Photoluminescence in amorphous zirconium titanate

Photoluminescence at room temperature was observed in amorphous zirconium titanate obtained from the polymeric precursor method. This was the first time in which PL was noticed in an amorphous compound made of two network formers. The PL spectra could be deconvoluted into two bands, whose center 1 w...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2004-02, Vol.78 (3), p.355-358
Main Authors: FREITAS, G. F. G, SOLEDADE, L. E. B, NASAR, R. S, LEITE, E. R, LONGO, E, PIZANI, P. S, BOSCHI, T. M, PASKOCIMAS, C. A, VARELA, J. A, MELO, D. M. A, CERQUEIRA, M
Format: Article
Language:English
Subjects:
Amorphous materials, glasses and other disordered solids
Band spectra
Bands
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Emission
Exact sciences and technology
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Photoluminescence
Physics
Polymeric precursors
Spectra
Zirconium
Zirconium titanates
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Summary:Photoluminescence at room temperature was observed in amorphous zirconium titanate obtained from the polymeric precursor method. This was the first time in which PL was noticed in an amorphous compound made of two network formers. The PL spectra could be deconvoluted into two bands, whose center 1 was located from 540 nm to 552 nm and center 2 from 625 nm to 641 nm. The co-existence of fivefold and sixfold oxygen coordination of titanium and/or zirconium could be the origin of the radiative recombination of electron-hole pairs in amorphous ZT, which may be responsible for the emission of the photoluminescence.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-003-2327-x