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 Scopus citations

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

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Structure and luminescence of BaFBr: Eu2+ and BaFBr: Eu2+, Tb3+ phosphors and thin films'. Together they form a unique fingerprint.

  • 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