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High quality SiC single crystal growth by using NbC-coated crucible

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2021, 31(2), pp.63-68
  • DOI : 10.6111/JKCGCT.2021.31.2.063
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : April 1, 2021
  • Accepted : April 14, 2021
  • Published : April 30, 2021

Jeong-Hui Kim 1 Woo-Yeon Kim 1 Mi-Seon Park 1 Yeon-Suk Jang 1 Lee, Won Jae 1

1동의대학교

Accredited

ABSTRACT

This study was focused to investigate the effect of NbC-coated crucible on the quality of the SiC crystals. Then,the different properties between SiC crystals grown in a conventional graphite crucible and NbC-coated crucible were systematically compared. SiC crystals were grown using the Physical Vapor Transport (PVT) method at a temperature of 2300°C and a pressure of 5 Torr in Ar atmosphere. After grinding and polishing, the polytype of the grown SiC crystal was analyzed using Raman spectroscopy, and crystallinity was confirmed by HR-XRD. Furthermore, the defect density and the concentration of impurities were analyzed by an optical microscope and a SIMS, respectively.

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