Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00517933" target="_blank" >RIV/68378271:_____/19:00517933 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jlumin.2019.116545" target="_blank" >https://doi.org/10.1016/j.jlumin.2019.116545</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlumin.2019.116545" target="_blank" >10.1016/j.jlumin.2019.116545</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators

Popis výsledku v původním jazyce

Ce,Mg:LuYAG transparent ceramics were successfully fabricated by the solid state reaction method. The results of x-ray diffraction, photoluminescence, light yield, scintillation decay and thermoluminescence are analyzed to provide better understanding of the influence of the Y3+ admixture in LuAG on the lattice structure, electronic band structure, energy-level structure of Ce3+ centers and scintillation properties. The lattice parameter of Ce,Mg:LuYAG ceramics shows a linear growth with the increasing Y content, which is in agreement with Vegard's law. Reducing the Lu-to-Y ratio in the LuYAG matrix, the Ce3+ 5d1 energy level shifts to a lower energy, the forbidden gap becomes narrower and the electron traps become shallower. Furthermore, the increase of light yield and accelerated slow scintillation component are found with increasing Y admixture. The light yield of Ce,Mg:Lu0.5Y2.5Al5O12 ceramics is achieved to 24,500 ph/MeV with 1 μs shaping time.n

Název v anglickém jazyce

Electronic band modification for faster and brighter Ce,Mg:Lu3-xYxAl5O12 ceramic scintillators

Popis výsledku anglicky

Ce,Mg:LuYAG transparent ceramics were successfully fabricated by the solid state reaction method. The results of x-ray diffraction, photoluminescence, light yield, scintillation decay and thermoluminescence are analyzed to provide better understanding of the influence of the Y3+ admixture in LuAG on the lattice structure, electronic band structure, energy-level structure of Ce3+ centers and scintillation properties. The lattice parameter of Ce,Mg:LuYAG ceramics shows a linear growth with the increasing Y content, which is in agreement with Vegard's law. Reducing the Lu-to-Y ratio in the LuYAG matrix, the Ce3+ 5d1 energy level shifts to a lower energy, the forbidden gap becomes narrower and the electron traps become shallower. Furthermore, the increase of light yield and accelerated slow scintillation component are found with increasing Y admixture. The light yield of Ce,Mg:Lu0.5Y2.5Al5O12 ceramics is achieved to 24,500 ph/MeV with 1 μs shaping time.n

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

Journal of Luminescence

ISSN

0022-2313

e-ISSN

—

Svazek periodika

214

Číslo periodika v rámci svazku

Oct

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

000483151600027

EID výsledku v databázi Scopus

2-s2.0-85066980541