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Properties of AlN epilayer grown on 6H-SiC substrate by mixed-source HVPE method

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2020, 30(3), pp.96-102
  • DOI : 10.6111/JKCGCT.2020.30.3.096
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : May 25, 2020
  • Accepted : June 8, 2020
  • Published : June 30, 2020

ParkJunghyun 1 Kyoung Hwa Kim 2 Jeon Injun 3 Hyung Soo Ahn 1 Min Yang 1 Sam Nyung Yi ORD ID 1 Cho, Chae-Ryong 3 Kim Suck Whan 4

1한국해양대학교
2한국해양대학교 화합물반도체공정교육센터
3부산대학교
4안동대학교

Accredited

ABSTRACT

In this paper, AlN epilayers on 6H-SiC (0001) substrate are grown by mixed source hydride vapor phase epitaxy(MS-HVPE). AlN epilayer of 0.5 μm thickness was obtained with a growth rate of 5 nm per hour. The surface of AlN epilayergrown on 6H-SiC (0001) substrate was investigated by field emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray spectroscopy (EDS). Dislocation density was considered through HR-XRD and related calculations. A fine crystalline AlN epilayer with screw dislocation density of 1.4 × 10⁹cm⁻² and edge dislocation density of 3.8 × 10⁹cm⁻² was confirmed. The AlN epilayer on 6H-SiC (0001) substrate grown by using the mixed source HVPE method could be applied to power devices.

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