Paper Title:
Significant Improvement in Reliability of Thermal Oxide on 4H-SiC (0001) Face Using Ammonia Post-Oxidation Annealing
  Abstract

The effect of ammonia (NH3) post-oxidation annealing (POA) technique on the reliability of thermal oxides grown on a n-type 4H-SiC (0001) face by dry oxidation has been investigated. Comparing other POA techniques using hydrogen and nitrous oxide gases, it was indicated that the NH3 POA after dry oxidation remarkably improves the insulating properties of thermal oxides. The mode value of field-to-breakdown for thermal oxides prepared by NH3 POA was 12.1 MV/cm. The charge-to-breakdown (QBD) in the NH3 POA sample was the highest in all samples, and the QBD value at 63% cumulative failure rate was 19.1 C/cm2. In addition, the NH3 POA maintained excellent electron trapping characteristics of thermal oxides against the electron injection.

  Info
Periodical
Materials Science Forum (Volumes 645-648)
Edited by
Anton J. Bauer, Peter Friedrichs, Michael Krieger, Gerhard Pensl, Roland Rupp and Thomas Seyller
Pages
685-688
DOI
10.4028/www.scientific.net/MSF.645-648.685
Citation
J. Senzaki, T. Suzuki, A. Shimozato, K. Fukuda, K. Arai, H. Okumura, "Significant Improvement in Reliability of Thermal Oxide on 4H-SiC (0001) Face Using Ammonia Post-Oxidation Annealing", Materials Science Forum, Vols. 645-648, pp. 685-688, 2010
Online since
April 2010
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$32.00
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