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Formation of a p-n junction in silicon carbide by aluminum doping at room temperature using a pulsed laser doping method

  • Osamu Eryu
  • , Yasuo Okuyama
  • , Kenshiro Nakashima
  • , Toshitake Nakata
  • , Masanori Watanabe

Research output: Contribution to journalArticlepeer-review

Abstract

A p-n junction has been formed in n-type silicon carbide (6H-SiC) by aluminum (Al) doping at room temperature using a pulsed laser doping method. A 6H-SiC substrate in [H2+(CH3)3Al] atmosphere was irradiated by an KrF excimer laser of 20 ns full width at half-maximum. The depth profile of Al determined by secondary ion mass spectroscopy showed a rectangularlike shape with a maximum concentration of 1×1022 Al/cm3. Furthermore, Al atoms were doped to a depth of about 0.05 μm from the surface. The current-voltage characteristics of the p-n junction clearly showed the rectifying property with low leakage current.

Original languageEnglish
Pages (from-to)2052
Number of pages1
JournalApplied Physics Letters
Volume67
DOIs
Publication statusPublished - 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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