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Thermal properties of ultrathin hafnium oxide gate dielectric films

  • Matthew A. Panzer
  • , Michael Shandalov
  • , Jeremy A. Rowlette
  • , Yasuhiro Oshima
  • , Yi Wei Chen
  • , Paul C. McIntyre
  • , Kenneth E. Goodson

Research output: Contribution to journalArticlepeer-review

168 Scopus citations

Abstract

Thin-film HfO2 is a promising gate dielectric material that will influence thermal conduction in modern transistors. This letter reports the temperature dependence of the intrinsic thermal conductivity and interface resistances of 56200- Å-thick HfO2 films. A picosecond pumpprobe thermoreflectance technique yields room-temperature intrinsic thermal conductivity values between 0.49 and 0.95 W/mK). The intrinsic thermal conductivity and interface resistance depend strongly on the film-thickness-dependent microstructure.

Original languageEnglish
Article number5306179
Pages (from-to)1269-1271
Number of pages3
JournalIEEE Electron Device Letters
Volume30
Issue number12
DOIs
StatePublished - 1 Dec 2009
Externally publishedYes

Keywords

  • Hafnium oxide
  • Picosecond pump-probe thermometry
  • Thermal conductivity
  • Thermal interface resistance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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