Structural and luminescent study of TeO2-BaO-Bi2O3-Ag glass system doped with Eu3+ and Dy3+ for possible color-tunable phosphor application

被引：16
作者：
Lewandowski, Tomasz [1 ]
Sewerynski, Cezary [1 ]
Walas, Michalina [1 ]
Lapinski, Marcin [1 ]
Synak, Anna [2 ]
Sadowski, Wojciech [1 ]
Koscielska, Barbara [1 ]
机构：
[1] Gdansk Univ Technol, Fac Appl Phys & Math, Dept Solid State Phys, Gabriela Narutowicza 11-12, PL-80233 Gdansk, Poland
[2] Univ Gdansk, Fac Math Phys & Informat, Inst Expt Phys, Wita Stwosza 57-246, PL-80952 Gdansk, Poland
来源：
OPTICAL MATERIALS | 2018年 / 79卷
关键词：
Silver nanoparticles; Luminescence; Phosphor; Tellurite glass; UP-CONVERSION EMISSION; TELLURITE GLASS; RARE-EARTH; ALUMINOBOROSILICATE GLASSES; OPTICAL-PROPERTIES; ENERGY-TRANSFER; DY3+/EU3+;
D O I：
10.1016/j.optmat.2018.03.031
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Tellurite glass systems of 73TeO(2)-4BaO-3Bi(2)O(3)-1Ag:xEu(2)O(3)-(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 degrees 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 lambda(exc) = 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. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：390 / 396
页数：7
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