본문 바로가기
  • Home

A study on the thermal oxidation process of bulk AlN single crystal grown by PVT

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2020, 30(5), pp.168-173
  • DOI : 10.6111/JKCGCT.2020.30.5.168
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : July 21, 2020
  • Accepted : August 5, 2020
  • Published : October 31, 2020

Hyo Sang Kang 1 Kang, Seung-Min 2

1한양대학교 신소재공학
2한서대학교

Accredited

ABSTRACT

To analyze and describe the behavior and mechanisms occurring in the thermal oxidation process of AlN, bulk AlN single crystals were thermally treated with different temperatures. As a result, it was confirmed that full-scale oxidation of bulk AlN and growth of Al-oxide occurred from the temperature of 800°C, which confirmed that the weight% of O elements tended to increase while the N elements decreased with increasing the temperature. In the case of thermal treatment at 900°C, the grown Al-oxides were merged with neighboring Al-oxides and began to form α-Al2O3 poly-crystals. During thermal treatment at the temperature of 1000°C, hexagonal pyramidal shaped poly-crystalline α-Al2O3 was clearly observed. Through the X-ray diffraction pattern analysis, the changes of surface crystal structure according to the temperature of bulk AlN were investigated in detail.

Citation status

* References for papers published after 2023 are currently being built.