Invention Grant
US07884002B2 Method of fabricating self aligned Schottky junctions for semiconductor devices 有权
制造用于半导体器件的自对准肖特基结的方法

  • Patent Title: Method of fabricating self aligned Schottky junctions for semiconductor devices
  • Patent Title (中): 制造用于半导体器件的自对准肖特基结的方法
  • Application No.: US12095144
    Application Date: 2006-11-27
  • Publication No.: US07884002B2
    Publication Date: 2011-02-08
  • Inventor: Markus Muller
  • Applicant: Markus Muller
  • Applicant Address: NL Eindhoven
  • Assignee: NXP B.V.
  • Current Assignee: NXP B.V.
  • Current Assignee Address: NL Eindhoven
  • Priority: EP05300971 20051128
  • International Application: PCT/IB2006/054446 WO 20061127
  • International Announcement: WO2007/060641 WO 20070531
  • Main IPC: H01L21/28
  • IPC: H01L21/28 H01L21/8238 H01L21/4763 H01L21/44
Method of fabricating self aligned Schottky junctions for semiconductor devices
Abstract:
A method of fabricating a self-aligned Schottky junction (29) in respect of a semiconductor device. After gate etching and spacer formation, a recess defining the junction regions is formed in the Silicon substrate (10) and a SiGe layer (22) is selectively grown therein. A dielectric layer (24) is then provided over the gate (14) and the SiGe layer (22), a contact etch is performed to form contact holes (26) and the SiGe material (22) is then removed to create cavities (28) in the junction regions. Finally the cavities (28) are filled with metal to form the junction (29). Thus, a process is provided for self-aligned fabrication of a Schottky junction having relatively low resistivity, wherein the shape and position of the junction can be well controlled.
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