| Title | The effect of ionizing radiation on the luminescence properties of Eu3+ and Sm3+ doped LaF3 nanoparticles |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Gaedtke, C., Williams G.V.M., Janssens S., Raymond S.G., and Clarke D.J. |
| Journal | Physica Status Solidi (C) Current Topics in Solid State Physics |
| Volume | 9 |
| Issue | 12 |
| Pagination | 2247 - 2250 |
| Date Published | 2012 |
| ISSN | 18626351 (ISSN) |
| Keywords | Doped 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 |
| Abstract | Photoluminescence (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. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-84871376119&partnerID=40&md5=058c49947b0fedcc2799883655e4525a |
| DOI | 10.1002/pssc.201200260 |
