Invention Application
- Patent Title: POLYSILICON CONTAINING RESISTOR WITH ENHANCED SHEET RESISTANCE PRECISION AND METHOD FOR FABRICATION THEREOF
- Patent Title (中): 具有增强型电阻精度的多晶硅电容器及其制造方法
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Application No.: US11458494Application Date: 2006-07-19
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Publication No.: US20080122574A1Publication Date: 2008-05-29
- Inventor: Anil K. Chinthakindi , Douglas D. Coolbaugh , Ebenezer E. Eshun , John E. Florkey , Robert M. Rassel , Kunal Vaed
- Applicant: Anil K. Chinthakindi , Douglas D. Coolbaugh , Ebenezer E. Eshun , John E. Florkey , Robert M. Rassel , Kunal Vaed
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Main IPC: H01C1/06
- IPC: H01C1/06 ; H01L21/20

Abstract:
A polysilicon containing resistor includes: (1) a p dopant selected from the group consisting of boron and boron difluoride; and (2) an n dopant selected from the group consisting of arsenic and phosphorus. Each of the p dopant and the n dopant has a dopant concentration from about 1e18 to about 1e21 dopant atoms per cubic centimeter. A method for forming the polysilicon resistor uses corresponding implant doses from about 1e14 to about 1e16 dopant ions per square centimeter. The p dopant and the n dopant may be provided simultaneously or sequentially. The method provides certain polysilicon resistors with a sheet resistance percentage standard deviation of less than about 1.5%, for a polysilicon resistor having a sheet resistance from about 100 to about 5000 ohms per square.
Public/Granted literature
- US07691717B2 Polysilicon containing resistor with enhanced sheet resistance precision and method for fabrication thereof Public/Granted day:2010-04-06
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