Journal
MATERIALS LETTERS
Volume 65, Issue 19-20, Pages 2920-2922Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2011.02.067
Keywords
LiInO2; Luminescence; Sol-gel process
Funding
- National Science Council of the Republic of China, Taiwan [NSC 99-2221-E-492-023]
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Synthesis and luminescence properties of LiInO2 nanocrystals by the sal-gel process were investigated. The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence spectroscopy and absorption spectra. The well-crystallized tetragonal LiInO2 can be obtained by heat treatment above 600 degrees C from XRD. The excitation wavelengths at about 246 nm were associated with charge transfer between In and O with In3+ ions in octahedral coordination. The PL spectra excited at 246 nm have a broad and strong emission band maximum at 391 nm, corresponding to the self-activated luminescence. The optical absorption spectra of the 600 degrees C sample exhibited the band gap energies of 3.7 eV. (C) 2011 Elsevier B.V. All rights reserved.
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