GaN-on-Si mm-wave RF devices integrated in a 200mm CMOS Compatible 3-Level Cu BEOL

  • B. Parvais
  • , A. Alian
  • , U. Peralagu
  • , R. Rodriguez
  • , S. Yadav
  • , A. Khaled
  • , R. Y. Elkashlan
  • , V. Putcha
  • , A. Sibaja-Hernandez
  • , M. Zhao
  • , P. Wambacq
  • , N. Collaert
  • , N. Waldron

Research output: Chapter in Book/Report/Conference proceedingsChapterpeer-review

Abstract

We report on the development of mm-wave GaN-on-Si AlGaN HEMTs integrated with a 3 level Cu damascene BEOL flow on 200mm Si <111> wafers. Optimizations of the gate metal stack, contact resistance and gate length scaling to 110nm result in devices with a peak gm of 430 mS/mm and an fMAX of 135 GHz. While wafer warp was found to increase slightly through the processing of 3 levels of 1μm thick Cu metal, no significant deterioration was observed between devices measured at Metal 1 and Metal 3.

Original languageEnglish
Title of host publication2020 IEEE International Electron Devices Meeting, IEDM 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages8.1.1-8.1.4
ISBN (Electronic)9781728188881
DOIs
Publication statusPublished - 12 Dec 2020
Externally publishedYes
Event66th Annual IEEE International Electron Devices Meeting, IEDM 2020 - Virtual, San Francisco, United States
Duration: 12 Dec 202018 Dec 2020

Publication series

NameTechnical Digest - International Electron Devices Meeting, IEDM
Volume2020-December
ISSN (Print)0163-1918

Conference

Conference66th Annual IEEE International Electron Devices Meeting, IEDM 2020
Country/TerritoryUnited States
CityVirtual, San Francisco
Period12/12/2018/12/20

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