脫氧核醣核酸 (Deoxyribonucleic acid, DNA) 除了做為生物的遺傳物質，已在許多其他方面得到越來越多的關注。除了傳統上在基因工程方面的探討，尚有作為基本材料於奈米科技方面的研究。由於DNA具有諸多獨特物理及化學性質，作為高分子材料極有潛力應用於光電元件上。本論文即以DNA為原料，進行複合材料的合成，並將其運用於有機發光元件上。
本研究探討DNA與數種介面活性劑複合的材料製備過程，並進行光電特性的量測。從實驗結果發現，這些DNA複合材料的熱裂解溫度皆達200℃以上，光學穿透度在可見光與近紅外光的範圍可達96％，並且可藉由低成本的旋轉塗佈法於基板上形成均勻的光學薄膜。這些性質皆有利於此DNA複合材料於光電元件上的應用。
由於DNA材料的能階特性，本研究將其應用於有機發光元件的電子阻擋層。實驗的結果顯示，將DNA複合材料用於多層結構的設計上，可以使有機發光元件相較於沒有DNA複合材料，在1000 mA/cm2下增強52.47％的亮度。此研究同時對材料性質與元件結構進行最佳化，藉由調整DNA的分子量與多層結構各層的厚度，可進而提升元件的效能。

Deoxyribonucleic acid (DNA), as a genetic substance, has attracted much attention in genetic engineering and in nanotechnology. Due to several unique properties of DNA molecules, it also has high potential to be utilized in photonic devices. In this research, hybrid materials based on natural DNA extracted from Salmon sperm were exploited and were implemented in organic light-emitting devices.
In the first part of this research, the preparation procedures of DNA hybrid materials, where DNA forms complexes with several surfactants, were described and the optical and electrical properties were characterized. From the experimental results, it shows that DNA hybrid materials have a decomposition temperature above 200℃, high optical transmittance around 96％ in 400nm~1100nm. Meanwhile, thin films with good quality can be formed on substrates using spin-coating technique. These properties of DNA hybrid materials are advantageous for photonic devices and exhibit the potential for practical implementation.
In the second part of this research, DNA hybrid materials were explored in the implementation of organic light-emitting devices where the DNA hybrid material was incorporated as an interlayer for blocking electrons. The experimental results indicate that devices with DNA interlayer show enhanced performance with respect to its counterpart. By varying the material properties and multilayer structures, the device performance can be further optimized.

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