Up-conversion white emission and other luminescence properties of a YAG:Yb2O3·Tm2O3·Ho2O3@SiO2 glass-nanocomposite

Andrzej Marian Kłonkowski , Benedykt Kukliński , Mariusz Kubus , Jacek Ryl , Karol Szczodrowski , Dorota Wileńska , H.-Jürgen Meyer

Abstract

We report on a glass-nanocomposite material consisting of yttrium aluminum garnet (Y3Al5O12, YAG) nanocrystals codoped with Yb3+, Tm3+ and Ho3+ ions as well as entrapped into a SiO2 xerogel. This 94YAG$5Yb2O3$0.8Tm2O3$0.2Ho2O3@SiO2(abbr. YAG:YbTmHo@SiO2) nanocomposite material has been prepared by sol–gel procedure. Its structure and morphology has been characterized by means of X-ray diffraction (XRD) and scanning electron microscope (SEM) techniques as well as energy dispersive X-ray (EDX), X-ray photoelectron (XPS) and luminescence spectroscopies. The luminescent glass- nanocomposite exhibited an up-conversion effect under lexc¼ 980 nm and emission when excited under 355 nm in steady-state conditions. Then time-resolved luminescence emission was observed, when the sample was excited at 290 and 355 nm by a pulse laser. Average decay times for the SiO2 matrix and for some transitions of the Tm3+ and Ho3+ dopants present in the YAG:YbTmHo@SiO2 material have been evaluated. The luminescent nanocomposite when excited under 290 or 355 nm wavelengths in both conditions emits blue light. However, the nanocomposite is promising as a single-source white-light phosphor owing to its up-conversion luminescence under 980 nm excitation. Such optical features make the studied material an alternative phosphor.
Author Andrzej Marian Kłonkowski WCh
Andrzej Marian Kłonkowski,,
- Faculty of Chemistry
, Benedykt Kukliński IFD
Benedykt Kukliński,,
- Institute of Experimental Physics
, Mariusz Kubus
Mariusz Kubus,,
-
, Jacek Ryl
Jacek Ryl,,
-
, Karol Szczodrowski IFD
Karol Szczodrowski,,
- Institute of Experimental Physics
, Dorota Wileńska PFotokatalizy
Dorota Wileńska,,
- Laboratory of Photocatalysis
, H.-Jürgen Meyer
H.-Jürgen Meyer,,
-
Journal seriesRSC Advances, ISSN 2046-2069
Issue year2018
Vol8
No20
Pages11006-11013
Publication size in sheets0.5
DOIDOI:10.1039/C8RA00118A
URL http://pubs.rsc.org/en/content/articlepdf/2018/ra/c8ra00118a
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa - Użycie Niekomercyjne (CC-BY-NC); with publication
Score (nominal)35
ScoreMinisterial score = 30.0, 03-04-2018, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 03-04-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 3.108 (2) - 2016=3.257 (5)
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