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Study of As50Se50 thin film photodarkening induced by multiple wavelength beams

K. PÁLKA1,* , M. VLČEK1, J. MISTRÍK2

Affiliation

  1. Department of General and Inorganic Chemistry, University of Pardubice, Czech Republic
  2. Institute of Applied Physics and Mathematics, University of Pardubice, Czech Republic

Abstract

This paper deals with study of photodarkening induced in chalcogenide glass thin films of composition As50Se50. The kinetics of photoinduced changes under the exposures to a band gap monochromatic beam of LED diode, as well as to beams with energy higher and lower than band gap value, were measured and discussed. Mathematical expression describing the time dependences of photodarkening was established. Related structural changes were studied using Raman spectroscopy as well..

Keywords

As-Se, Thin Films, Photodarkening.

Submitted at: June 2, 2011
Accepted at: Nov. 23, 2011

Citation

K. PÁLKA, M. VLČEK, J. MISTRÍK, Study of As50Se50 thin film photodarkening induced by multiple wavelength beams, Journal of Optoelectronics and Advanced Materials Vol. 13, Iss. 11-12, pp. 1510-1513 (2011)