Photoluminescence, photo-stimulated luminescence and thermoluminescence properties of CaB2O4 crystals activated with Ce3+

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Abstract

Photoluminescence (PL), photo-stimulated luminescence (PSL), and thermoluminescence (TL) properties of a Ce-doped CaB2O4 crystal were studied. The Ce-doped crystal was prepared by the simple solidification method using a Pt crucible under nitrogen atmosphere. A PL emission band in the 350-370 nm wavelength range was obtained under excitation at 325 nm owing to the 5d (t2g)-4f (2F5/2, 2F7/2)-allowed transition of the Ce3+ emission center. The fluorescence quantum efficiency and the decay time of Ce3+ were estimated to be about 70% and 29 ns, respectively. The 5d-4f emission band of Ce3+ also appeared in the 350-370 nm wavelength range in the TL and PSL spectra. Good linear TL and PSL responses were observed in the 1-1000 mGy and 1-10,000 mGy X-ray dose range, respectively.

Original languageEnglish
Pages (from-to)49-52
Number of pages4
JournalOptical Materials
Volume41
DOIs
Publication statusPublished - 2015 Mar 1

Keywords

  • Ce 5d-4f transition
  • Photo-stimulated luminescence
  • Thermoluminescence

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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