Comparison of reversible photodarkening in As2S3 and As2Se3 amorphous thin films

  • M. MunzarEmail author
  • L. Tichy


Photoinduced darkening of well annealed amorphous As2S3 and As2Se3 films induced by exposure to near-band gap monochromatic light with various intensities was studied. Under well comparable conditions of exposure the magnitude of photodarkening of As2S3 exceeds the one of As2Se3. In both cases, the kinetics of photoinduced darkening follows single exponential and the formal rate constant of photodarkening of As2S3 was found almost one order magnitude higher compared to As2Se3. Exposure by medium and high intensities enhances the red shift of the gap. This enhancement is, however, unstable and can be erased either by a dark relaxation or by illumination using the same near-band gap monochromatic light with low intensity. Observed differences in photodarkening of As2S3 and As2Se3 thin films are briefly discussed.


Chalcogenide Glass As2Se3 Average Coordination Number Photoinduced Change Incident Photon Flux 
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Supported by the project MSMT 1K05012. L.T. also acknowledges support from the project AVOZ 40500505.


  1. 1.
    Ka. Tanaka, J. Non-Cryst. Solids 35 & 36, 1023 (1980)CrossRefGoogle Scholar
  2. 2.
    S.R. Elliott, J. Non-Cryst. Solids 81, 71 (1986)CrossRefGoogle Scholar
  3. 3.
    Ke. Tanaka, Rev. Sol. State Sci. 4, 641 (1990)Google Scholar
  4. 4.
    K. Shimakawa, A.V. Kolobov, S.R. Elliott, Adv. Phys. 44, 475 (1995)CrossRefGoogle Scholar
  5. 5.
    M. Frumar, Z. Cernosek, J. Jedelsky, B. Frumarova, T. Wagner, J. Optoelectron. Adv. Mater. 3, 177 (2001)Google Scholar
  6. 6.
    J. Singh, Appl. Surface Sci. 248, 50 (2005)CrossRefGoogle Scholar
  7. 7.
    J. Tauc (ed.), Amorphous and Liquid Semiconductors (Plenum, New York, 1974)Google Scholar
  8. 8.
    J. I. Pankove, Optical Properties in Semiconductors (Prentice-Hall, Englewood Cliffs, NJ, 1971)Google Scholar
  9. 9.
    J.C. Phillips J. Non-Cryst. Solids 34, 153 (1979); M.F. Thorpe J. Non-Cryst. Solids 57, 355 (1983)Google Scholar
  10. 10.
    Ke. Tanaka, J. Non-Cryst. Solids 59 & 60, 925 (1983)CrossRefGoogle Scholar
  11. 11.
    F.Wang, P. Boolchand, Non-crystalline Materials for Optoelectronics, ed. by G. Lucovsky, M. Popescu, INOE 2004, pp. 15–41Google Scholar
  12. 12.
    E.A. Davis, N.F. Mott, Philos. Mag. 22, 903 (1970)CrossRefGoogle Scholar
  13. 13.
    A.V. Kolobov, H. Oyanagi, K. Tanaka, K. Tanaka, Phys. Rev. B 55(2), 726 (1997)CrossRefGoogle Scholar
  14. 14.
    C.R. Schardt, Ph.D Thesis, University of Florida, 2000Google Scholar

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© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Joint Laboratory of Solid State Chemistry of Institute of Macromolecular ChemistryAcademy of Sciences of the Czech Republic and University of PardubicePardubiceCzech Republic

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