Strained germanium gate-all-around PMOS device demonstration using selective wire release etch prior to replacement metal gate deposition

  • L. Witters
  • , F. Sebaai
  • , A. Hikavyy
  • , A. P. Milenin
  • , R. Loo
  • , A. De Keersgieter
  • , G. Eneman
  • , T. Schram
  • , K. Wostyn
  • , K. Devriendt
  • , A. Schulze
  • , R. Lieten
  • , S. Bilodeau
  • , E. Cooper
  • , P. Storck
  • , C. Vrancken
  • , H. Arimura
  • , P. Favia
  • , E. Vancoille
  • , J. Mitard
  • R. Langer, A. Opdebeeck, F. Holsteyns, N. Waldron, K. Barla, V. De Heyn, D. Mocuta, N. Collaert

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

Abstract

Strained Ge p-channel Gate-All-Around (GAA) FETs are demonstrated on 300mm SiGe Strain Relaxed Buffer (SRB) and 45nm Fin pitch with the shortest gate lengths (Lg=40nm) and smallest Ge nanowire (NW) diameter (d=9nm) reported to date. Optimization of groundplane doping (GP) is required to minimize the impact of the parasitic channel in the SRB. The strained Ge GAA devices maintain excellent electrostatic control at the shortest gate lengths studied (Lg=40nm) with DIBL of 30mV/V and sub-threshold slope (SSsat) of 79mV/dec. This work shows a significant improvement not only compared to our previous work on strained Ge finFETs but also when benchmarked to published Ge GAA devices.

Original languageEnglish
Title of host publication2017 Symposium on VLSI Technology, VLSI Technology 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
PagesT194-T195
ISBN (Electronic)9784863486058
DOIs
Publication statusPublished - 31 Jul 2017
Externally publishedYes
Event37th Symposium on VLSI Technology, VLSI Technology 2017 - Kyoto, Japan
Duration: 5 Jun 20178 Jun 2017

Publication series

NameDigest of Technical Papers - Symposium on VLSI Technology
ISSN (Print)0743-1562

Conference

Conference37th Symposium on VLSI Technology, VLSI Technology 2017
Country/TerritoryJapan
CityKyoto
Period5/06/178/06/17

Keywords

  • gate-all-around
  • groundplane doping
  • nanowire
  • strain relaxed buffer
  • strained germanium

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