Influence of Mg-to-Ce Concentration Ratio on Cathodoluminescence in LuAG and LuGAGG Single-Crystalline Films

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F19%3A00511622" target="_blank" >RIV/68081731:_____/19:00511622 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/19:10399551

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.201801016" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/pssa.201801016</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/pssa.201801016" target="_blank" >10.1002/pssa.201801016</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Mg-to-Ce Concentration Ratio on Cathodoluminescence in LuAG and LuGAGG Single-Crystalline Films

Popis výsledku v původním jazyce

The cathodoluminescence (CL) characterizations of Lu3Al5O12:Ce,Mg (LuAG:Ce,Mg) and of multicomponent (Lu0.25Gd0.74)(3)(Ga2.48Al2.52)O-12:Ce,Mg (LuGAGG:Ce,Mg) single-crystalline garnet films are supported by the optical absorption spectroscopy. Using this approach, the influence of the Mg-to-Ce concentration ratio on the CL spectra and the CL decay is analyzed. The crucial role of stable Ce4+ centers in CL is shown in Mg-rich film studies. Although the CL intensity is somewhat reduced, drastic improvements in timing performance are demonstrated, including the CL decay time as low as 4.2 ns and the afterglow as low as 0.015% at 500 ns after the e-beam excitation cutoff. These results predetermine the utilization of the LuAG:Ce,Mg and LuGAGG:Ce,Mg single-crystalline films in e-beam detection systems, where especially fast scintillator response is crucial.

Název v anglickém jazyce

Influence of Mg-to-Ce Concentration Ratio on Cathodoluminescence in LuAG and LuGAGG Single-Crystalline Films

Popis výsledku anglicky

The cathodoluminescence (CL) characterizations of Lu3Al5O12:Ce,Mg (LuAG:Ce,Mg) and of multicomponent (Lu0.25Gd0.74)(3)(Ga2.48Al2.52)O-12:Ce,Mg (LuGAGG:Ce,Mg) single-crystalline garnet films are supported by the optical absorption spectroscopy. Using this approach, the influence of the Mg-to-Ce concentration ratio on the CL spectra and the CL decay is analyzed. The crucial role of stable Ce4+ centers in CL is shown in Mg-rich film studies. Although the CL intensity is somewhat reduced, drastic improvements in timing performance are demonstrated, including the CL decay time as low as 4.2 ns and the afterglow as low as 0.015% at 500 ns after the e-beam excitation cutoff. These results predetermine the utilization of the LuAG:Ce,Mg and LuGAGG:Ce,Mg single-crystalline films in e-beam detection systems, where especially fast scintillator response is crucial.

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

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Physica Status Solidi. A

ISSN

1862-6300

e-ISSN

—

Svazek periodika

216

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

6

Strana od-do

1801016

Kód UT WoS článku

000476147900001

EID výsledku v databázi Scopus

2-s2.0-85069853868