0386314 - FZÚ 2013 RIV US eng J - Journal Article
Jarý, V. - Nikl, Martin - Mihóková, Eva - Mareš, Jiří A. - Průša, P. - Horodyský, P. - Chewpraditkul, W. - Beitlerová, Alena
Influence of yttrium content on the Ce1 and Ce2 luminescence characteristics in (Lu_1-xY_x)₂SiO₅:Ce single crystals.
IEEE Transactions on Nuclear Science. Roč. 59, č. 5 (2012), s. 2079-2084. ISSN 0018-9499. E-ISSN 1558-1578
R&D Projects: GA AV ČR KAN300100802
Institutional research plan: CEZ:AV0Z10100521
Keywords : oxide compounds * photoluminescence * scintillation detectors
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.219, year: 2012

We investigate the luminescence and scintillation characteristics of highly efficient cerium-doped scintillators, lutetium-(yttrium) orthosilicate (Lu2(1-x)Y2xSiO5:Ce, x = 0-1). The radioluminescence, photoluminescence excitation (PLE) and emission (PL) spectra of the Ce1, Ce2 centers as well as the decay curves and their temperature dependences are measured in the 80 - 500 K range. Light yield values are provided as well. The influence of yttrium concentration on the Ce1, Ce2 luminescence characteristics is demonstrated. With increasing yttrium content the onset of the Ce1 and Ce2 decay time decrease as well as the Ce1, Ce2 delayed recombination integrals increase shift to higher temperatures. The 5d1 thermally induced excited-state ionization of both Ce1 and Ce2 centers is confirmed and studied by purely optical methods.
Permanent Link: http://hdl.handle.net/11104/0215597