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標題: 利用次波長結構光碟片之螢光太陽能聚合器
Luminescent Solar Concentrators Using Subwavelength-Structured Optical Discs
作者: 吳俊灝
Wu, Jyun-Hao
關鍵字: luminescent solar concentrator;太陽能螢光聚合器;subwavelength;optical disc;次波長結構;光碟片
出版社: 機械工程學系所
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本論文目的在於利用光碟片的次波長結構以及搭配抗反射膜以提升太陽能螢光聚光器(luminescent solar concentrator , LSC)的光波導效應。而太陽能螢光聚合器主要能廣泛應用於透明材質、如應用於與建築結合的太陽光電(building-integrated photovoltaic, BIPV)。

The purpose of this study is to use the subwavelength structure of optical discs and anti-reflection coating to improve the optical waveguide effect of the luminescent solar concentrator (LSC). It can be widely applied to transparent materials, such as the building-integrated photovoltaic (BIPV).
Through the vector diffraction theory and simulation by the grating software, we analyzed the influence of the period and depth of the subwavelength-structured surface on the optical waveguide effect, for achieving more efficient use of incident light. The subwavelength-structured surface allows the incident light to be diffracted into high order diffraction beams. It will give rise to an increase of the optical waveguide effect of the whole system if the diffraction angle is greater than the critical angle of total internal reflection. However, different wavelengths of incident light will cause different diffraction angles. In considering the absorption and emission spectrum of luminescent material, we selected the appropriate period and depth of the structure that will increase the internal optical waveguide effect of the whole system. According to the experimental results, we have found that the LSC with the structured surface can increase the optical waveguide effect of the substrate edge within 1~5% corresponding to different wavelengths.
In the end of the study, the surface of the LSC was coated with the anti-reflection film, which is suitable in the range of absorption spectrum of the luminescent layer. The reflectivity of the substrate surface presents a reduction of 4~5%, that enhances the efficiency of the luminescent emission and increases the optical waveguide effect of the substrate edge. The experimental result shows that antireflection coating on the surface of an optical substrate can further enhance the optical waveguide effect by 0.5%.
其他識別: U0005-2308201017202000
Appears in Collections:機械工程學系所

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