Defect states and temperature stability of Eu2+ center in Eu-doped yttrium aluminum garnet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00476235" target="_blank" >RIV/68378271:_____/17:00476235 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.jlumin.2017.05.065" target="_blank" >http://dx.doi.org/10.1016/j.jlumin.2017.05.065</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jlumin.2017.05.065" target="_blank" >10.1016/j.jlumin.2017.05.065</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Defect states and temperature stability of Eu2+ center in Eu-doped yttrium aluminum garnet

Popis výsledku v původním jazyce

We study defect states in Eu-doped Y3Al5O12 powder by thermally stimulated luminescence (TSL) in the temperature range 77–500 K. We identify the main TSL peaks, analyze them by the initial rise technique and calculate the characteristic parameters of the corresponding traps. Tunneling of charge carriers between traps and recombination centers up to about 265 K is observed and discussed. Recent study established the presence of both Eu2+ and Eu3+ centers in the studied Y3Al5O12 powder. The TSL spectra show that Eu2+ and Eu3+ centers compete in the charge carrier capture. We show that previously observed Eu2+nluminescence quenching is due to both classical thermal quenching and thermal ionization of the Eu2+ excited state. We model the temperature dependence of the delayed recombination intensity.

Název v anglickém jazyce

Defect states and temperature stability of Eu2+ center in Eu-doped yttrium aluminum garnet

Popis výsledku anglicky

We study defect states in Eu-doped Y3Al5O12 powder by thermally stimulated luminescence (TSL) in the temperature range 77–500 K. We identify the main TSL peaks, analyze them by the initial rise technique and calculate the characteristic parameters of the corresponding traps. Tunneling of charge carriers between traps and recombination centers up to about 265 K is observed and discussed. Recent study established the presence of both Eu2+ and Eu3+ centers in the studied Y3Al5O12 powder. The TSL spectra show that Eu2+ and Eu3+ centers compete in the charge carrier capture. We show that previously observed Eu2+nluminescence quenching is due to both classical thermal quenching and thermal ionization of the Eu2+ excited state. We model the temperature dependence of the delayed recombination intensity.

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

2017

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

190

Číslo periodika v rámci svazku

Oct

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

309-313

Kód UT WoS článku

000405537100046

EID výsledku v databázi Scopus

2-s2.0-85019710190