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Structure and optical properties of TeO2·PbCl2·PbF2 glasses doped with Pr and Er, prepared in Au or Pt crucibles

V. TRNOVCOVÁ1, M. KUBLIHA2, V. LABAŠ1,2, M. KADLEČÍKOVÁ3, J. PEDLÍKOVÁ4, J. GREGUŠ5, J. SLABEYCIUS1

Affiliation

  1. Faculty of Education, Catholic University, SK-034 01 Ružomberok, Slovakia
  2. Faculty of Materials Science and Technology, Slovak University of Technology, SK-917 24 Trnava, Slovakia
  3. Faculty of Electrical Engineering& Informatics, Slovak University of Technology, SK-812 19 Bratislava, Slovakia
  4. Institute of Inorganic Chemistry, Academy of Sciences of Czech Republic, CZ-166 28 Prague, Czech Republic
  5. Faculty of Mathematics, Physics and Informatics, Comenius’ University, SK-842 48 Bratislava, Slovakia

Abstract

Influence of crucibles (Au or Pt) on the structure and optical properties of 60TeO2⋅40PbCl2 and 60TeO2⋅20PbCl2⋅20PbF2 glasses, “pure” and doped with 1000 wt-ppm Pr3+ or Er3+, which are added as metals, chlorides, or oxides, is reported. In glasses prepared in Au crucibles, the absorption edge is shifted to shorter wavelengths and the color of the glass is changed from red or orange to yellowish or dirty white, respectively. In the range of 640-700 nm, five Pr or six Er photoluminescence (PL) peaks are observed. In the range of 200 – 1200 cm-1, Raman scattering (RS) spectrums show 6 (for Pr doping) or 7 (for Er doping) bands. Spectrums are deconvoluted using symmetrical Gaussian functions. Relative intensities of PL and RS peaks depend on the chemical form of dopants and on the material of the crucible. Positions of these bands are almost independent of these conditions. On basis of RS spectrums, short-distance ordering of glasses is discussed. Results are compared with those which we have obtained for 70TeO2⋅30PbCl2 glasses..

Keywords

Tellurite/lead chloride/lead fluoride glasses, Pr3+ or Er3+ doping, Au or Pt crucibles, Raman scattering, Optical absorption, Photoluminescence.

Submitted at: Nov. 28, 2011
Accepted at: Feb. 20, 2012

Citation

V. TRNOVCOVÁ, M. KUBLIHA, V. LABAŠ, M. KADLEČÍKOVÁ, J. PEDLÍKOVÁ, J. GREGUŠ, J. SLABEYCIUS, Structure and optical properties of TeO2·PbCl2·PbF2 glasses doped with Pr and Er, prepared in Au or Pt crucibles, Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 1-2, pp. 77-83 (2012)