Sol-gel synthesis and luminescence of undoped and Mn-doped zinc orthosilicate phosphor nanocomposites

被引：15
作者：
El Ghoul, J. [1 ]
El Mir, L. [1 ,2 ]
机构：
[1] Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm, Cite Erriadh Manara Zrig 6072, Gabes, Tunisia
[2] Al Imam Mohammad Ibn Saud Islamic Univ IMSIU, Coll Sci, Dept Phys, Taipei 11623, Taiwan
来源：
JOURNAL OF LUMINESCENCE | 2014年 / 148卷
关键词：
Zn2SiO4; Photoluminescence; Nanoparticles; Sol-gel; Optical materials; OPTICAL-PROPERTIES; LOW-TEMPERATURE; VISIBLE LUMINESCENCE; SUPERCRITICAL WATER; SILICATE; NANOPARTICLES; PHOTOLUMINESCENCE; ZN2SIO4; FILMS; VANADIUM;
D O I：
10.1016/j.jlumin.2013.11.090
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Zn2SiO4 and Zn2SiO4:Mn particles embedded in SiO2 host matrix prepared by sol gel method under supercritical conditions of ethyl alcohol in two steps. Were prepared by a simple solid-phase reaction under natural atmosphere at 1200 degrees C after the incorporation of ZnO and ZnO:Mn nanoparticles, respectively, in silica monolith. In the case of SiO2/Zn2SiO4 nanocomposite, the powder with an average particle size of 80 nm shows a strong luminescence band centred at around 760 nm in the visible range. In addition, the PL spectrum for the SiO2/Zn2SiO4:Mn nanocomposite showed that a dominant peak at 525 nm appeared, which originated from the T-4(1)-(6)A(1) transitions of Mn2+ ions. The luminescence properties of nanocomposites were characterized by emission and excitation spectra as well their dependencies of upon temperature and power excitation density. (C) 2013 Elsevier B.V. All rights reserved
引用
收藏
页码：82 / 88
页数：7
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