本論文將雙離子產生的界面偶極及金奈米粒子產生的表面電漿共振效應用於高分子發光二極體的電子注入層的探討，實驗結果發現可以成功的提升元件的效能。
第一部份使用3-磺丙基十八烷基二甲基銨(SB3-18)做為電子注入層，以G-PF為發光層，鋁當作陰極，發現因其可在發光層與陰極間產生界面偶極，使電子降低注入能障，來提升元件效能，進一步做濃度最適化實驗，可以使元件得到更好的效果，但是SB3-18在較高功函數的金屬像金銀當陰極提升效果有限，經由二維表面粗度儀量測及原子力顯微鏡量測，推測是因為其厚度較薄，造成高功函數的金屬容易破壞此電子注入層，使其效能提升有限。
第二部份是使用電子注入層的材料溴化四辛基銨(TOAB)，因其可當作界面活性劑，利用空間及靜電穩定金奈米粒子，聚乙烯砒咯烷酮(PVP)當保護劑，來合成金奈米粒子，並當作電子注入層，有良好穩定性。在PVP和TOAB濃度固定下，當加入金奈米粒子時，發現元件有較好的效能，藉由光激發螢光量測(PL)和紫外可見光譜(UV-vis)的量測，推測元件的效能提升，來自金奈米粒子的表面電漿共振。

In this work, we applied interfacial dipole and surface plasmon resonance produced by zwitterions and gold nanoparticle to enhance performance of polymer light- emitting diodes.
In first part, SB3-18 used as electron injection layer , G-PF as active layer, and Al as cathode.SB3-18 on G-PF can induce interfacial dipole ,heightening the vacuum level , decreasing electron injection barrier and enhancing performance of device. By selecting appropriate concentration can get much better devices. But we use SB3-18 as electron injection layer with high work function metal such as Au and Ag as cathodes do not get better performance because the thickness of SB3-18 is thin byα-step measurement
In the second part，TOAB used as surfactant and PVP as protection agent synthesizing gold nanoparticles and we use that as electron injection layer in polymer light-emitting diodes. Device performance enhanced when we add gold nanoparticles in electron injection layer with the same concentration of TOAB and PVP. Through ultraviolet–visible spectroscopy and photoluminescence measurement, we think device enhanced by surface plasmon resonance of gold nanoparticles.

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