Photoluminescent properties of LiInO2 nanocrystals |
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| Authors: | Yu-Jen Hsiao Shang-Chou Chang |
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| Affiliation: | 1. National Nano Device Laboratories, Tainan City 74147, Taiwan;2. Department of Electrical Engineering, Kun Shan University, Da-Wan Road, Tainan City 71003, Taiwan;1. Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, Wuhan 430074, People''s Republic of China;2. Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan 430074, People''s Republic of China;1. Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education, Hebei University, Baoding 071002, PR China;2. Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China;3. Department of Chemistry, Tang Shan Normal University, Tangshan 063000, PR China;4. School of Chemistry and Chemical Engineering, Yantai University, Yantai 264005, PR China |
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| Abstract: | Synthesis and luminescence properties of LiInO2 nanocrystals by the sol–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 °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 °C sample exhibited the band gap energies of 3.7 eV. |
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