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Monoclinic yttrium tantalate (M′-YTaO4, M′-YTO), and two different kinds of yttrium niobium-tantalate (M′-YTa0.85Nb0.15O4 (M′-YTNO) and Eu3+ doped M′-YTa0.85Nb0.15O4 (M′-YTNO:Eu3+)) were produced by sol–gel method and grown on single crystalline Si (100) substrate by spin coating approach. Structural properties and thermal behaviours of the films were characterized by means of X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), and thermogravimetry and differential thermal analysis (TG–DTA). Systematic Steady-state photoluminescence and lifetime measurements in a series of yttrium niobium-tantalate with varying amounts of Eu3+ were presented. The photoluminescence spectra of the films exhibited strong blue (380–400 nm) and red (614 nm) emissions upon ultraviolet excitation. Emission intensities were strongly dependent on the host lattice composition and film morphology. 1.5% Eu3+ doped films exhibited the brightest luminescence and long lifetime extending to 1.22 ms when excited at 254 nm. To the best of our knowledge, this is the first attempt in the production of M′-YTO, M′-YTNO, and M′-YTNO:Eu3+ films on single crystalline Si (100) substrate via sol–gel spin coating.


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Production, characterization, and luminescent properties of Eu3+ doped yttrium niobate–tantalate films

Show Author's information Serdar YILDIRIMa,b( )Selim DEMIRCIcKadriye ERTEKINdErdal CELIKb,eZumre Arican ALICIKUSf
The Graduate School of Natural and Applied Sciences, Dokuz Eylul University, Buca, 35390, Izmir, Turkey
Center for Fabrication and Applications of Electronic Materials (EMUM), Dokuz Eylul University, Buca, 35390, Izmir, Turkey
Department of Metallurgical and Materials Engineering, Marmara University, Goztepe Campus, 34722, Istanbul, Turkey
Department of Chemistry, Faculty of Science, Dokuz Eylul University, Buca, 35390, Izmir, Turkey
Department of Metallurgical and Materials Engineering, Dokuz Eylul University, Buca, 35390, Izmir, Turkey
Department of Radiation Oncology, Dokuz Eylul University, Balcova, 35340, Izmir, Turkey

Abstract

Monoclinic yttrium tantalate (M′-YTaO4, M′-YTO), and two different kinds of yttrium niobium-tantalate (M′-YTa0.85Nb0.15O4 (M′-YTNO) and Eu3+ doped M′-YTa0.85Nb0.15O4 (M′-YTNO:Eu3+)) were produced by sol–gel method and grown on single crystalline Si (100) substrate by spin coating approach. Structural properties and thermal behaviours of the films were characterized by means of X-ray diffraction (XRD), atomic force microscopy (AFM), scanning electron microscopy (SEM), and thermogravimetry and differential thermal analysis (TG–DTA). Systematic Steady-state photoluminescence and lifetime measurements in a series of yttrium niobium-tantalate with varying amounts of Eu3+ were presented. The photoluminescence spectra of the films exhibited strong blue (380–400 nm) and red (614 nm) emissions upon ultraviolet excitation. Emission intensities were strongly dependent on the host lattice composition and film morphology. 1.5% Eu3+ doped films exhibited the brightest luminescence and long lifetime extending to 1.22 ms when excited at 254 nm. To the best of our knowledge, this is the first attempt in the production of M′-YTO, M′-YTNO, and M′-YTNO:Eu3+ films on single crystalline Si (100) substrate via sol–gel spin coating.

Keywords:

yttrium tantalate, sol–gel, photoluminescence, lifetime, Eu doped
Received: 10 April 2016 Revised: 10 March 2018 Accepted: 11 July 2017 Published: 02 March 2017 Issue date: March 2017
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Publication history

Received: 10 April 2016
Revised: 10 March 2018
Accepted: 11 July 2017
Published: 02 March 2017
Issue date: March 2017

Copyright

© The author(s) 2016

Acknowledgements

This research was fully supported by Scientific and Technical Research Council of Turkey (TUBITAK) under Project No. SBAG-113S069.

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