发明授权
US07691717B2 Polysilicon containing resistor with enhanced sheet resistance precision and method for fabrication thereof
失效
具有增强的薄层电阻精度的含多晶硅的电阻器及其制造方法
- 专利标题: Polysilicon containing resistor with enhanced sheet resistance precision and method for fabrication thereof
- 专利标题(中): 具有增强的薄层电阻精度的含多晶硅的电阻器及其制造方法
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申请号: US11458494申请日: 2006-07-19
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公开(公告)号: US07691717B2公开(公告)日: 2010-04-06
- 发明人: Anil K. Chinthakindi , Douglas D. Coolbaugh , Ebenezer E. Eshun , John E. Florkey , Robert M. Rassel , Kunal Vaed
- 申请人: Anil K. Chinthakindi , Douglas D. Coolbaugh , Ebenezer E. Eshun , John E. Florkey , Robert M. Rassel , Kunal Vaed
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Scully, Scott, Murphy & Presser, P.C.
- 代理商 Joseph P. Abate, Esq.
- 主分类号: H01L21/20
- IPC分类号: H01L21/20
摘要:
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.
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