Facile Microwave-Assisted Synthesis of Lanthanide Doped CaTiO3 Nanocrystals

被引：7

作者：

Pereira, Sandra C. ^{[1
]}

de Figueiredo, Alberthmeity T. ^{[1
]}

Barrado, Cristiano M. ^{[1
]}

Stoppa, MarceloH. ^{[2
]}

Dwivedi, Yashashchandra ^{[3
]}

Li, Maximo S. ^{[4
]}

Longo, Elson ^{[5
]}

机构：

[1] UFG, Dept Quim, BR-75704020 Catalao, GO, Brazil

[2] UFG, Dept Matemat, BR-75704020 Catalao, Go, Brazil

[3] Natl Inst Technol Kurukshetra, Dept Phys, Kurukshetra 136119, Haryana, India

[4] Univ Sao Paulo, Inst Fis, BR-13566590 Sao Carlos, SP, Brazil

[5] Univ Estadual Sao Paulo UNESP, Inst Quim, INCTMN, BR-14801970 Araraquara, SP, Brazil

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2015年 / 26卷 / 11期

关键词：

luminescence; spectroscopy; lanthanide elements; defect emissions; nanophosphors; SOLID-STATE REACTION; PHOTOCATALYTIC ACTIVITY; DIELECTRIC-PROPERTIES; HYDROTHERMAL METHOD; X-RAY; PEROVSKITE; PHOTOLUMINESCENCE; SIZE; DIFFRACTION; PARTICLES;

D O I：

10.5935/0103-5053.20150229

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This article discusses a simple approach for the microwave-assisted synthesis of good quality nanosized calcium titanate crystals doped with trivalent Tm and Yb lanthanide ions. The prepared nanoparticles had a microcube-like structure and a crystallite size of ca. 47 nm. The structure of the nanocrystals was analyzed by X-ray diffraction (XRD) and scanning electron microscopy (SEM), and their spectroscopic behavior was examined at a laser excitation wavelength of 350.7 nm. It was found that doping CaTiO3 nanocrystals with Yb and Tm leads to about 250-fold brighter photoluminescence (PL) emissions in the blue and near-infrared regions than that emitted by pure CaTiO3 nanocrystals. The PL emission was correlated with the structural

引用

页码：2339 / 2345

页数：7