本論文將界面活性劑應用於高分子發光二極體的電子注入層，搭配高功函數金屬作為陰極，成功的降低電子注入能障提升元件效能。
第一部分使用溴化十六烷基三甲銨(HTrMAB)作為電子注入層，發光層為G-PF，其層狀結構沿著G-PF法線方向堆積、成長，引發界面偶極，使用高功函數金屬鋁、銀、金當作陰極，均能降低電子注入能障，提升元件效能，並選用適當的溶劑與濃度最適化，以得到效能更好的元件。
第二部分選用親水端具有不同官能基之小分子界面活性劑應用於電子注入層，具有C=O官能基之界面活性劑搭配鋁作為陰極可大幅提升元件效能，搭配銀、金作為陰極反而成為電子注入的阻礙，經由XPS分析，發現C=O官能基能與鋁原子反應產生carbide-like/Al錯合物，降低電子注入能障，提升元件效能，並且經過濃度最適化，以得到效能更好的元件。

In this work, we applied surfactants as electron injection layer on polymer light-emitting diode. Surfactants successfully decrease electron injection barrier and enhance device performance with high work function metal as cathodes.
In the first part, we will use HTrMAB as electron injection layer on G-PF. Its lamellar structure on G-PF can induce interfacial dipole which decrease electron injection barrier and enhance device performance with Al, Ag, Au as cathodes. Select appropriate solvent and concentration can get much better devices.
In the second part, we will use surfactants which have different functional groups at hydrophilic side as electron injection layer. Surfactants with C=O functional group can enhance device performance by using Al as cathode, but become resistance for injection of electron by using Ag, Au as cathode. From results of XPS, the performance of devices is improved by the formation of carbide-like/Al complex which react from C=0 functional group and Al, lowing electron injection barrier.

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