Tuning Wall Thicknesses in Mesoporous Silica Films for Optimization of Optical Anti-Reflective Properties
| Autor: | Konstantin Konstantinov, Mikiya Matsuura, Amanullah Fatehmulla, Md. Shahriar A. Hossain, Hirofumi Tanabe, Yusuke Yamauchi, Yoshio Bando, W. A. Farooq, Nawfel Abdullah, Md. Tofazzal Islam, Kazuhiko Maekawa, Yusuf Valentino Kaneti |
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| Rok vydání: | 2018 |
| Předmět: |
Materials science
Biomedical Engineering Bioengineering 02 engineering and technology 010402 general chemistry 01 natural sciences Styrene law.invention chemistry.chemical_compound law Copolymer General Materials Science Calcination Composite material chemistry.chemical_classification Spin coating General Chemistry Polymer Mesoporous silica 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Tetraethyl orthosilicate chemistry 0210 nano-technology Mesoporous material |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 18:100-103 |
| ISSN: | 1533-4880 |
| DOI: | 10.1166/jnn.2018.14558 |
| Popis: | This work reports the fabrication of mesoporous silica films with controllable wall thicknesses by spin coating of precursor solutions consisting of polystyrene-block-polybutadiene-block-polystyrene based triblock copolymers (Hydrogenated methyl Styrene Ethylene Butadiene methyl Styrene, HmSEBmS) and tetraethyl orthosilicate (TEOS) followed by calcination in air at 600 °C, for optical anti-reflection films. By changing the relative weight of the triblock polymer to TEOS, the pore-to-pore distance in the mesoporous silica film can be controlled without significantly affecting the size of the mesopores, thus, enabling effective control of the refractive index and porosity of the films. In terms of optical properties, the transmittance of the fabricated mesoporous silica film is approximately 3.3% higher than that of the uncoated glass substrate in the wavelength range of 400 to 750 nm. |
| Databáze: | OpenAIRE |
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