Study on Preparation and Characterization of the SiO2 Photonic Crystal

Yun Gao Cai; Xin Qi Li

doi:10.4028/www.scientific.net/KEM.773.123

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 773Study on Preparation and Characterization of the...

Study on Preparation and Characterization of the SiO₂ Photonic Crystal

Abstract:

SiO₂ colloidal particles at the size range of 270-910 nm were synthesized by hydrolysis of ethyl silicate (TEOS) in the mixed solvents of TEOS and water under the catalysis of ammonium water solution; the effect of the addition manner of the mixed solution of TEOS and ethanol through immediateness and drop by drop were discussed; besides, two dimentional (2-D) SiO₂ photonic crystals (PCs) with hexagonal arrangement structure were successfully prepared by the gravity sedimentation method. The X-ray diffraction (XRD) and scanning electron microcopy (SEM) were employed to analyze the crystallinity and morphology of the synthesized SiO₂ colloidal particles and the 2-D SiO₂ photonic crystals, the results show that during the progress of the synthesized SiO₂ colloidal particles by the Stöber method, the addition manner of the mixed solution of TEOS and ethanol through drop by drop instead of immediateness could avoid the double-sized SiO₂ colloidal particles in a certain extent effectively. The reasons for the experimental results in this investigation have been discussed.

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Periodical:

Key Engineering Materials (Volume 773)

Pages:

123-127

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.773.123

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Online since:

July 2018

Authors:

Yun Gao Cai*, Xin Qi Li

Keywords:

Addition Manner, SiO₂ Colloidal Particle, SiO₂ Photonic Crystal

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