Blue-green and red photoluminescence in CaTiO3:Sm

被引：50

作者：

de Figueiredo, Alberthmeiry T.

Longo, Valeria M.

de Lazaro, Sergio

Mastelaro, Valmor R.

De Vicente, Fábio S.

Hernandes, Antônio C.

Li, Máximo Siu

Varela, José A.

Longo, Elson

机构：

[1] Univ Fed Sao Carlos, LIEC, Dept Quim & Engn Mat, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP, Brazil

[3] UNESP, Inst Quim, LIEC, BR-14801970 Araraquara, SP, Brazil

来源：

JOURNAL OF LUMINESCENCE | 2007年 / 126卷 / 02期

关键词：

luminescence; order-disorder; optical materials; CT : Sm;

D O I：

10.1016/j.jlumin.2006.08.100

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Blue-green and red photoluminescence (PL) emission in structurally disordered CaTiO3:Sm (CT:Sm) powders was observed at room temperature with laser excitation at 350.7 nm. The perovskite-like titanate CT:Sm powders prepared by a soft chemical processing at different temperatures of annealing were structurally characterized by X-ray diffraction (XRD) and X-ray absorption near-edge structure (XANES). The results indicate that the generation of the broad PL band is related to order-disorder degree in the perovskitelike structure. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：403 / 407

页数：5

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