Defect engineering in Ce-doped aluminum garnet single crystal scintillators

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F14%3A00435845" target="_blank" >RIV/68378271:_____/14:00435845 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/14:00218453

Výsledek na webu

<a href="http://dx.doi.org/10.1021/cg501005s" target="_blank" >http://dx.doi.org/10.1021/cg501005s</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/cg501005s" target="_blank" >10.1021/cg501005s</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Defect engineering in Ce-doped aluminum garnet single crystal scintillators

Popis výsledku v původním jazyce

Mg-codoped Lu3Al5O12:Ce single crystal scintillators were prepared by a micropulling down method in a wide concentration range from 0 to 3000 ppm of Mg codopant. Their structure and chemical composition were checked by X-ray diffraction and electron probe microanalysis techniques. Absorption and luminescence spectra, photoluminescence decays, and thermoluminescence glow curves were measured together with several other scintillation characteristics, namely, the scintillation decay, light yield, afterglow, and radiation damage to reveal the effect of Mg codoping. Several material characteristics manifest a beneficial effect of Mg codopant. We propose a model explaining the mechanism of material improvement which is based on the stabilization of a part ofthe cerium dopant in the tetravalent charge state. The stable Ce4+ center provides an additional fast radiative recombination pathway in the scintillation mechanism and efficiently competes with electron traps in garnet scintillators.

Název v anglickém jazyce

Defect engineering in Ce-doped aluminum garnet single crystal scintillators

Popis výsledku anglicky

Mg-codoped Lu3Al5O12:Ce single crystal scintillators were prepared by a micropulling down method in a wide concentration range from 0 to 3000 ppm of Mg codopant. Their structure and chemical composition were checked by X-ray diffraction and electron probe microanalysis techniques. Absorption and luminescence spectra, photoluminescence decays, and thermoluminescence glow curves were measured together with several other scintillation characteristics, namely, the scintillation decay, light yield, afterglow, and radiation damage to reveal the effect of Mg codoping. Several material characteristics manifest a beneficial effect of Mg codopant. We propose a model explaining the mechanism of material improvement which is based on the stabilization of a part ofthe cerium dopant in the tetravalent charge state. The stable Ce4+ center provides an additional fast radiative recombination pathway in the scintillation mechanism and efficiently competes with electron traps in garnet scintillators.

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

2014

Kód důvěrnosti údajů

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

Název periodika

Crystal Growth & Design

ISSN

1528-7483

e-ISSN

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Svazek periodika

14

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

4827-4833

Kód UT WoS článku

000341226500069

EID výsledku v databázi Scopus

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