Improving the optical properties of vinyl-functionalized silica colloidal crystals by thermal annealing
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- DENG Tian-Song
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University
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- ZHANG Jun-Yan
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University
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- ZHU Kong-Tao
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University
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- ZHANG Qi-Feng
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University
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- WU Jin-Lei
- Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University
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Abstract
Three-dimensional vinyl-functionalized silica colloidal crystals (VFS-CCs), which the attenuation of the photonic bandgap could be significantly improved by thermal annealing, were fabricated by a gravity sedimentation process using monodisperse vinyl-functionalized silica spheres. With the increase of the annealing temperature from 60 to 140°C, the attenuation of the bandgap had more than 40% increase. The SEM images and optical UV–vis–NIR spectra confirmed the high quality of the VFS-CCs. Fourier transform infrared (FT–IR) spectra and thermo-gravimetric analysis (TGA) of the vinyl-functionalized silica spheres demonstrated that the optimal annealing temperature of the VFS-CCs was about 120°C, slightly lower than the oxidation temperature of the vinyl groups. This work provides a simple and controllable method for fabricating and optimizing the optical properties of the surface-modified colloidal crystals.
Journal
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- Journal of the Ceramic Society of Japan
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Journal of the Ceramic Society of Japan 118 (1382), 862-866, 2010
The Ceramic Society of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390282680262418816
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- NII Article ID
- 130000420704
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- NII Book ID
- AA12229489
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- ISSN
- 13486535
- 18820743
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- NDL BIB ID
- 10831895
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed