Defect engineering in Mg2+ co-doped LuAG:Ce ceramics: towards ultrahigh fast scintillation proportion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640507" target="_blank" >RIV/68378271:_____/25:00640507 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0372124" target="_blank" >https://hdl.handle.net/11104/0372124</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.26599/JAC.2025.9221148" target="_blank" >10.26599/JAC.2025.9221148</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Defect engineering in Mg2+ co-doped LuAG:Ce ceramics: towards ultrahigh fast scintillation proportion

Popis výsledku v původním jazyce

A slow scintillation component due to charge carrier capture at point defects is a serious issue in scintillator materials. Therefore, the fabrication of scintillators with a high proportion of fast components in the scintillation response is of great interest to material scientists. By applying the defect engineering strategy in advanced optical Lu3Al5O12:Ce,Mg (LuAG:Ce,Mg) ceramics, an ultrahigh fast scintillation proportion can be achieved with a slight loss of fast scintillation light. Moreover, low-temperature thermoluminescence (TSL) investigations revealed that the intensities of all the TSL peaks decreased in the Mg2+-codoped samples. The slight loss of fast scintillation light observed was explained by density functional theory (DFT) calculations. The effect of {Ce3+–Mg2−} pairs on emission quenching was compared with that of {Ce3+–Ca2−} pairs. As a consequence, the 0.3 at% Mg2+-codoped ceramic sample has an LY0.5µs/LY10µs ratio of 99.8%, which is better than those reported for isostructural ceramics and single crystals. We conclude with a discussion of the role of Mg2+ co-doping and future research directions concerning other oxide scintillators.

Název v anglickém jazyce

Defect engineering in Mg2+ co-doped LuAG:Ce ceramics: towards ultrahigh fast scintillation proportion

Popis výsledku anglicky

A slow scintillation component due to charge carrier capture at point defects is a serious issue in scintillator materials. Therefore, the fabrication of scintillators with a high proportion of fast components in the scintillation response is of great interest to material scientists. By applying the defect engineering strategy in advanced optical Lu3Al5O12:Ce,Mg (LuAG:Ce,Mg) ceramics, an ultrahigh fast scintillation proportion can be achieved with a slight loss of fast scintillation light. Moreover, low-temperature thermoluminescence (TSL) investigations revealed that the intensities of all the TSL peaks decreased in the Mg2+-codoped samples. The slight loss of fast scintillation light observed was explained by density functional theory (DFT) calculations. The effect of {Ce3+–Mg2−} pairs on emission quenching was compared with that of {Ce3+–Ca2−} pairs. As a consequence, the 0.3 at% Mg2+-codoped ceramic sample has an LY0.5µs/LY10µs ratio of 99.8%, which is better than those reported for isostructural ceramics and single crystals. We conclude with a discussion of the role of Mg2+ co-doping and future research directions concerning other oxide scintillators.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Advanced Ceramics

ISSN

2226-4108

e-ISSN

2227-8508

Svazek periodika

14

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

CN - Čínská lidová republika

Počet stran výsledku

10

Strana od-do

9221148

Kód UT WoS článku

001596855700001

EID výsledku v databázi Scopus

2-s2.0-105023483097