Photoluminescence properties of nanocrystalline Y2O3:Eu3+ in different environments

被引：54

作者：

Schmechel, R ^{[1
]}

Winkler, H

Li, XM

Kennedy, M

Kolbe, M

Benker, A

Winterer, M

Fischer, RA

Hahn, H

von Seggern, H

机构：

[1] Tech Univ Darmstadt, Inst Mat Sci, Elect Mat Div, D-64287 Darmstadt, Germany

[2] Ruhr Univ Bochum, Inst Inorgan Chem 2, D-44780 Bochum, Germany

[3] Tech Univ Darmstadt, Inst Mat Sci, Thin Films Div, D-64287 Darmstadt, Germany

来源：

SCRIPTA MATERIALIA | 2001年 / 44卷 / 8-9期

关键词：

optical spectroscopy; optical properties; rare earth;

D O I：

10.1016/S1359-6462(01)00687-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this study the optical properties of nanocrystalline europium doped yttria Y2O3:Eu3+ were investigated in dependence on different environments such as a silica based molecular sieve MCM-41, with a pore sizes of 2.7nm, a free nanopowder on air and in aqueous solution. All these results were compared to a commercial lamp phosphor powder with a grain size of about 5 mum. Investigated optical properties are the photoluminescence emission spectra, the excitation spectra, the lifetimes and the quantum efficiencies. Heavy differences of the change transfer process will be reported and discussed with respect to the structure. A low optical quantum efficiency of the nanoparticles is explained by changes in the crystal field. (C) 2001 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1213 / 1217

页数：5

共 14 条

[11] Recent achievements in research on phosphors for lamps and displays [J].