Finding the optimum Al-Ti alloy composition for use as an ohmic contact to p-type SiC

J. Crofton, S. E. Mohney, J. R. Williams, T. Isaacs-Smith

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Alloys of aluminum and titanium have been successfully used to form low resistance ohmic contacts to p-type SiC. While the 90 wt.% Al alloy has been studied extensively, the literature does not reveal any work which indicates whether the 90/10 or any other alloy composition is the best alloy for use as an ohmic contact material to p-SiC. This work systematically looks at four different Al-Ti alloy compositions in an attempt to decide which alloy if any is superior as an ohmic contact material. The alloy compositions that were studied were chosen by examining the binary Al-Ti phase diagram and choosing specific phases prior to reaction with the SiC. It will be shown that only alloys which have some amount of a liquid phase present at the anneal temperature will form an ohmic contact to p-type SiC.

Original languageEnglish (US)
Pages (from-to)109-113
Number of pages5
JournalSolid-State Electronics
Volume46
Issue number1
DOIs
StatePublished - Jan 1 2002

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Ohmic contacts
electric contacts
Chemical analysis
low resistance
Phase diagrams
liquid phases
titanium
Titanium
phase diagrams
aluminum
Aluminum
Liquids

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

Cite this

Crofton, J. ; Mohney, S. E. ; Williams, J. R. ; Isaacs-Smith, T. / Finding the optimum Al-Ti alloy composition for use as an ohmic contact to p-type SiC. In: Solid-State Electronics. 2002 ; Vol. 46, No. 1. pp. 109-113.
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Finding the optimum Al-Ti alloy composition for use as an ohmic contact to p-type SiC. / Crofton, J.; Mohney, S. E.; Williams, J. R.; Isaacs-Smith, T.

In: Solid-State Electronics, Vol. 46, No. 1, 01.01.2002, p. 109-113.

Research output: Contribution to journalArticle

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