Structure and luminescence of BaFBr: Eu2+ and BaFBr: Eu2+, Tb3+ phosphors and thin films

Wei Chen, Shaopeng Wang, Sarah L. Westcott, Jun Zhang, Kai Dou, Alan G. Joly, David E. McCready

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The inclusion of Tb3+ ions doped into the storage phosphor BaFBr: Eu2+ results in increased purity of the host material as well as an improvement in the linearity of the photostimulated luminescence (PSL) intensity versus the x-ray irradiation dose. Films produced by pulsed laser deposition (PLD) also show similar results, indicating that PLD is a powerful technique for producing high quality, high purity thin films. As a result, the PSL dose response is more linear in the thin films than in the powder samples. The emission intensity of Eu2+ in the phosphors increases with the increasing time of x-ray irradiation while the emission intensity of Tb3+ remains almost constant. This result may be explained by considering the reduction of impurity Eu3+ ions following trapping of the photoexcited electrons. The results demonstrate that these materials are not only potentially useful for medical imaging but also show promise for use in radiation dosimetry.

Original languageEnglish (US)
Article number083506
JournalJournal of Applied Physics
Volume97
Issue number8
DOIs
StatePublished - Apr 27 2005
Externally publishedYes

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x ray irradiation
phosphors
luminescence
pulsed laser deposition
purity
thin films
dosage
dosimeters
linearity
ions
trapping
inclusions
impurities
radiation
electrons

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

Cite this

Chen, W., Wang, S., Westcott, S. L., Zhang, J., Dou, K., Joly, A. G., & McCready, D. E. (2005). Structure and luminescence of BaFBr: Eu2+ and BaFBr: Eu2+, Tb3+ phosphors and thin films. Journal of Applied Physics, 97(8), [083506]. https://doi.org/10.1063/1.1875738

Structure and luminescence of BaFBr : Eu2+ and BaFBr: Eu2+, Tb3+ phosphors and thin films. / Chen, Wei; Wang, Shaopeng; Westcott, Sarah L.; Zhang, Jun; Dou, Kai; Joly, Alan G.; McCready, David E.

In: Journal of Applied Physics, Vol. 97, No. 8, 083506, 27.04.2005.

Research output: Contribution to journalArticle

Chen, Wei ; Wang, Shaopeng ; Westcott, Sarah L. ; Zhang, Jun ; Dou, Kai ; Joly, Alan G. ; McCready, David E. / Structure and luminescence of BaFBr : Eu2+ and BaFBr: Eu2+, Tb3+ phosphors and thin films. In: Journal of Applied Physics. 2005 ; Vol. 97, No. 8.
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