Temperature dependence of luminescence characteristics of Lu.sub.2(1-x)./sub.Y.sub.2x./sub.SiO.sub.5./sub.: Ce.sup.3+./sup. scintillator grown by the Czochralski method

0353681 - FZÚ 2011 RIV US eng J - Journal Article
Feng, H. - Jarý, Vítězslav - Mihóková, Eva - Ding, D. - Nikl, Martin - Ren, G. - Li, H. - Pan, S. - Beitlerová, Alena - Kučerková, Romana
Temperature dependence of luminescence characteristics of Lu_2(1-x)Y_2xSiO₅: Ce³⁺ scintillator grown by the Czochralski method.
Journal of Applied Physics. Roč. 108, č. 3 (2010), 033519/1-033519/6. ISSN 0021-8979. E-ISSN 1089-7550
R&D Projects: GA MŠMT(CZ) ME10084
Institutional research plan: CEZ:AV0Z10100521
Keywords : temperature dependence * luminescence * scintillator
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.064, year: 2010

In this paper, we investigate the temperature dependence of luminescence characteristics of highly efficient cerium-doped scintillator, lutetium-yttrium orthosilicate Lu2(1−x)Y2xSiO5:Ce3+. The photoluminescence excitation and emission spectra have been measured in a broad temperature range. The temperature dependence of the Ce1 and Ce2 decay times shows the onset of decay time decrease at about 300 K. This observation demonstrates that unlike so far reported, the Ce2 center is not substantially quenched until room temperature. The 5d1 excited-state ionization of both Ce1 and Ce2 centers is studied by purely optical methods.
Permanent Link: http://hdl.handle.net/11104/0192854