本篇論文構想是設計出有機發光二極體元件之複合式結構電極，並以能夠取代傳統ITO為目標；元件可採取下發光或是全穿透的形式，希望能夠從實驗研究中改善電性，穿透率以及效率。有機發光二極體元件其中一項特色為元件能夠穿透，而穿透式的元件則需要特殊的透明電極才能夠達成，因此本論文將探討近年來較多被採用的複合式結構，此種結構以兩層介電材料，包住中間層金屬材料，進而產生微共振腔的效應，再微調共振腔的腔體長度以及金屬厚度，可以使其達到最高穿透並維持高效率以及電性。
由於本實驗結構在OLED陽極的應用上的文獻並不多，也是本驗室第一次開發的複合式陽極結構，因此本文主要針對最佳化電極的電性注入、效率以及穿透率這三大重點做研究探討。
實驗以三氧化鎢(WO3)、二氧化鉬(MoO2)以及三氧化鉬(MoO3)作為介電材料的選擇，搭配高導電性、高穿透的銀做為陽極中間層；有機傳輸/注入層使用NPB此種有機材料，螢光材料Alq3做為主體綠光的發光層，並參雜C545T作為客體發光材料，以提高效率與電性，並最佳化元件結構為: Glass substrate/ WO3(25 nm)/ Ag(14 nm)/ MoO2(5 nm)/ NPB(60 nm)/ Alq3:C545T[1%](22.5 nm)/ Alq3(22.5 nm)/ LiF(0.8 nm)/ Al(120 nm). 並且最佳化電極，使穿透度可以達到84%(max)。

The main concept of this thesis is to design and study an ITO free organic light emitting diode with composite structure electrode. The unit can be both bottom emitted type or fully transparent OLED. One of the main traits of an OLED is that it can be transparent. In order to achieve high transparency electrode for OLEDs, it’s necessary to develop a transparent electrode. Base on the studies for composite metal-oxide material electrode, adopted by many research facilities in recent years, the anode structure which made by one thin metal layer sandwiched between two metal-oxide (dielectric) layers is greatly improved. In addition to the micro-cavity effect and SPR (Surface plasmon Resonance), the electro can achieve high transparency, efficiency and electro property.
Since there is no established study on the composite anode, this structure is unprecedentedly constructed in the institute of NTUST. The importance of the unit optimization procedure is proved to be conspicuous. Therefore, in this thesis we focus on three main characteristics: charge injection of the anode, efficiency and transparency of the electrode.
The materials for the metal-oxide electrode were tungsten trioxide, molybdenum dioxide and molybdenum trioxide. And the thin metal in the middle was silver (Ag). NPB layer was for the charge transportation/injection. And the fluorescence material for host emissive layer was Alq3, doped with the guest emissive layer C545T to achieve high electric property and high efficiency. The final optimized OLED unit with composite electrode was: Glass substrate/ WO3(25 nm)/ Ag(14 nm)/ MoO2(5 nm)/ NPB(60 nm)/ Alq3:C545T[1%](22.5 nm)/ Alq3(22.5 nm)/ LiF(0.8 nm)/ Al(120 nm). And the maximum transparency could come up to 84%.

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