Journal of the Semiconductor & Display Technology (반도체디스플레이기술학회지)

The Korean Society Of Semiconductor & Display Technology (한국반도체디스플레이기술학회)
권호 표지

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
Download PDF
⟨ Previous Next ⟩

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.

References

  1. Godhuli Sinha, Amitava Patra C., "Generation of green, red and white light from rare-earth doped Ga2O3 nanoparticles", Chem. Phys. Lett, Vol.473, pp.151-154, 2009. https://doi.org/10.1016/j.cplett.2009.03.074
  2. E. Nogales, J. A. Garcia., et al. "Visible and infrared luminescence study of Er doped β-Ga2O3 and Er3Ga5O12", J. Phys. D: Appl. Phys. Vol41, pp.5, 2008.
  3. Nuotian He, Huili Tang, et al. "Ultra-fast scintillation properties of β-Ga2O3 single crystals grown by Floating Zone method." Nuclear Inst. Methods Phys. Res. A, Vol.888, pp. 9-12, 2018. https://doi.org/10.1016/j.nima.2018.01.023
  4. Y. Tomm, P Reiche, D. Klimm, T. Fukuda, "Czochralski grown Ga2O3 crystals", J. of Cryst. Growth, Vol.220, pp. 510-514, 2000. https://doi.org/10.1016/S0022-0248(00)00851-4
  5. Encarnacion G. Villora, Kiyoshi Shimamura, et al. "Large-size β-Ga2O3 single crystals and wafers", J. of Cryst. Growth, Vol.270, pp. 420-426, 2004. https://doi.org/10.1016/j.jcrysgro.2004.06.027
  6. Satoshi Watauchi, Isao Tanaka, et al, "Crystal growth of Ca12Al14O33 by the floating zone method." J. of Cryst. Growth, Vol.237, pp.801-805, 2002. https://doi.org/10.1016/S0022-0248(01)02038-3
  7. Emroj Hossain, Ruta Kulkarni, et al, "Optimization of Gas Ambient for High quality β-Ga2O3 Single crystals Grown by the Optical Floating Zone Technique", ECS J of Solid State Sci. and Technol., Vol.8(7), pp. 3144-3148, 2019.
  8. Jungang Zhang, Bin Li et al, "Growth and spectral characterization of β-Ga2O3 single crystals", J. of Physics and Chemistry of Solids, Vol.67, pp. 2448-2451, 2006. https://doi.org/10.1016/j.jpcs.2006.06.025
  9. Zbigniew Galazka, Steffen Ganschow, et al, "Bulk single crystals of β-Ga2O3 and Ga-based spinels as ultra-wide band gap transparent semiconducting oxides", Progress in Crystal Growth and Characterization of Materials, Vol.67, pp. 100511, 2021. https://doi.org/10.1016/j.pcrysgrow.2020.100511
  10. N. Suzuki, S. Ohira, et al., "Fabrication and characterization of transparent conductive Sn-doped β-Ga2O3 single crystal", Phys. Status Solidi C, Vol.4, pp. 2310-2313, 2007. https://doi.org/10.1002/pssc.200674884
  11. T. Onuma, S. Fujioka, et al, "Polarized Raman spectra in β-Ga2O3 single crystals", J. of Cryst. Growth, Vol.401, pp. 330-333, 2014. https://doi.org/10.1016/j.jcrysgro.2013.12.061
  12. T. Onuma, S. Fujioka, et al, "Correlation between blue luminescence intensity and resistivity in β-Ga2O3 single crystals", Appl. Phys. Lett, Vol.103, pp. 041910, 2013. https://doi.org/10.1063/1.4816759
  13. X.H. Wang, F.B. Zhang, et al, "Electrical properties and emission mechanisms of Zn-doped β-Ga2O3 Films", J. of Phys. Chem. Solids, Vol.75, pp.1201-1204, 2014. https://doi.org/10.1016/j.jpcs.2014.06.005
  14. Kun Zhang, Zongwei Xu, et al, "Raman and photoluminescence properties of un-/ion doped β-Ga2O3 single-crystals prepared by edge-defined film-fed growth method", Physica B: Physics of Condensed Matter, Vol.20, pp. 30616, 2020.
  15. Laurent Binet, Didier Gourier "Origin of the blue lumines-cence of β-Ga2O3", J. Phys. Chem. Solids, Vol.59, pp. 1241-1249, 1998. https://doi.org/10.1016/S0022-3697(98)00047-X
  16. Encarnacion G. Villora, et al, "Optical spectroscopy Study on β-Ga2O3", Jpn. J. Appl. Phys, Vol.41, pp. 622-625, 2002.
  17. T. Onuma, Y. Nakata, et al, "Modeling and interpretation of UV and blue luminescence intensity in β-Ga2O3 by silicon and nitrogen doping", J. of Appl. Phys, 124, pp. 075103-075106, 2018. https://doi.org/10.1063/1.5030612
  18. G. Naresh Kumar, H. Macintyre, et al, "Origin of Red Emission in β-Ga2O3 Analyzed by Cathodoluminescence and Photo-luminescence Spectroscopy", J. of Phys. Status Solidi B, Vol.258, pp.6-8, 2021.