| Summary: | 碩士 === 逢甲大學 === 材料科學所 === 94 === Nowadays the glass windows, which have been developed beyond the situation of a sole use of flat panel glasses, are inclined to be steered into multi-functional products such as low radiation window glasses and smart window glasses by various novel technological applications.
The theme of this study is focused with the subjects to explore the sputtering and sol-gel thin film deposition process to enhance the
anti-reflective and anti-static properties of the suspended particle device(SPD) type of smart windows. Moreover, the optical and electrical
properties of anti-reflective and anti-static coatings as well as their microstructures have been investigated. First of all, the lab work of this study was to explore the influence of heat treatment on the optical properties of conventional floating panel glasses, which are used as substrate of smart windows.Subsequently, sol-gel process was employed to deposit silicon oxide (SiO2) films of low refractive index (RI) to match up the indium tin oxide (ITO) film of high RI in order to produce better anti-reflective coatings on SPD smart windows. The processing parameters including rapid thermal annealing temperatures, the number of thin layer
coatings, were considered in terms of the effects of microstructural changes, crystallization, transmittance and reflectance, and sheet resistance of sol-gel derived films.
The results showed that the tin side of floating glasses through a heat treatment under temperature above 600oC and oxygen atmosphere came up with the so-called bloom phenomenon, where the surface of tin side of floating glass accompanied with fine wrinkling. This would in turn slightly increase the reflectivity for such glass substrates of smart windows. Two layers of sol-gel deposited silica film on ITO film sputtering-deposited on the glass substrate have demonstrated an improved anti-reflective coating
for the smart window application by decreasing its reflectivity of nearly 4% and increasing its transmittance of 2.5%. The glass substrates of smart window coated with transparent conductive oxide (ITO) thin film via sputtering process has the sheet resistance of 92.9 Ω/□ to meet the
anti-static requirement for the smart window applications. The combined use of anti-static films, anti-reflective films, and SPD films to produce the modern windows of controlled light transmission and illumination level capabilities have practically offered better performance of energy-savingefficiency, safety, and environmental comfortableness for viewing
windows used in the offices, buildings and vehicles.
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