Photoconversion from UV-to-yellow in Mn doped zinc silicate nanophosphor material

被引：18
作者：
El Mir, L. [1 ,2 ]
Omri, K. [2 ]
机构：
[1] Al Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Dept Phys, Riyadh 11623, Saudi Arabia
[2] Gabes Univ, Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm LaPhyMNE, Gabes, Tunisia
来源：
SUPERLATTICES AND MICROSTRUCTURES | 2014年 / 75卷
关键词：
Sol-gel; Zn2SiO4:Mn; Nanophosphors; Luminescence; Optical materials; OPTICAL-PROPERTIES; THIN-FILMS; LUMINESCENCE PROPERTIES; ZN2SIO4-MN PHOSPHOR; NANOPARTICLES; MANGANESE; EMISSION; SIO2/ZN2SIO4; COMPOSITE;
D O I：
10.1016/j.spmi.2014.07.021
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
A novel synthesis process of Mn doped beta-Zn2SiO4 yellow nano-phosphors based on sol gel method is presented. These samples were prepared by a simple solid-phase reaction under natural atmosphere at 1500 degrees C after the incorporation of ZnO:Mn nanopartides, in silica monolith. XRD showed the formation of zinc silicate beta-phase, which shows yellow luminescence. In addition, the as-synthesized beta-Zn2SiO4:Mn2+ nanophosphor exhibited intensive broad emission around 574 nm, which was attributed to the T-4(1)-(6)A(1) transition in Mn2+ ions. An exponential fitting analysis has been employed to obtain the lifetime of this yellow emission (574 nm), the average lifetime was found to be 13 ms. The luminescence properties of our nanophosphors were characterized by excitation and emission spectra as well as luminescence decay. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：89 / 98
页数：10
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