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 journalArticlepeer-review

20 Citations (Scopus)


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
Article number083506
JournalJournal of Applied Physics
Issue number8
Publication statusPublished - 27 Apr 2005
Externally publishedYes


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