Atomic layer deposition of HfO2 on III-V semiconductors - An interfacial chemistry perspective

  • Wilfredo Cabrera
  • , Hong Dong
  • , Barry Brennan
  • , Éamon O'Connor
  • , Patrick Carolan
  • , Rohit Galatage
  • , Scott Monaghan
  • , Ian Povey
  • , Paul K. Hurley
  • , Christopher L. Hinkle
  • , Yves Chabal
  • , Robert M. Wallace

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

Abstract

The atomic layer deposition (ALD) of HfO2 on various III-V semiconductor materials is discussed in detail, with particular emphasis on the interaction between the HfO2 and the residual native oxide present at the interface. This interface is of critical importance in terms of device performance, impacting on the interfacial trap density which can lead to Fermi level pinning. Changes in the interfacial chemistry between ALD HfO2 and GaAs, InGaAs and InP are discussed in terms of changes to the composition of the native oxide upon interaction with the ALD precursors, as well as the potential for migration of substrate materials into the high-k oxide layer.

Original languageEnglish
Title of host publicationTechnical Proceedings of the 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
Pages1-4
Number of pages4
Publication statusPublished - 2013
EventNanotechnology 2013: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013 - Washington, DC, United States
Duration: 12 May 201316 May 2013

Publication series

NameTechnical Proceedings of the 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
Volume2

Conference

ConferenceNanotechnology 2013: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational - 2013 NSTI Nanotechnology Conference and Expo, NSTI-Nanotech 2013
Country/TerritoryUnited States
CityWashington, DC
Period12/05/1316/05/13

Keywords

  • ALD
  • Hfo
  • III-V semiconductor
  • InGaAs
  • InP

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