Advertisement

Journal of Applied Spectroscopy

, Volume 73, Issue 2, pp 211–215 | Cite as

Luminescence of CsBr:Eu films grown by liquid-phase epitaxy

  • Yu. V. Zorenko
  • R. M. Turchak
  • T. I. Voznyak
  • A. P. Luchechko
Article

Abstract

By liquid-phase epitaxy from an aqueous alcoholic solution, we have obtained films of the well-known storage phospor CsBr:Eu, and we have studied their cathodoluminescence and photoluminescence (PL) spectra compared with the undoped CsBr films. We have established that the structure of the photoluminescence centers of the CsBr:Eu films when excited by laser radiation in the absorption band of the Eu2+ ions (λ = 337 nm) includes Eu2+-VCs isolated dipole centers and CsEuBr3 aggregate centers, and also luminescence centers based on inclusions of hydroxyl group OH with the corresponding emission bands in the 440 nm, 520 nm, and 600 nm regions. We have studied the dependence of the spectra and the intensity of the photoluminescence for CsBr:Eu films on annealing temperature in air at 423–483 K, compared with analogous dependences for CsBr:Eu single crystals obtained from the melt. We have shown that annealing the films at T = 423–463 K leads to rapid formation of CsEuBr3 aggregate luminescence centers, while for T > 473 K thermal degradation of these centers occurs. We conclude that the observed differences between the photoluminescence spectra of CsBr:Eu films and CsBr:Eu single crystals may be due to additional doping of the films with OH ions.

Key words

storage phosphors CsBr:Eu2+ liquid-phase epitaxy luminescence thermal annealing 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    P. Hackenschmied, G. Schierning, M. Batentschuk, and A. Winnacker, J. Appl. Phys., 93, No. 9, 5109–5112 (2003).CrossRefADSGoogle Scholar
  2. 2.
    Yu. V. Zorenko, R. M. Turchak, and I. V. Konstankevich, Fiz. Tverd. Tela, 46, No. 7, 1189–1193 (2004).Google Scholar
  3. 3.
    Yu. V. Zorenko, R. M. Turchak, W. Gryk, and M. Grinberg, J. Lumin., 106, 313–320 (2004).CrossRefGoogle Scholar
  4. 4.
    P. Hackenschmied, G. Zeitler, M. Batentschuk, A. Winnacker, B. Schmitt, M. Fuchs, E. Hell, and W. Knupfer, Nucl. Instrum. Meth. Phys. Res., B191, 163–167 (2002).ADSGoogle Scholar
  5. 5.
    B. Schmitt, M. Fuchs, E. Hell, W. Knupfer, P. Hackenschmied, and A. Winnacker, Nucl. Instrum. Meth. Phys. Res., B191, 800–804 (2002).ADSGoogle Scholar
  6. 6.
    M. Niki, K. Nitsch, and K. Polak, Phys. Rev., B51, No. 8, 5192–5199 (1995).ADSGoogle Scholar
  7. 7.
    S. V. Myagkota, Opt. and Spectrosc., 87, No. 2, 290–294 (1999).ADSGoogle Scholar
  8. 8.
    J. K. Radhakrishnan and S. Selvasckarapandian, J. Lumin., 63, 137–142 (1995).CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  • Yu. V. Zorenko
    • 1
  • R. M. Turchak
    • 1
  • T. I. Voznyak
    • 1
  • A. P. Luchechko
    • 1
  1. 1.Ivan Franko L’vov National UniversityL’vovUkraine

Personalised recommendations