cayman
- Assignee: International Business Machines Corporation,Globalfoundries Inc.
- Current Assignee: International Business Machines Corporation,Globalfoundries Inc.
- Current Assignee Address: US NY Armonk KY Grand Cayman
- Agency: Scully, Scott, Murphy & Presser, P.C.
- Agent Yuanmin Cal
- Main IPC: H01L23/532
- IPC: H01L23/532

Abstract:
A method of forming a metal semiconductor alloy that includes forming an intermixed metal semiconductor region to a first depth of a semiconductor substrate without thermal diffusion. The intermixed metal semiconductor region is annealed to form a textured metal semiconductor alloy. A second metal layer is formed on the textured metal semiconductor alloy. The second metal layer on the textured metal semiconductor alloy is then annealed to form a metal semiconductor alloy contact, in which metal elements from the second metal layer are diffused through the textured metal semiconductor alloy to provide a templated metal semiconductor alloy. The templated metal semiconductor alloy includes a grain size that is greater than 2× for the metal semiconductor alloy, which has a thickness ranging from 15 nm to 50 nm.
Public/Granted literature
- US20120181697A1 METHOD TO CONTROL METAL SEMICONDUCTOR MICRO-STRUCTURE Public/Granted day:2012-07-19
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