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 language | English |
|---|---|
| Article number | 5306179 |
| Pages (from-to) | 1269-1271 |
| Number of pages | 3 |
| Journal | IEEE Electron Device Letters |
| Volume | 30 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2009 |
| Externally published | Yes |
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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