Optical properties of organic-inorganic hybrid thin film prepared by polymerization
| Autor: | Yun-Chieh Yang, 楊雲玠 |
|---|---|
| Rok vydání: | 2007 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 95 The research is to prepare the nanoparticle solution and coat it on the building windows to absorb the selective frequency of varied lights (NIR) to decrease temperature of the building. High refractive index optical thin films were using coating solution prepared by polymerization of HEMA in TiO2 sol. On the other hands, low refractive index optical thin films were using coating solution prepared by polymerization of MMA in SiO2 sol. The multi-layer film was prepared by alternating spin-coating high and low refractive indices coating solution. When coating solution was prepared by polymerization of HEMA in TiO2 sol. which diameter was 2.69 nm and the volume percentage of TiO2 was 27, the refractive index was 1.75. On the other hands, when coating solution was prepared by polymerization of MMA in SiO2 sol which diameter was 14 nm and the volume percentage of SiO2 was 30, the refractive index was 1.44. The simulation showed that the transmittance of visible light was greater than 90% and that of near-infra-red light was lower than 30% when the 23 layers film by alternating this low and high refractive indices. The experiment result showed that the transmittance of visible light was greater than 90% and that of near-infra-red light was lower than 40% when the film with 23 layers by alternating spin-coating this low and high refractive indices coating solution. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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