Photoluminescence in disordered Zn2TiO4

被引：68

作者：

Chaves, AC

Lima, SJG

Araújo, RCMU

Maurera, MAMA

Longo, E

Pizani, PS

Simoes, LGP

Soledade, LEB

Souza, AG

dos Santos, IMG ^{[1
]}

机构：

[1] Univ Fed Paraiba, CCEN, Dept Quim, LTM, BR-58059900 Joao Pessoa, Paraiba, Brazil

[2] Univ Fed Paraiba, CT, Dept Tecnol Mecan, LSR, BR-58059900 Joao Pessoa, Paraiba, Brazil

[3] UNESP, Inst Quim, CMDMC, BR-14800900 Araraquara, SP, Brazil

[4] Univ Fed Sao Carlos, Dept Fis, BR-13565905 Sao Carlos, SP, Brazil

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2006年 / 179卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

disordered materials; pechini; luminescence; titanate; spinel;

D O I：

10.1016/j.jssc.2005.12.018

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

In this work, the polymeric precursor method Was used to obtain disordered Zn2TiO4 powders, either Undoped or doped with Sn4+, Cr3+ and V5+, to be applied its photoluininescent material. The characterization was undertaken by means of thermal analysis (TG and DTA), X-ray diffraction (XRD), infrared spectroscopy (IR) and photoluminescence (PL). Previous works stated that titanate octahedra containing a short Ti-O distance show efficient luminescence at roorn temperature if these octahedra are isolated from each other. In the present work, the phenomenon was observed in condensed octahedra, sharing edges. The room temperature PL noticed in undoped Zn2TiO4 had its intensity increased by the dopant addition-the increase was of about 300% for V5+ doping 400% for Cr3+ and 800% for Sn4+. (c) 2005 Elsevier Inc. All rights reserved.

引用

页码：985 / 992

页数：8

共 41 条

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