Preparation, luminescence and structural properties of RE-doped RbLaS2 compounds

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00374678" target="_blank" >RIV/68378271:_____/11:00374678 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21340/11:00181794

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.actamat.2011.06.019" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2011.06.019</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2011.06.019" target="_blank" >10.1016/j.actamat.2011.06.019</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Preparation, luminescence and structural properties of RE-doped RbLaS2 compounds

Popis výsledku v původním jazyce

Rare-earth(RE = Ce, Pr, Sm, Eu, Tb)doped ternary sulfides having the general formula RbLa0.99RE0.01S2 and undoped RbLaS2 were synthesized. X-ray powder diffraction confirmed the single crystalline phase of the rhombohedral lattice system (space group R-3m, ?-NaFeO2 structure type) with hexagonality c/a = 5.34, consistent with the already reported RbLaS2 structure. Time-resolved luminescence spectroscopy was employed to investigate radioluminescence, photoluminescence, decay kinetics and absorption spectra. An RbLaS2 band edge at 322 nm was found and characteristic Pr3+, Sm3+ and Tb3+ 4f?4f emission lines in the visible spectral range were observed. The charge transfer transitions in the Pr3+- and Sm3+-related excitation spectra in the range 330?350 nmare described and the efficient energy transfer from the host to the emission centers is revealed. We discuss the potential for application in field emission displays, white LED solid-state lighting and X-ray phosphors.

Název v anglickém jazyce

Preparation, luminescence and structural properties of RE-doped RbLaS2 compounds

Popis výsledku anglicky

Rare-earth(RE = Ce, Pr, Sm, Eu, Tb)doped ternary sulfides having the general formula RbLa0.99RE0.01S2 and undoped RbLaS2 were synthesized. X-ray powder diffraction confirmed the single crystalline phase of the rhombohedral lattice system (space group R-3m, ?-NaFeO2 structure type) with hexagonality c/a = 5.34, consistent with the already reported RbLaS2 structure. Time-resolved luminescence spectroscopy was employed to investigate radioluminescence, photoluminescence, decay kinetics and absorption spectra. An RbLaS2 band edge at 322 nm was found and characteristic Pr3+, Sm3+ and Tb3+ 4f?4f emission lines in the visible spectral range were observed. The charge transfer transitions in the Pr3+- and Sm3+-related excitation spectra in the range 330?350 nmare described and the efficient energy transfer from the host to the emission centers is revealed. We discuss the potential for application in field emission displays, white LED solid-state lighting and X-ray phosphors.

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

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Svazek periodika

59

Číslo periodika v rámci svazku

16

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

6219-6227

Kód UT WoS článku

000294936600002

EID výsledku v databázi Scopus

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