Invention Grant
- Patent Title: Method for fabricating a DRAM capacitor having increased thermal and chemical stability
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Application No.: US13738855Application Date: 2013-01-10
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Publication No.: US08542523B2Publication Date: 2013-09-24
- Inventor: Karthik Ramani , Wim Y. Deweerd , Hiroyuki Ode
- Applicant: Intermolecular Inc.
- Applicant Address: US CA San Jose JP Tokyo
- Assignee: Intermolecular, Inc.,Elpida Memory, Inc.
- Current Assignee: Intermolecular, Inc.,Elpida Memory, Inc.
- Current Assignee Address: US CA San Jose JP Tokyo
- Main IPC: G11C11/00
- IPC: G11C11/00

Abstract:
A method for fabricating a dynamic random access memory (DRAM) capacitor includes forming a first electrode film. The first electrode film comprises a conductive binary metal compound and a dopant. The dopant may have a uniform or non-uniform concentration within the first electrode film. A high-k dielectric film is formed over the first electrode film. A second electrode film is formed over the dielectric film. The second electrode film comprises a conductive binary metal compound and a dopant. The dopant may have a uniform or non-uniform concentration within the second electrode film. The dopants and their distribution are chosen so that the crystal structure of the surface of the electrode is not degraded if the electrode is to be used as a templating structure for subsequent layer formation. Additionally, the dopants and their distribution are chosen so that the work function of the electrodes is not degraded.
Public/Granted literature
- US20130119515A1 METHOD FOR FABRICATING A DRAM CAPACITOR HAVING INCREASED THERMAL AND CHEMICAL STABILITY Public/Granted day:2013-05-16
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