Optical Properties of Ga2O3 Single Crystal by Floating Zone Method

부유대역법을 이용한 단결정Ga2O3의 광학적 특성

  • Gim, JinGi (Department of Display Science and Engineering, Pukyong National University) ;
  • Kim, Jongsu (Department of Display Science and Engineering, Pukyong National University) ;
  • Kim, Gwangchul (Physics Department, School of Liberal Arts, KOREATECH Cheonan)
  • 김진기 (부경대학교 융합디스플레이공학과) ;
  • 김종수 (부경대학교 융합디스플레이공학과) ;
  • 김광철 (한국기술교육대학교 교양학부 물리학전공)
  • Received : 2021.11.09
  • Accepted : 2021.12.14
  • Published : 2021.12.31

Abstract

The Ga2O3 single crystal was grown through a floating zone method, and its structural and optical properties were instigated. It has a monoclinic crystal structure with a (100) crystal orientation and an optical band gap energy of 4.6 eV. It showed an average transmittance of 70% in the visible region. At room temperature, its photoluminescent spectrum showed three different peaks: the ultraviolet at 360 nm, the blue-green at 500 nm, and the red peaks at 700 nm. Especially, at liquid nitrogen temperature, the ultraviolet peak was optically active while the others were quenched.

Keywords

Acknowledgement

이 논문은 2021년도 한국기술교육대학교 교수교육연구진흥과제 지원에 의하여 연구되었음.

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