Host-Sensitized Luminescence of Nd3+ and Sm3+ Ions Incorporated in Anatase Titania Nanocrystals

被引：114

作者：

Luo, Wenqin ^{[1
]}

Li, Renfu ^{[1
]}

Chen, Xueyuan ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Optoelect Mat Chem & Phys, Fuzhou 350002, Fujian, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2009年 / 113卷 / 20期

关键词：

NEAR-INFRARED EMISSION; TIO2; THIN-FILMS; ENERGY-TRANSFER; LANTHANIDE IONS; PHOTOLUMINESCENCE PROPERTIES; SOL-GEL; 2-PHOTON-SENSITIZED LUMINESCENCE; SEMICONDUCTOR NANOPARTICLES; TRIVALENT EUROPIUM; EU3+;

D O I：

10.1021/jp901862k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A sol-gel solvothermal method was introduced to incorporate Nd3+ and Sm3+ ions into TiO2 nanoparticles. Intense and well-resolved emission lines from Nd3+ or Sm3+ ions were realized upon excitation above the TiO2 bandgap at room temperature. The sensitized emissions of Nd3+ or Sm3+ were found to be much more efficient than a direct excitation of lanthanide ions (Ln(3+)). Multiple site emissions of Nd3+ and Sm3+ were detected by means of site-selective spectroscopy at 10 K. Moreover, a possible host-to-Ln(3+) sensitization mechanism was proposed.

引用

收藏

页码：8772 / 8777

页数：6

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