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Challenges on surface conditioning in 3D device architectures: Triple-gate finfets, gate-all-around lateral and vertical nanowire FETs

  • A. Veloso
  • , V. Paraschiv
  • , E. Vecchio
  • , K. Devriendt
  • , W. Li
  • , E. Simoen
  • , B. T. Chan
  • , Z. Tao
  • , E. Rosseel
  • , R. Loo
  • , A. P. Milenin
  • , B. Kunert
  • , L. Teugels
  • , F. Sebaai
  • , C. Lorant
  • , D. Van Dorp
  • , E. Altamirano-Sánchez
  • , S. Brus
  • , P. Marien
  • , C. Fleischmann
  • D. Melkonyan, T. Huynh-Bao, G. Eneman, G. Hellings, A. Sibaja-Hernandez, P. Matagne, N. Waldron, D. Mocuta, N. Collaert
  • Interuniversitair Micro-Elektronica Centrum

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

Abstract

This work reports on some key integration aspects for 3D devices fabrication, focusing first on the impact of thermal and plasma treatments at gate module for triple-gate finFETs and their ultimate scaling limit: gate-all-around (GAA) nanowire (NW) FETs, which can be implemented in a lateral (with one or more lateral wires vertically stacked) or vertical configuration. The selected doping schemes and gate metals can also be powerful knobs to engineer the interface properties. In addition, specific steps for lateral NWFETs, such as the wires release process, will be addressed here. Vertical NWFETs, corresponding to the move from a 2D to a 3D CMOS layout, have the potential for lower parasitics, reduced power consumption and for enabling smaller, higher performing SRAM bitcells. We will present here alternative, novel approaches for building and characterizing these devices, focusing on channelfirst schemes with improved process control, while tackling critical etch-layout dependences.

Original languageEnglish
Title of host publicationECS Transactions
EditorsTakeshi Hattori, Anthony J. Muscat, Koichiro Saga, Paul Mertens, Richard E. Novak, Jerzy Ruzyllo
PublisherElectrochemical Society Inc.
Pages3-20
Number of pages18
Edition2
ISBN (Electronic)9781607688198
ISBN (Print)9781623324711
DOIs
Publication statusPublished - 2017
Externally publishedYes
Event15th International Symposium on Semiconductor Cleaning Science and Technology, SCST 2017 - 232nd ECS Meeting - National Harbor, United States
Duration: 2 Oct 20173 Oct 2017

Publication series

NameECS Transactions
Number2
Volume80
ISSN (Print)1938-6737
ISSN (Electronic)1938-5862

Conference

Conference15th International Symposium on Semiconductor Cleaning Science and Technology, SCST 2017 - 232nd ECS Meeting
Country/TerritoryUnited States
CityNational Harbor
Period2/10/173/10/17

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