Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 475, Issue 1-2, Pages 698-701Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2008.07.142
Keywords
CaNb2O6; Luminescence; Sol-gel process
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Funding
- National Science Council of Republic of China, Taiwan [96-2811-E-006-014]
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Synthesis and luminescence properties of CaNb2O6 oxides by the sol-gel process were investigated. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), photoluminescence spectroscopy and absorption spectra. The PL spectra excited at 257 nm have a broad and strong blue emission band maximum at 457 nm, corresponding to the self-activated luminescence of the niobate octahedra group [NbO6](7-). The optical absorption spectra of the 700 degrees C sample exhibited the band-gap energies of 3.53 eV. (C) 2008 Elsevier B.V. All rights reserved.
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