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

页码：709 / 712

页数：4

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