Optical methods for the evaluation of lanthanide excited state thermal ionization barrier in luminescent materials

0389571 - FZÚ 2013 RIV US eng J - Článek v odborném periodiku
Fasoli, M. - Vedda, A. - Mihóková, Eva - Nikl, Martin
Optical methods for the evaluation of lanthanide excited state thermal ionization barrier in luminescent materials.
Physical Review. B. Roč. 85, č. 8 (2012), "085127-1"-"085127-8". ISSN 1098-0121
Grant CEP: GA AV ČR KAN300100802; GA MŠMT(CZ) ME10084
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: Lu₂Si₂O₇ * Pr-doped * luminescence * scintillator * excited state ionization
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 3.767, rok: 2012

We improve a recently proposed approach for the evaluation of the thermal ionization barrier of the lanthanide excited states in luminescent materials by taking into account the effect of traps and their decay time temperature dependence. We present two distinct methods, and we apply them to the case of Lu2Si2O7:Pr. To this purpose, wavelength resolved thermally stimulated luminescence and photoluminescence time decay measurements extending up to the ms time scale have been performed.
Trvalý link: http://hdl.handle.net/11104/0218436