膠體晶體與反蛋白石結構之製作及工程應用

Abstract

本論文研究是以電泳自組裝法(Electrophoresis Self-Assembly)製作膠體晶體(Colloidal Crystals)於平面的電極板上。進一步的，透過工作電極與相對電極的設計，可製作出管狀結構之膠體晶體(Cylindrical Colloidal Crystals)。接著將上述以電泳自組裝所獲得的膠體晶體為模板，探討利用電鍍方式製作可控制層數之金屬鎳(Ni)與氧化鋅(ZnO)的反蛋白石結構(Inverse Opals)。將獲得的金屬鎳之反蛋白石結構衍生於電解水(Water Electrolysis)上的應用；氧化鋅反蛋白石結構則是研究伴隨熱處理時間的改變，對於氧化鋅反蛋白石結構之材料內部氧逸散與否以及UV放射位移現象進行探討。最後則結合電泳與電鍍技術製作最密堆積排列的複合奈米透鏡結構(Composite Nano-Lens Structure)，並將此結構應用於LED元件上，進而研究光萃取效率(Extraction Efficiency)的改變；並且探討電泳與電鍍兩種濕式製程，應用於LED元件上對電性的影響。

An electrophoretic self-assembly method was employed to fabricate colloidal crystals on flat electrodes. In addition, cylindrical colloidal crystals were obtained via an unique cylindrical cell design. The colloidal crystals were plated with nickel and zinc oxide to produce interstitial voids among the inverse opal structures, whose layers could be accurately controlled with adjustments in relevant processing parameters. The metallic nickel inverse opals were explored as the electrode material for water electrolysis and studied for photonic band gap. For the ZnO inverse opals, we developed a facile process to prepare structures with reduced defects. Lastly, a close-packed composite nano-lens structure constructed by electrophoretic deposition and electroplating was applied atop of a LED device. The effect of composite nano-lens structure for the light extraction efficiency was evaluated. The correlation between the LED’s i-V curve and the nano-lens structure was studied.