本論文的目的為建立一種新式的太陽能分波系統，其概念為利用繞射光學元件(Diffractive Optical Elements, DOE)中的閃耀光柵元件(Blazed Grating)設計一個完整的分波系統，將太陽光分離成兩個波段:可見光波段(380-780nm)與紅外光波段(780-2520nm)。
本研究將製作一個7 units的太陽光分波系統，藉由設計閃耀光柵的表面結構使+1階與0階繞射光分別在可見光波段與紅外光波段有良好的繞射效率進行分波，並配合透鏡的聚光特性與波導的V溝結構使+1階與0階繞射光分別經由全內反射至波導兩側，用以達成分離可見光與紅外光的目標。分離出的可見光可應用在太陽能照明系統或矽太陽能電池，而分離出的紅外光則可應用在熱電裝置或鍺(Ge)太陽能電池，因此若能結合此分波系統與其他太陽能系統，便能形成混合式太陽能系統，使太陽光所有頻譜的能量都盡可能被利用和轉換，藉此提升太陽能的使用效率。

This paper aims to present a new type of solar splitting system. The concept is to design a complete splitting system to split solar spectrum into visible region (380-780nm) and infrared region (780-2520nm) by using the Blazed Grating which is a kind of Diffractive Optical Elements (DOE).
We will manufacture a 7 units solar splitting system in this research. By designing the surface structure of blazed grating, the +1 order and 0 order diffracted light will have high diffraction efficiency in the visible and infrared region, respectively. After combining the concentrate characteristic of lens and the v-groove structure of light-guide, the +1 order and 0 order diffracted light will be totally reflected to the sides of the light-guide, respectively and achieves the purpose of splitting. The visible light can be utilized in solar lighting system or silicon solar cells and infrared light can be utilized in thermo-electric devices or Ge (germanium) solar cells, which makes the solar energy be utilized and converted as much as possible for improving the utilization efficiency of solar energy.

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