The origin of x-ray luminescence from CdTe nanoparticles in CdTe/BaFBr:Eu 2+ nanocomposite phosphors

Wei Chen*, Jun Zhang, Sarah L. Westcott, Alan G. Joly, Jan Olle Malm, Jan Olov Bovin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

X-ray luminescence from CdTe nanoparticles is observed when CdTe nanoparticles are encapsulated into BaFBr:Eu 2+ phosphors. In contrast, negligible x-ray luminescence is observed from the unencapsulated nanoparticles, either in solution or in solid form. The origin of the x-ray luminescence is attributed to the effective energy transfer from Eu 2+ ions to CdTe nanoparticles in the nanocomposite materials. The x-ray luminescence of these nanocomposites is dose dependent and the emission wavelength is size adjustable which may allow use as a type of dosimeter for both in vitro and in vivo applications.

Original languageEnglish
Article number034302
JournalJournal of Applied Physics
Volume99
Issue number3
DOIs
Publication statusPublished - 1 Feb 2006
Externally publishedYes

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