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Investigation of Spectral Interactions between a SrAl2O4:Eu2+, Dy3+ Phosphor and Nano-Scale TiO2

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Abstract

Herein, we studied light induced interactions between two well-known luminescent materials, SrAl2O4:Eu2+, Dy3+ and nano-scale TiO2 in poly(methyl methacrylate) (PMMA). These two materials were chosen due to their stable nature, efficient spectral properties and more specifically, overlapping excitation/emission bands. When these materials were used together in 1:1 ratio by weight (w/w), the composite exhibited 76% enhancement in the emission intensity with respect to the individual phosphor. Although the luminescence mechanism of both materials is clarified in the literature, spectral interactions of them have not been studied up to now. In our opinion, the TiO2 nano-particles (TiO2 NPs) act as light-harvesting agents for the phosphor particles creating a substantial enhancement on the light absorption efficiency of the phosphor. Additionally, the TiO2 nanoparticles suggest a promising way to boost the phosphorescent activity of the SrAl2O4:Eu2+, Dy3+ by a cost-effective way and further investigation of the mechanism may be subject of future studies.

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Acknowledgments

All authors would like to thank to BAP funds of the Dokuz Eylul University (2017 KB Fen 033 and 2019 KB Fen 002). X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and photoluminescence (PL) measurements were performed in the Center for Fabrication and Applications of Electronic Materials (EMUM). We would like to thank all.

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Authors and Affiliations

  1. Center for Fabrication and Application of Electronic Materials, Dokuz Eylul University, 35390, Izmir, Turkey

    Sibel Oguzlar & Kadriye Ertekin

  2. Chemistry Technology Program, Izmir Vocational High School, Dokuz Eylul University, 35360, Izmir, Turkey

    Merve Zeyrek Ongun

  3. Faculty of Engineering, Department of Metallurgical and Materials Engineering, Dokuz Eylul University, 35390, Izmir, Turkey

    Ozgur Yasin Keskin, Funda Ak Azem & Isıl Birlik

  4. The Graduate School of Natural and Applied Sciences, Dokuz Eylul University, 35390, Izmir, Turkey

    Tülay Koc Delice

  5. Department of Chemistry, Faculty of Science, Dokuz Eylul University, 35390, Izmir, Turkey

    Kadriye Ertekin

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  1. Sibel Oguzlar
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  2. Merve Zeyrek Ongun
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  3. Ozgur Yasin Keskin
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Correspondence to Sibel Oguzlar.

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Oguzlar, S., Ongun, M.Z., Keskin, O.Y. et al. Investigation of Spectral Interactions between a SrAl2O4:Eu2+, Dy3+ Phosphor and Nano-Scale TiO2. J Fluoresc 30, 839–847 (2020). https://doi.org/10.1007/s10895-020-02555-6

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  • DOI: https://doi.org/10.1007/s10895-020-02555-6

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