发明申请
US20070015330A1 Metal/semiconductor/metal (MSM) back-to-back Schottky diode
有权
金属/半导体/金属(MSM)背对背肖特基二极管
- 专利标题: Metal/semiconductor/metal (MSM) back-to-back Schottky diode
- 专利标题(中): 金属/半导体/金属(MSM)背对背肖特基二极管
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申请号: US11435669申请日: 2006-05-17
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公开(公告)号: US20070015330A1公开(公告)日: 2007-01-18
- 发明人: Tingkai Li , Sheng Hsu , David Evans
- 申请人: Tingkai Li , Sheng Hsu , David Evans
- 专利权人: Sharp Laboratories of America, Inc.
- 当前专利权人: Sharp Laboratories of America, Inc.
- 主分类号: H01L21/8242
- IPC分类号: H01L21/8242
摘要:
A method is provided for forming a metal/semiconductor/metal (MSM) back-to-back Schottky diode from a silicon (Si) semiconductor. The method deposits a Si semiconductor layer between a bottom electrode and a top electrode, and forms a MSM diode having a threshold voltage, breakdown voltage, and on/off current ratio. The method is able to modify the threshold voltage, breakdown voltage, and on/off current ratio of the MSM diode in response to controlling the Si semiconductor layer thickness. Generally, both the threshold and breakdown voltage are increased in response to increasing the Si thickness. With respect to the on/off current ratio, there is an optimal thickness. The method is able to form an amorphous Si (a-Si) and polycrystalline Si (polySi) semiconductor layer using either chemical vapor deposition (CVD) or DC sputtering. The Si semiconductor can be doped with a Group V donor material, which decreases the threshold voltage and increases the breakdown voltage.
公开/授权文献
- US07446010B2 Metal/semiconductor/metal (MSM) back-to-back Schottky diode 公开/授权日:2008-11-04
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