Thermally and optically stimulated luminescence of new ZnO nanophosphors exposed to beta particle irradiation

C. Cruz-Vázquez*, S. E. Burruel-Ibarra, H. Grijalva-Monteverde, V. Chernov, R. Bernal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

In this work, we report on the thermoluminescence (TL) and the optically stimulated luminescence (OSL) of ZnO nanophosphors obtained by thermal annealing of ZnS powders synthesized by precipitation in a chemical bath deposition reaction. To obtain nanocrystalline ZnO, ZnS pellet-shaped samples were subjected to a sintering process at 700C during 24h exposed to air at atmospheric pressure. Some samples were exposed to beta particles in the 0.15-10.15kGy dose range and the integrated TL as a function of dose increased with dose level, with no saturation indication for the tested dose levels. Computerized glow-curve deconvolution of the experimental glow curves in individual peaks revealed a second-order kinetics. In order to test the OSL response, samples were irradiated with beta particles with doses up to 600Gy, and an increasing intensity as dose increased was observed. We conclude that the new ZnO phosphors under investigation are good candidates to be used as dosimetric materials.

Original languageEnglish
Pages (from-to)737-743
Number of pages7
JournalRadiation Effects and Defects in Solids
Volume162
Issue number10-11
DOIs
StatePublished - Oct 2007

Keywords

  • Dosimetry
  • OSL
  • Radiation detectors
  • Thermoluminescence
  • Zinc oxide

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