Influence of Ti4+ on the long lasting luminescence of Sr2SiO4:Eu2+

Karol Szczodrowski , Alicja Chruścińska , Justyna Barzowska , Krzysztof Przegiętka , Krzysztof Anders , Ryszard Piramidowicz , Marek Grinberg

Abstract

The Sr2Si0.95Ti0.05O4:Eu2+ phosphor was synthesized using titanium modified silica SBA-15 or titania as titanium precursors via a solid state synthesis method. The phase composition of samples was investigated by powder XRD technique. The SEM pictures enabled study of the influence of Ti4+ precursors on the materials' morphology. The results of versatile optical characterization pointed out that titanium incorporation causes the extending of the persistent luminescence time and does not change the basic spectral properties of the parent phosphor. The persistent luminescence phenomenon results from the presence of point defects in the lattice (ion vacancies) that play a role in electron or hole traps. It was found that both the concentration and distribution of traps in Sr2Si0.95Ti0.05O4:Eu2+ depends on the form of the titanium precursor used in the synthesis. The trap parameters were characterized by thermoluminescence measurements and luminescence kinetics analysis.
Author Karol Szczodrowski (FMPI / IEP)
Karol Szczodrowski,,
- Institute of Experimental Physics
, Alicja Chruścińska
Alicja Chruścińska,,
-
, Justyna Barzowska (FMPI / IEP)
Justyna Barzowska,,
- Institute of Experimental Physics
, Krzysztof Przegiętka
Krzysztof Przegiętka,,
-
, Krzysztof Anders
Krzysztof Anders,,
-
, Ryszard Piramidowicz
Ryszard Piramidowicz,,
-
, Marek Grinberg (FMPI / IEP)
Marek Grinberg,,
- Institute of Experimental Physics
Journal seriesRSC Advances, ISSN 2046-2069, (A 30 pkt)
Issue year2015
Vol5
No80
Pages65236-65244
Publication size in sheets0.5
DOIDOI:10.1039/C5RA09999D
URL http://pubs.rsc.org/en/content/articlepdf/2015/ra/c5ra09999d
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne (CC-BY-NC); with publication
Score (nominal)35
ScoreMinisterial score = 35.0, 20-12-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 20-12-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2015 = 3.289 (2) - 2015=3.485 (5)
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