Preparation and fluorescence spectroscopy of bulk monoclinic Eu3+:Y2O3 and comparison to Eu3+:Y2O3 nanocrystals

被引：257

作者：

Williams, DK

Bihari, B

Tissue, BM ^{[1
]}

McHale, JM

机构：

[1] Virginia Polytech Inst & State Univ, Dept Chem, Blacksburg, VA 24061 USA

[2] Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 1998年 / 102卷 / 06期

关键词：

D O I：

10.1021/jp972996e

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：

We report the laser spectroscopic characterization of bulk monoclinic Eu3+:Y2O3, which was prepared by a high-temperature, high-pressure synthesis method. The bulk monoclinic phase has sharp spectral lines without the line broadening and "secondary phase" of Eu2+:Y2O3 nanocrystals. The unusual optical properties of site A in this material have been determined to be intrinsic to the monoclinic phase and are not a result of surface effects in the nanocrystals. The D-5(0) fluorescence life-times are longer in the nanocrystals than in the bulk material, indicating that there is no lifetime shortening in the nanocrystals due to quenching by the proximity of surface defects.

引用

页码：916 / 920

页数：5

共 25 条

[1] RESEARCH OPPORTUNITIES ON CLUSTERS AND CLUSTER-ASSEMBLED MATERIALS - A DEPARTMENT OF ENERGY, COUNCIL ON MATERIALS SCIENCE PANEL REPORT [J].