Low-temperature synthesis of nanosize Zn2SiO4:Mn2+ phosphor from the precursor sol in supercritical ethanol and its photoluminescent properties

被引：18

作者：

Miki, T

Ogawa, T

Isobe, T

Sfihi, H

机构：

[1] Keio Univ, Fac Sci & Technol, Dept Appl Chem, Yokohama, Kanagawa 2238522, Japan

[2] Ecole Super Phys & Chim Ind Ville Paris, Phys Quant Lab, CNRS, UMR 7142, F-75005 Paris, France

来源：

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY | 2004年 / 31卷 / 1-3期

关键词：

Zn2SiO4 : Mn2+; nanosize phosphor; photoluminescence; solvothermal reaction; supercritical ethanol;

D O I：

10.1023/B:JSST.0000047963.32672.a4

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The solvothermal reaction in supercritical ethanol produces nanosize Zn2SiO4:Mn2+ from the precursor sol derived from the mixture of zinc acetate, manganese acetate and TEOS. Spherical primary particles of 10-20 nm were grown to the rod-like particles of 10-30 nm diameter and 200-350 nm length by increasing the aging temperature from 200 to 265degreesC and by optimizing the water/ethanol ratio of sol. This crystal growth improved the intensity of green emission due to the d-d transition of Mn2+ through energy transfer from Zn2SiO4. We discuss the process of Zn2SiO4:Mn2+ crystal growth during the solvothermal reaction in supercritical ethanol.

引用

页码：73 / 77

页数：5

共 7 条

[1] Hydrothermal synthesis of metal oxide fine particles at supercritical conditions [J].