The Origin of X-ray Luminescence from CdTe Nanoparticles in CdTe/BaFBr:Eu2+ Nanocomposite Phosphors

Journal Article · Wed Feb 01 04:00:00 EST 2006 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.2168234· OSTI ID:878661

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

Intense X-ray luminescence from CdTe nanoparticles is observed when CdTe particles are encapsulated into BaFBr:Eu2+ 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 Eu2+ 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 new type of dosimeter for both in vitro and in vivo applications.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 878661
• Report Number(s): PNNL-SA-45966; 3620; KP1303000
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 99; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

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