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. Multiplets of transition-metal ions in crystals S. Sugaon;Y. Tanabe;H. Kamimura
  2. 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
  3. 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
  4. Solid State Comm. v.94 Deep levels in TiGaS₂single crystals H. J. Song;S. H. Yun;W. T. Kim
  5. J. Appl. Phys. v.32 Optical absorption of $Co^{2+}$ in CuAlS₂ I. Aksenov;T. Kai;N. Nishikawa;K. Sato
  6. Solid State Comm. Green photoemission of α-Ga₂S₃crystals T. Ando;K. Kase
  7. Phys. Rev. B11 Lattice dynamics of tetrahedral banded semiconductors containing ordered vacant sites E. Finkman;J. Tauc;R. Kershaw;A. Wold
  8. Phys. Stat. Sol (b) 83 v.k149 Optical absorption in α-Ga₂S₃single crystals V. P. Mushinskii;L. I. Palaki;V. V. Chebotaru
  9. 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
  10. Acta Cryst. v.16 The crystal structure of α-Ga₂S₃ J Goodyear;G. A. Steigman
  11. Optical presses in semiconductors J. I. Pankove
  12. Physical v.34 Temperature dependence of the energy gaps in semiconductors Y. P. Varshni
  13. Phys. Stat. Sol. (a) 113 v.K5 Electron microscopy study of γ-Ga₂S₃ M. Guymont;A. Tomas;M. P. Pardo;M. Guittard
  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. Solid State Comm. v.81 Green photoemission of α-Ga₂S₃crystals T. Ando;K. Kase