Invention Grant
- Patent Title: Enhanced work function layer supporting growth of rutile phase titanium oxide
- Patent Title (中): 增强功能层支持金红石相氧化钛的生长
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Application No.: US13708035Application Date: 2012-12-07
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Publication No.: US08975147B2Publication Date: 2015-03-10
- Inventor: Xiangxin Rui , Hanhong Chen , Pragati Kumar , Sandra G. Malhotra
- 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: H01L21/02
- IPC: H01L21/02 ; C01G23/047 ; C23C16/02 ; C23C16/34 ; C23C16/40 ; C23C16/455 ; H01L49/02 ; H01L27/108 ; B82Y99/00

Abstract:
This disclosure provides a method of fabricating a semiconductor stack and associated device, such as a capacitor and DRAM cell. In particular, a bottom electrode has a material selected for lattice matching characteristics. This material may be created from a relatively inexpensive metal oxide which is processed to adopt a conductive, but difficult-to-produce oxide state, with specific crystalline form; to provide one example, specific materials are disclosed that are compatible with the growth of rutile phase titanium dioxide (TiO2) for use as a dielectric, thereby leading to predictable and reproducible higher dielectric constant and lower effective oxide thickness and, thus, greater part density at lower cost.
Public/Granted literature
- US20130095632A1 Enhanced Work Function Layer Supporting Growth of Rutile Phase Titanium Oxide Public/Granted day:2013-04-18
Information query
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