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Structural and luminescent study of TeO2-BaO-Bi2O3-Ag glass system doped with Eu3+ and Dy3+ for possible color-tunable phosphor application
Abstract
Tellurite glass systems of 73TeO2-4BaO-3Bi2O3-1Ag:xEu2O3-(2-x)Dy2O3 (where x = 0.5, 1, 1.5, 2 in molar ratio) composition have been successfully synthesized. In order to acquire Ag nanoparticles, materials have been heat treated at 350 °C in the air atmosphere. Structural properties of obtained samples were evaluated with various techniques. X-Ray Diffraction (XRD) measurements indicated that obtained materials are amorphous in nature. UV–vis results presented transitions characteristic to Dy3+ and Eu3+ ions. Additionally, X-Ray Photoelectron Spectroscopy (XPS) analysis indicated the presence of silver in metallic form. Photoluminescence measurements shown influence of Ag nanoparticles on emission characteristics. Simultaneous emission of Dy3+ and Eu3+ has been observed when samples were excited with λexc = 390 nm. Change of the emission color induced by heat treatment has been observed and described in case of x = 1 glass series. According to CIE results emission color changes as Eu/Dy ratio and heat treatment time are changed. Emission shifts from reddish-orange to yellowish white color. Obtained photoluminescence results confirm that synthesized materials are good candidates for color tunable phosphors.
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Authors (7)
-
Anna Synak
- Uniwersytet Gdański, Wydział Matematyki, Fizyki i Informatyki Instytut Fizyki Doświadczalnej
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Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
OPTICAL MATERIALS
no. 79,
pages 390 - 396,
ISSN: 0925-3467 - Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Lewandowski T., Seweryński C., Walas M., Łapiński M., Synak A., Sadowski W., Kościelska B.: Structural and luminescent study of TeO2-BaO-Bi2O3-Ag glass system doped with Eu3+ and Dy3+ for possible color-tunable phosphor application// OPTICAL MATERIALS. -Vol. 79, (2018), s.390-396
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.optmat.2018.03.031
- Verified by:
- Gdańsk University of Technology
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