White emitting GeO2-PbO-Bi2O3-SrF2 glass and nano-glass ceramics co-doped with Eu3+, Tb3+ and Tm3+ ions

Andrzej Marian Kłonkowski , Wiesław Wiczk , Karol Szczodrowski , Dorota Wileńska , Natalia Górecka , Małgorzata Szyszkowska

Abstract

Tb3+ and Tm3+ ions. Besides for comparison glasses singly doped with Eu3+, Tb3+ or Tm3+ and a glass doubly co-doped with Eu3+ and Tb3+were studied. The singly Tb3+ doped glass did not exhibit cross-relaxation effect. In the case of the di-doped glass energy transfers Tb3+ → Eu3+ was certified. Then, for the tri-doped glass energy transfers Tb3+ → Eu3+ and in reverse Eu3+ → Tb3+ as well as Tm3+ → Tb3+ were observed. In the emission spectrum of the triply co-doped devitrified glass, similarly as in the other Eu3+ doped glasses, band peaked at 612 nm ascribed to 5D0 → 7F2 transition in Eu3+ was dominated above the 5D0 → 7F2 band. It suggests that the majority of Eu3+ (and very probably also Tb3+ and Tm3+) ions were incorporated into the residual vitreous phase of the glass-ceramics. Reduced luminescence lifetimes τ1 of the Tb3+ and Tm3+ dopants in the triply co-doped glass in comparison to τ values of these dopants singly embedded in the glasses additionally confirms presence of the energy transfer effects in the tri-doped material. Devitrification of the tri-doped glassy phosphor did not improve its white color emission.
Author Andrzej Marian Kłonkowski (FCh)
Andrzej Marian Kłonkowski,,
- Faculty of Chemistry
, Wiesław Wiczk (FCh / DBCh / LP)
Wiesław Wiczk,,
- Laboratory of Photobiophysics
, Karol Szczodrowski (FMPI / IEP)
Karol Szczodrowski,,
- Institute of Experimental Physics
, Dorota Wileńska (FCh / DET / LPh)
Dorota Wileńska,,
- Laboratory of Photocatalysis
, Natalia Górecka (FMPI / IEP)
Natalia Górecka,,
- Institute of Experimental Physics
, Małgorzata Szyszkowska (FCh / DBCh / LP)
Małgorzata Szyszkowska,,
- Laboratory of Photobiophysics
Other language title versions
Journal seriesJournal of Alloys and Compounds, ISSN 0925-8388, (A 35 pkt)
Issue year2017
Vol705
Pages539-549
Publication size in sheets0.5
Keywords in Englishglass, glass-ceramics, lanthanide ions, luminescence, energy transfer, white phosphor
DOIDOI:10.1016/j.jallcom.2017.02.153
URL http://doi.org/10.1016/j.jallcom.2017.02.153
Languageen angielski
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: 2016 = 3.133 (2) - 2016=2.919 (5)
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