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Correlation of EBIC and SWBXT imaged defects and epilayer growth pits in 6H-SiC schottky diodes

  • C. M. Schnabel
  • , M. Tabib-Azar
  • , P. G. Neudeck
  • , S. G. Bailey
  • , H. B. Su
  • , M. Dudley
  • , R. P. Raffaelle
  • Case Western Reserve University
  • NASA Glenn Research Center
  • Stony Brook University
  • Rochester Institute of Technology

Research output: Contribution to journalArticlepeer-review

Abstract

We show the first direct experimental correlation between the presence of closed core screw dislocations in 6H-SiC epilayers with recombination centers, as well as with some of the small growth pits on the epilayer surface in lightly-doped 6H-SiC Schottky diodes. At every SWBXT-identified closed core screw dislocation, an EBIC image showed a dark spot indicating a recombination center, and Nomarski optical microscope and Atomic Force Microscope (AFM) images showed a corresponding small growth pit with a sharp apex on the surface of the epilayer.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalNASA Technical Memorandum
Issue number209648
StatePublished - 2000

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