Structural and optical properties of nanoparticulate Y2O3:Eu2O3 made by microwave plasma synthesis

被引：6
|
作者：
Kautsch, A. [1 ]
Brossmann, U. [1 ]
Krenn, H. [2 ]
Hofer, F. [3 ]
Szabo, D. V. [4 ]
Wuerschum, R. [1 ]
机构：
[1] Graz Univ Technol, Inst Mat Phys, A-8010 Graz, Austria
[2] Graz Univ, Inst Phys, A-8010 Graz, Austria
[3] Graz Univ Technol, Inst Electron Microscopy & Fine Struct Res, A-8010 Graz, Austria
[4] Inst Appl Mat Mat Proc Technol, Karlsruhe Inst Technol, D-76344 Eggenstein Leopoldshafen, Germany
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2011年 / 105卷 / 03期
关键词：
LUMINESCENCE PROPERTIES; NANOCRYSTALLINE Y2O3-EU3+; SIZE; YTTRIA;
D O I：
10.1007/s00339-011-6589-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanoparticulate Y2O3:Eu2O3 with a small, uniform particle size and a well-defined composition was synthesized using a low temperature microwave plasma process. The structural evolution and the luminescence properties were studied in different states of annealing and Eu2O3 addition using X-ray diffraction, transmission electron microscopy, and UV-photoluminescence spectroscopy. As synthesized, the samples were amorphous and showed only weak luminescence. Subsequent annealing steps from 500A degrees C to 800A degrees C lead to the formation and growth of cubic Y2O3:Eu2O3 nanocrystals (5-20 nm) and a concomitant strong increase of the luminescence yield already at small grain sizes in the range of 10 nm. No self-quenching effects were observed up to 11 mol% Eu2O (3).
引用
收藏
页码：709 / 712
页数：4
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