Eu2+ stabilization in YAG structure: optical and electron paramagnetic resonance study

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00464919" target="_blank" >RIV/68378271:_____/16:00464919 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/16:00304476

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jpcc.6b06397" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.6b06397</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.6b06397" target="_blank" >10.1021/acs.jpcc.6b06397</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Eu2+ stabilization in YAG structure: optical and electron paramagnetic resonance study

Popis výsledku v původním jazyce

A set of Eu-doped YAG phosphors was successfully synthesized by solid-state reaction under the Ar:5%H2 atmosphere. Their physical properties were investigated by means of XRD, time-resolved luminescence spectroscopy, and EPR. Special attention was given to well-grounded confirmation of Eu2+ occurrence in the YAG structure. The influence of Eu concentration, form of doping (EuS, EuF2, or Eu2O3) and number/form of annealing steps was studied. Corresponding characteristics were measured and evaluated in a broad temperature range. The correlated measurements showed that the single Eu2+ ions stabilized in YAG in the yttrium position are responsible for the 440 nm emission. The corresponding lowest energy excitation band is situated at 300 nm, and the radiative lifetime of Eu2+ emission is about 500 ns. A phenomenological model of excited state dynamics was used to explain the experimentally observed features. Possible practical exploitation of the Eu2+ center in the YAG host is discussed.

Název v anglickém jazyce

Eu2+ stabilization in YAG structure: optical and electron paramagnetic resonance study

Popis výsledku anglicky

A set of Eu-doped YAG phosphors was successfully synthesized by solid-state reaction under the Ar:5%H2 atmosphere. Their physical properties were investigated by means of XRD, time-resolved luminescence spectroscopy, and EPR. Special attention was given to well-grounded confirmation of Eu2+ occurrence in the YAG structure. The influence of Eu concentration, form of doping (EuS, EuF2, or Eu2O3) and number/form of annealing steps was studied. Corresponding characteristics were measured and evaluated in a broad temperature range. The correlated measurements showed that the single Eu2+ ions stabilized in YAG in the yttrium position are responsible for the 440 nm emission. The corresponding lowest energy excitation band is situated at 300 nm, and the radiative lifetime of Eu2+ emission is about 500 ns. A phenomenological model of excited state dynamics was used to explain the experimentally observed features. Possible practical exploitation of the Eu2+ center in the YAG host is discussed.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

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

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

120

Číslo periodika v rámci svazku

38

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

11

Strana od-do

21751-21761

Kód UT WoS článku

000384626800067

EID výsledku v databázi Scopus

2-s2.0-84989821173