Enhanced Luminescence of Eu-Doped TiO2 Nanodots

被引：47

作者：

Luo, Ming ^{[1
]}

Cheng, Kui ^{[1
]}

Weng, Wenjian ^{[1
]}

Song, Chenlu ^{[1
]}

Du, Piyi ^{[1
]}

Shen, Ge ^{[1
]}

Xu, Gang ^{[1
]}

Han, Gaorong ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Mat Sci & Engn, State Key Lab Silicon Mat, Hangzhou 310027, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2009年 / 4卷 / 08期

关键词：

TiO2; Eu3+; Nanodots; Phase-separation-induced self-assembly; Luminescence; TITANIA THIN-FILMS; SURFACE TENSION; ENERGY-TRANSFER; PHOTOLUMINESCENCE; PHOSPHORS; EMISSION; CELLS;

D O I：

10.1007/s11671-009-9319-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Monodisperse and spherical Eu-doped TiO2 nanodots were prepared on substrate by phase-separation-induced self-assembly. The average diameters of the nanodots can be 50 and 70 nm by changing the preparation condition. The calcined nanodots consist of an amorphous TiO2 matrix with Eu3+ ions highly dispersed in it. The Eu-doped TiO2 nanodots exhibit intense luminescence due to effective energy transfer from amorphous TiO2 matrix to Eu3+ ions. The luminescence intensity is about 12.5 times of that of Eu-doped TiO2 film and the luminescence lifetime can be as long as 960 mu s.

引用

页码：809 / 813

页数：5

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