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

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

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

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Name of the periodical

Journal of Luminescence

ISSN

0022-2313

e-ISSN

—

Volume of the periodical

190

Issue of the periodical within the volume

Oct

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

5

Pages from-to

309-313

UT code for WoS article

000405537100046

EID of the result in the Scopus database

2-s2.0-85019710190