從前人的文獻中了解到金屬反射鏡與氧化鋅奈米柱陣列皆為一有效改善發光二極體之光輸出功率的方法。此研究提出之漫射型奈米柱反射鏡並應用於傳統覆晶型發光二極體元件上改善光萃取效率，而漫射型奈米柱反射鏡是將高反射率的鋁金屬沉積在氧化鋅奈米柱陣列之上所形成。由於此漫射型奈米柱反射鏡的粗糙化金屬表面與低折射係數的氧化鋅奈米柱陣列使得此新結構應用於覆晶型發光二極體的光輸出功率與光強度分佈的元件特性獲得改善。相較於傳統覆晶型發光二極體，本研究提出之奈米柱長度為500奈米之漫射型奈米柱反射鏡應用於覆晶型發光二極體在光輸出功率上有56.6%的提升。

From previous references, the metal reflector and the ZnO nanorod array were useful method to enhance light output power of light-emitting-diodes (LEDs). In this work, the diffused ZnO nanorod reflectors were designed to improve the light extraction of conventional flip-chip light-emitting-diodes (FCLEDs). By depositing the high reflective Al metal on the ZnO nanorod arrays, the diffused ZnO nanorod reflectors were fabricated. As the result of the roughened high reflective Al metal and the light scattering in the low refractive ZnO nanorod array, the light output power and the light distribution of the conventional FCLEDs were improved by using the diffused ZnO nanorod reflectors. Compared with the conventional FCLEDs, the increase percentage of 56.6% of the light output power was enhanced for the FCLEDs with diffused 500-nm-long ZnO nanorod reflector.

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