Energy migration processes in undoped and Ce-doped multicomponent garnet single crystal scintillators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F15%3A00235832" target="_blank" >RIV/68407700:21340/15:00235832 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jlumin.2015.05.015" target="_blank" >https://doi.org/10.1016/j.jlumin.2015.05.015</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlumin.2015.05.015" target="_blank" >10.1016/j.jlumin.2015.05.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy migration processes in undoped and Ce-doped multicomponent garnet single crystal scintillators

Popis výsledku v původním jazyce

Multicomponent garnets (Y3-xGdxAl5-yGayO12) doped with Ce3+ ions are promising scintillators with a high density, fast response time and high light yield. To deepen the knowledge about the transfer stage of scintillation mechanism we discuss the energy migration and energy transfer processes in the set of undoped and Ce3+ activated multicomponent garnet single crystals. Temperature dependence of Gd3+ emission intensities as well as decay kinetics in Y3-xGdxAl5-yGayO12 (x,y=1,2,3) crystals point to the Gd3+->Gd3+ nonradiative energy migration, which is diffusion limited. Concentration quenching of Gd3+ emission occurs by energy migration to accidental impurities and/or structure defects. Temperature dependence of photoluminescence emission intensities and decay time measurements of Gd3+ as well as Ce3+ ions in Gd3Ga3Al2O12:Ce3+ single crystal reveal nonradiative energy transfer Gd3+->Ce3+ (including migration through Gd3+ sublattice) which is responsible for slow Ce3+ fluorescence decay component

Název v anglickém jazyce

Energy migration processes in undoped and Ce-doped multicomponent garnet single crystal scintillators

Popis výsledku anglicky

Multicomponent garnets (Y3-xGdxAl5-yGayO12) doped with Ce3+ ions are promising scintillators with a high density, fast response time and high light yield. To deepen the knowledge about the transfer stage of scintillation mechanism we discuss the energy migration and energy transfer processes in the set of undoped and Ce3+ activated multicomponent garnet single crystals. Temperature dependence of Gd3+ emission intensities as well as decay kinetics in Y3-xGdxAl5-yGayO12 (x,y=1,2,3) crystals point to the Gd3+->Gd3+ nonradiative energy migration, which is diffusion limited. Concentration quenching of Gd3+ emission occurs by energy migration to accidental impurities and/or structure defects. Temperature dependence of photoluminescence emission intensities and decay time measurements of Gd3+ as well as Ce3+ ions in Gd3Ga3Al2O12:Ce3+ single crystal reveal nonradiative energy transfer Gd3+->Ce3+ (including migration through Gd3+ sublattice) which is responsible for slow Ce3+ fluorescence decay component

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Luminescence

ISSN

0022-2313

e-ISSN

1872-7883

Svazek periodika

166

Číslo periodika v rámci svazku

October

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

117-122

Kód UT WoS článku

000359329900018

EID výsledku v databázi Scopus

2-s2.0-84930940107