Počet záznamů: 1

Influence of yttrium content on the Ce.sub.Lu1./sub. and Ce.sub.Lu2./sub. luminescence characteristics in (Lu.sub.1-x./sub.Y.sub.x./sub.).sub.2./sub.SiO.sub.5./sub.: Ce single crystal

  1. 1.
    0370210 - FZU-D 2012 RIV NL eng J - Článek v odborném periodiku
    Jarý, Vítězslav - Nikl, Martin - Ren, G. - Horodysky, P. - Pazzi, G.P. - Kučerková, Romana
    Influence of yttrium content on the CeLu1 and CeLu2 luminescence characteristics in (Lu1-xYx)2SiO5: Ce single crystal.
    Optical Materials. Roč. 34, č. 2 (2011), s. 428-432 ISSN 0925-3467
    Grant CEP: GA MŠk(CZ) ME10084; GA AV ČR IAA100100810
    Výzkumný záměr: CEZ:AV0Z10100521
    Klíčová slova: scintillator * excited state ionization * temperature dependence * L(Y)SO: Ce
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 2.023, rok: 2011

    This work deals with luminescence and scintillation characteristics of highly efficient cerium-doped scintillators, lutetium-yttrium orthosilicate. The radioluminescence, photoluminescence excitation (PLE) and emission (PL) spectra of the CeLu1, CeLu2 centers in LSO, LYSO and YSO are measured and discussed between 800 and 400 K with respect to the CeLu1 and CeLu2 features assignment and separation. The inlufence of yttrium concentration in Lu2(1-x)Y2xSiO5: Ce3+ on CeLu1, CeLu2 luminescence characteristics is demonstrated. Temperature dependence shows that with increasing yttrium content the onset of the CeLu1 and CeLu2 deay times decrease and CeLu1, CeLu2 delayed recombanation integrals incease shift to higher temperatures. The 5d1 theramally induced excited-state ionization of both CeLu1 and CeLu2 centers is confirmed and studied by purely optical methods.
    Trvalý link: http://hdl.handle.net/11104/0204079