Energy Transfer and Scintillation Properties of Ce3+ Doped (LuYGd)(3)(AlGa)(5)O-12 Multicomponent Garnets

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F14%3A10284062" target="_blank" >RIV/00216208:11320/14:10284062 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/14:00456536

Výsledek na webu

<a href="http://dx.doi.org/10.1109/TNS.2013.2281234" target="_blank" >http://dx.doi.org/10.1109/TNS.2013.2281234</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/TNS.2013.2281234" target="_blank" >10.1109/TNS.2013.2281234</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy Transfer and Scintillation Properties of Ce3+ Doped (LuYGd)(3)(AlGa)(5)O-12 Multicomponent Garnets

Popis výsledku v původním jazyce

Photoluminescence, X-ray excited radioluminescence and photoelectron yield characteristics were studied in multicomponent GdGaYAG:Ce and GdGaLuAG:Ce garnet films grown by liquid phase epitaxy. Nonradiative energy transfer from Gd3+ to activator Ce3+ ionswas evidenced. At low Gd doping, < 5%, two virtually independent emission centers coexist, which compete for intensity: Ce3+ with fast 5d-4f emission and Gd3+ with slow 4f-4f emission. At higher Gd concentrations, the Ce3+ emission retrieves intensity due to the energy transferred from Gd3+ donors. At Gd concentration similar to 50% and above, the Gd3+ emission is suppressed due to energy migration and transfer to Ce3+ centers. In these samples, the host emission is also completely quenched and the best scintillator performance is achieved. Contrary to melt-grown crystals, no positive role of Ga substitution was found in epitaxial films.

Název v anglickém jazyce

Energy Transfer and Scintillation Properties of Ce3+ Doped (LuYGd)(3)(AlGa)(5)O-12 Multicomponent Garnets

Popis výsledku anglicky

Photoluminescence, X-ray excited radioluminescence and photoelectron yield characteristics were studied in multicomponent GdGaYAG:Ce and GdGaLuAG:Ce garnet films grown by liquid phase epitaxy. Nonradiative energy transfer from Gd3+ to activator Ce3+ ionswas evidenced. At low Gd doping, < 5%, two virtually independent emission centers coexist, which compete for intensity: Ce3+ with fast 5d-4f emission and Gd3+ with slow 4f-4f emission. At higher Gd concentrations, the Ce3+ emission retrieves intensity due to the energy transferred from Gd3+ donors. At Gd concentration similar to 50% and above, the Gd3+ emission is suppressed due to energy migration and transfer to Ce3+ centers. In these samples, the host emission is also completely quenched and the best scintillator performance is achieved. Contrary to melt-grown crystals, no positive role of Ga substitution was found in epitaxial films.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

—

Projekt

<a href="/cs/project/GAP204%2F12%2F0805" target="_blank" >GAP204/12/0805: Pokročilá materiálová řešení pro tenkovrstvé scintilátory a transformátory světla</a><br>

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

IEEE Transactions on Nuclear Science

ISSN

0018-9499

e-ISSN

—

Svazek periodika

61

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

282-289

Kód UT WoS článku

000334926500009

EID výsledku v databázi Scopus

—