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TitleThe effect of ionizing radiation on the luminescence properties of Eu3+ and Sm3+ doped LaF3 nanoparticles
Publication TypeJournal Article
Year of Publication2012
AuthorsGaedtke, C., Williams G.V.M., Janssens S., Raymond S.G., and Clarke D.J.
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Pagination2247 - 2250
Date Published2012
ISSN18626351 (ISSN)
KeywordsDoped nanoparticles, energy transfer, Europium, Ionizing radiation, LaF<sub>3</sub>, Luminescence properties, Nanoparticles, Non-radiative recombinations, Photoluminescence, PL lifetime, Radiative lifetime, Radio-luminescence, Rare earth concentration, Real-time dosimetry, X ray irradiation
AbstractPhotoluminescence (PL), PL lifetime, and radioluminescence (RL) measurements were made on LaF3 nanoparticles doped with Eu3+ or Sm3+. The radiative lifetimes decreased with increasing rare earth concentrations, which can be attributed to energy transfer to the surface of the nanoparticles followed by non-radiative recombination. The RL signal increases with increasing concentration for Eu3+ concentrations up to 20% Eu3+ but it saturates and disappears for >10% Sm3+. A dose-independent RL was observed up to 10 kGy during continual X-ray irradiation for Eu3+ and Sm3+ doped nanoparticles, which is advantageous for real time dosimetry applications. © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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