Optical Properties of Undoped and $Co^{2+}$-doped $\alpha-Ga_2S_3$Thin Films by Spray Pyrolysis

분무합성법으로 제작한$\alpha-Ga_2S_3$$\alpha-Ga_2S_3:Co^{2+}$ 박막의 광학적 특성

  • 김형곤 (조선이공대학 전기과) ;
  • 김남오 (조선이공대학 전기과) ;
  • 박태형 (원광대학교 물리학과) ;
  • 진문석 (동신대학교 전자공학과) ;
  • 김미향 (전남대학교 물리학과, 기초과학지연구소) ;
  • 오석균 (전남대학교 물리학과, 기초과학지연구소) ;
  • 김화택 (전남대학교 물리학과, 기초과학지연구소)
  • Published : 2001.07.01


Undoped and Co$^{2+}$ $\alpha$-Ga$_2$S$_3$ thin films were grown by spray pyrolysis method. It has been found that these thin films have a monoclinic structure and direct optical energy gap and indirect were located to 3.477eV and 3.123 eV at 10K respectively. In the photoluminescence due to a D0A(donor-acceptor) pair recombination were observed at 502 nm and 671 nm for the $\alpha$-Ga$_2$S$_3$ thin film, where is excited by the 325 nm-line of He-Cd laser. These peaks are identified to be corresponding to the electron transition between the energy levels of Co$^{2+}$ ion sited a the T$_{d}$ symmetry point in the $\alpha$-Ga$_2$S$_3$;Co$^{2+}$ thin film. film.


  1. Phys. Stat. Sol (b) 83 v.k149 Optical absorption in α-Ga₂S₃single crystals V. P. Mushinskii;L. I. Palaki;V. V. Chebotaru
  2. Phys. Stat. Sol. (a) 113 v.K5 Electron microscopy study of γ-Ga₂S₃ M. Guymont;A. Tomas;M. P. Pardo;M. Guittard
  3. Phys. Rev. B11 Lattice dynamics of tetrahedral banded semiconductors containing ordered vacant sites E. Finkman;J. Tauc;R. Kershaw;A. Wold
  4. Solid State Comm. v.81 Green photoemission of α-Ga₂S₃crystals T. Ando;K. Kase
  5. Solid-State Comm. v.97 Photoluminescence of Ga₂S₃and Ga₂S₃:Mn single crystals J. S. Lee;Y. H. Won;H. N. Kim;C. D. Kim;W. T. Kim
  6. J. Mat. Sci. Lett. v.6 Optical energy gaps of $In_ {2-x}Ga_xS_3$ thin films prepared by spray pyrolysis W. T. Kim;H. S. Kim;Y. G. Kim;S. R. Hahn
  7. Multiplets of transition-metal ions in crystals S. Sugaon;Y. Tanabe;H. Kamimura
  8. Acta Cryst. v.16 The crystal structure of α-Ga₂S₃ J Goodyear;G. A. Steigman
  9. Optical presses in semiconductors J. I. Pankove
  10. Physical v.34 Temperature dependence of the energy gaps in semiconductors Y. P. Varshni
  11. Solid State Comm. Green photoemission of α-Ga₂S₃crystals T. Ando;K. Kase
  12. Solid State Comm. v.94 Deep levels in TiGaS₂single crystals H. J. Song;S. H. Yun;W. T. Kim
  13. Phys. Rev. v.B50 Structural and optical properties of $Zn_{1-x}Cd_xGa_2Se_4$ and $Zn_{1-x}Cd_xGa_2Se_4 : Co^{2+}$ single crystal Y. L. Lee;W. T. Kim
  14. J. Chem. Phys. v.51 Crystal-field spectra of $d^{3.7}$ ions. V. Td $Co^{2+}$ in ZnAl₂O₄spinel J. Ferguson;D. L. Wood;L. G. Van Uitert
  15. J. Appl. Phys. v.32 Optical absorption of $Co^{2+}$ in CuAlS₂ I. Aksenov;T. Kai;N. Nishikawa;K. Sato