In this study, the optical properties of nanocrystalline europium doped yttria, were investigated in dependence on different caging hosts such as porous MCM-41, porous silica, and porous alumina with pore sizes ranging between 2.7 to 80 nm. These results were compared to nanopowders measured in air and aqueous solution whose particle sizes were 5 nm and 8 nm, respectively. All these results were compared to a commercial lamp phosphor powder with a grain size of about 5 μm. The structural properties of the samples were determined by x-ray diffraction and transmission electron microscopy. Investigated optical properties are the photoluminescence emission spectra, the excitation spectra, the lifetimes, and the quantum efficiencies. A heavy dependence of the charge transfer process on the surrounding will be reported and discussed.
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1 February 2001
Research Article|
February 01 2001
Luminescence properties of nanocrystalline in different host materials
R. Schmechel;
R. Schmechel
Darmstadt University of Technology, Institute of Materials Science, Electronic Materials Division, D-64287 Darmstadt, Germany
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M. Kennedy;
M. Kennedy
Darmstadt University of Technology, Institute of Materials Science, Electronic Materials Division, D-64287 Darmstadt, Germany
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H. von Seggern;
H. von Seggern
Darmstadt University of Technology, Institute of Materials Science, Electronic Materials Division, D-64287 Darmstadt, Germany
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H. Winkler;
H. Winkler
Ruhr-University Bochum, Institute of Inorganic Chemistry II, D-44780 Bochum, Germany
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M. Kolbe;
M. Kolbe
Ruhr-University Bochum, Institute of Inorganic Chemistry II, D-44780 Bochum, Germany
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R. A. Fischer;
R. A. Fischer
Ruhr-University Bochum, Institute of Inorganic Chemistry II, D-44780 Bochum, Germany
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Li Xaomao;
Li Xaomao
Darmstadt University of Technology, Institute of Materials Science, Thin Films Division, D-64287 Darmstadt, Germany
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A. Benker;
A. Benker
Darmstadt University of Technology, Institute of Materials Science, Thin Films Division, D-64287 Darmstadt, Germany
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M. Winterer;
M. Winterer
Darmstadt University of Technology, Institute of Materials Science, Thin Films Division, D-64287 Darmstadt, Germany
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H. Hahn
H. Hahn
Darmstadt University of Technology, Institute of Materials Science, Thin Films Division, D-64287 Darmstadt, Germany
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J. Appl. Phys. 89, 1679–1686 (2001)
Article history
Received:
March 13 2000
Accepted:
October 23 2000
Citation
R. Schmechel, M. Kennedy, H. von Seggern, H. Winkler, M. Kolbe, R. A. Fischer, Li Xaomao, A. Benker, M. Winterer, H. Hahn; Luminescence properties of nanocrystalline in different host materials. J. Appl. Phys. 1 February 2001; 89 (3): 1679–1686. https://doi.org/10.1063/1.1333033
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