Low temperature MOSFET technology with Schottky barrier source/drain, high-K gate dielectrics and metal gate electrode

  • Shiyang Zhu
  • , Shen Chen
  • , Zhu Chunxiang
  • , H. Y. Yu
  • , S. J. Whang
  • , J. H. Chen
  • , S. J. Lee
  • , M. F. Li
  • , D. S.H. Chan
  • , W. J. Yoo
  • , Anyan Du
  • , C. H. Tung
  • , Jagar Singh
  • , Albert Chin
  • , D. L. Kwong

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    Introduction Future CMOS devices require metal-gatehigh-K gate stacks, advanced sourceidrain engineering, and the use of UTB-SO1 [1-3]. The series resistance of shallow sourceidrain junction is a serious issue for future scaling, and Schottky barrier SiD (SSD) structure has been suggested as a potential solution [4-7]. MOSFETs with SSD (SSDT) have been reported using SiO22/ poly-Si gate stack [8]. However, SSDT is particularly attractive for metal gate/high-K gate stack as it avoids the use of high temperature annealing process required for implanted S/D junctions, hence eliminating the thermal stability issues associated with high-K gate stack [9]. In this work, we successfully demonstrate bulk SSDTs with CVD Hf02 high-K dielectric, PVD HfN/TaN metal gate and P'tSi (for PMOS) and DySi2-x(for NMOS) silicide source/drain using a low temperature process. The highest temperature is 420°C after high-K gate stack formation. The process can be easily extended to UTB-SOI structures.

    Original languageEnglish
    Title of host publication2003 International Semiconductor Device Research Symposium, ISDRS 2003 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages254-255
    Number of pages2
    ISBN (Electronic)0780381394, 9780780381391
    DOIs
    StatePublished - 2003
    EventInternational Semiconductor Device Research Symposium, ISDRS 2003 - Washington, United States
    Duration: 10 Dec 200312 Dec 2003

    Publication series

    Name2003 International Semiconductor Device Research Symposium, ISDRS 2003 - Proceedings

    Conference

    ConferenceInternational Semiconductor Device Research Symposium, ISDRS 2003
    Country/TerritoryUnited States
    CityWashington
    Period10/12/0312/12/03

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