NDLI: Optimization of photoluminescence of Y(2)O(3):Eu and Gd(2)O(3):Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes.

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Optimization of photoluminescence of Y(2)O(3):Eu and Gd(2)O(3):Eu phosphors synthesized by thermolysis of 2,4-pentanedione complexes.

Content Provider	Semantic Scholar
Author	Antic, Bratislav Rogan, Jelena Kremenović, Aleksandar Nikolić, Aleksandar S. Vučinić-Vasić, M. Bozanic, D. K. Goya, Gerardo F. Colomban, Ph
Copyright Year	2010
Abstract	Spherical shaped nanoparticles of series Y(2 - x)Eu(x)O(3) (x = 0.06, 0.10, 0.20, and 2) and Gd(2 - x)Eu(x)O(3) (x = 0.06, 0.10) were prepared by thermolysis of 2,4-pentanedione complexes of Y, Gd, and Eu. The bixbyite phase of Gd(2 - x)Eu(x)O(3) samples was formed at 500 degrees C, whereas the thermal decomposition of Y and Eu complexes' mixtures occurred at higher temperatures. Linearity in the concentration dependence on lattice parameter confirmed the formation of solid solutions. The distribution of Eu(3+) in Gd(2 - x)Eu(x)O(3) was changed with thermal annealing: in the as-prepared sample (x = 0.10) the distribution was preferential at C(3i) sites while in the annealed samples, Eu(3+) were distributed at both C(2) and C(3i) sites. Rietveld refinement of site occupancies as well as emission spectra showed a random distribution of cations in Y(2 - x)Eu(x)O(3). The photoluminescence (PL) measurements of the sample showed red emission with the main peak at 614 nm ((5)D(0)-(7)F(2)). The PL intensity increased with increasing concentration of Eu(3+) in both series. Infrared excitation was required to obtain good Raman spectra. The linear dependence of the main Raman peak wavenumber offers a non-destructive method for monitoring the substitution level and its homogeneity at the micron scale.
Starting Page	245702
Ending Page	245702
Page Count	1
File Format	PDF HTM / HTML
DOI	10.1088/0957-4484/21/24/245702
PubMed reference number	20484791
Journal	Medline
Volume Number	21
Issue Number	24
Alternate Webpage(s)	http://www.unizar.es/gfgoya/index_archivos/PDF/Y2O3_Nanotechnology2010.pdf
Alternate Webpage(s)	https://doi.org/10.1088/0957-4484%2F21%2F24%2F245702
Journal	Nanotechnology
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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