Integration of InGaAs channel n-MOS devices on 200mm Si wafers using the aspect-ratio-trapping technique

  • Niamh Waldron
  • , Gang Wang
  • , Ngoc Duy Nguyen
  • , Tommaso Orzali
  • , Clement Merckling
  • , Guy Brammertz
  • , Patrick Ong
  • , Gillis Winderickx
  • , Geert Hellings
  • , Geert Eneman
  • , Matty Caymax
  • , Marc Meuris
  • , Naoto Horiguchi
  • , Aaron Thean

Research output: Chapter in Book/Report/Conference proceedingsConference proceedingpeer-review

Abstract

We report on the fabrication on InGaAs/InP implant free quantum well (IFQW) n-MOSFET devices on 200mm wafers in a Si CMOS processing environment. The starting virtual InP substrates were prepared by means of the aspect-ratio-trapping technique. Post CMP these substrate resulted in a planar substrate with a rms roughness of 0.32 nm. After channel and gate processing source drain regions were formed by the selective epitaxial growth of Si doped InGaAs. Contact to the source/drain regions was made by a standard W-plug/metal 1 process. The contact resistance was estimated to be on the order of 7×10-7 Ω.cm2. Fully processed devices clearly showed gate modulation albeit on top of high levels of source to drain leakage. The source of this leakage was determined to be the result of the unintentional background doping of the InP buffer layer. Simulations show that the inclusion of the p-InAlAs between the InP and InGaAs can effectively suppress this leakage. This development is a significant step towards the integration of InGaAs based devices on a standard CMOS platform.

Original languageEnglish
Title of host publicationGraphene, Ge/III-V, Nanowires, and Emerging Materials for Post-CMOS Applications 4
PublisherElectrochemical Society Inc.
Pages115-128
Number of pages14
Edition4
ISBN (Electronic)9781607683148
ISBN (Print)9781566779562
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event4th International Symposium on Graphene, Ge/III-V and Emerging Materials for Post-CMOS Applications - 221st ECS Meeting - Seattle, WA, United States
Duration: 6 May 201210 May 2012

Publication series

NameECS Transactions
Number4
Volume45
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

Conference4th International Symposium on Graphene, Ge/III-V and Emerging Materials for Post-CMOS Applications - 221st ECS Meeting
Country/TerritoryUnited States
CitySeattle, WA
Period6/05/1210/05/12

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