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Fabrication and Optical Properties of NiO-SiO2 Composite Photonic Crystals
Abstract:
NiO-SiO2 composite photonic crystals were fabricated by the self-assembly and the spin coating method. First, the SiO2 monodisperse colloidal spheres were fabricated by the Storber method and the opal structure was obtained by the vertical deposition method. After spin coating and sintering, the electrochromic material NiO was infiltrated in the opal template. The obtained NiO-SiO2 composite photonic crystal was characterized by X-ray diffraction (XRD), and the morphologies of SiO2 opals and the composite structures were characterized by SEM. The reflection spectra were measured and revealed that the periodic arrays exhibit a photonic band gap in the (111) direction.
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530-534
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October 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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