Effect of Yb doping on the afterglow and thermoluminescent properties of ZnO nanophosphors

U. Pal, R. Meléndrez, V. Chernov, M. Barboza-Flores*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

ZnO nanophosphors prepared by a glycol mediated chemical synthesis exhibit afterglow (AG) and thermoluminescence (TL) after excitation with beta rays. These properties, which are of great interest in dose assessment of ionizing radiation fields, could be appreciably modified by Yb doping. Concentration of 1, 2 and 5% diminished the AG and TL efficiency and modified the TL glow curve shape significantly. However, the 5% Yb doping concentration reduced the AG and TL fading behavior, improving the use of ZnO:Yb (5%) as potential TL ionizing radiation dosimeter.

Original languageEnglish
Pages (from-to)6513-6518
Number of pages6
JournalJournal of Nanoscience and Nanotechnology
Volume8
Issue number12
StatePublished - Dec 2008

Keywords

  • Afterglow
  • Phosphors
  • Thermoluminescence
  • ZnO:Yb nanocrystals

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