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A double-layer current conduction model for high-κ gate dielectric materials with interfacial oxide or silicate layer

  • V. Filip
  • , H. Wong
  • , B. Sen
  • , D. Nicolaescu
  • , C. K. Sarkar

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Abstract

The current-voltage (I-V) characteristics of metal-oxide-semiconductor (MOS) structures with hafnium oxide as the gate dielectric film were studied. Sharp shifts from a low-voltage ohmic regime to a tunneling conduction were observed in the high-voltage range. The paper demonstrates that this behavior can be described very well with a double-layer dielectric model. Excellent fittings of the experimental curves were obtained and the related key structural and physical parameters were obtained. The model fitting further suggests the optimal annealing conditions for preparing the hafnium oxide films. © 2006 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)1950-1956
JournalMicroelectronic Engineering
Volume83
Issue number10
DOIs
Publication statusPublished - Oct 2006

Research Keywords

  • Current conduction
  • Hafnium oxide
  • MOS structure

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