• DocumentCode
    1739185
  • Title

    Spatial dispersion effects in the exciton-polariton reflectivity spectra of CuGaS2 crystals

  • Author

    Syrbu, N. ; Ursaki, Veaceslav ; Nyari, T. ; Blaje, M. ; Prunic, P. ; Tezlevan, V.

  • Author_Institution
    Tech. Univ. of Moldova, Kishinau, Moldova
  • Volume
    1
  • fYear
    2000
  • fDate
    2000
  • Firstpage
    101
  • Abstract
    The analysis of the exciton reflectivity contour in CuGaS2 crystals at 8 K was carried out. Absorption and luminescence spectroscopy was employed for additional characterization. The value of the exciton Ridberg constant ℜ=0.03247 eV, the energy of the continuum Egn+∞=2.50305 eV and the thickness of the exciton-free layer L=22 Å were deduced from this analysis. The excited n=2 (2.53323 eV) and n=3 (2.53774 eV) states of the excitons were determined. The upper polariton branch was drawn from the angular dependence of the reflectivity
  • Keywords
    copper compounds; excitons; gallium compounds; infrared spectra; optical dispersion; photoluminescence; polaritons; reflectivity; ternary semiconductors; 2.50305 eV; 2.53323 eV; 2.53774 eV; 22 angstrom; 8 K; CuGaS2; angular dependence; continuum energy; exciton Ridberg constant; exciton-free layer; exciton-polariton reflectivity spectra; luminescence spectroscopy; spatial dispersion effects; upper polariton branch; Absorption; Crystalline materials; Crystals; Dispersion; Excitons; Luminescence; Nonlinear optics; Reflectivity; Spectroscopy; Stimulated emission;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Semiconductor Conference, 2000. CAS 2000 Proceedings. International
  • Conference_Location
    Sinaia
  • Print_ISBN
    0-7803-5885-6
  • Type

    conf

  • DOI
    10.1109/SMICND.2000.890196
  • Filename
    890196
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1739185