Luminescence of TiO2:Pr nanoparticles incorporated in silica aerogel

被引：31

作者：

Amlouk, A. ^{[1
]}

El Mir, L. ^{[1
]}

Kraiem, S. ^{[1
]}

Saadoun, M. ^{[2
]}

Alaya, S. ^{[1
]}

Pierre, A. C. ^{[3
]}

机构：

[1] Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm, Gabes 6072, Tunisia

[2] CRTE, Lab Photovoltaique & Semiconducteurs, Hammam Lif, Tunisia

[3] Univ Lyon 1, Inst Rech Catalyse & Environm Lyon Ircelyon, CNRS, UMR 5256, F-69622 Villeurbanne, France

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2008年 / 146卷 / 1-3期

关键词：

Pr3+; TiO2; nanocrystals; photoluminescence; sol-gel; xerogel;

D O I：

10.1016/j.mseb.2007.07.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The photoluminescence of praseodymium ions in SiO2/TiO2 glasses elaborated by the sol-gel method was reported. It is shown that Pr ions were embedded in TiO2 nanocrystals (tetragonal, rutile) surrounded by a SiO2 glass matrix. Photoluminescence (PL) and photoluminescence excitation (PLE) spectra revealed the presence of energy transfer between the host matrix states and Pr3+ ions. X-ray diffraction (XRD) spectra, specific surface area by the Brunauer, Emmett and Teller method (BET), transmission electron microscopy (TEM) and infrared (IR) absorption spectra of the samples have also been investigated. It is shown that the Pr3+ ions are not homogeneously distributed inside the glass matrix and that the lanthanide ion-doped TiO2 nanoparticules have higher surface area than the pure TiO2. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：74 / 79

页数：6

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