透明電極的品質將影響電致發光之發光效果，因此透明電極於電致發光元件中扮演非常重要的角色。目前大多以聚二氧乙基噻吩聚苯乙烯磺酸（PEDOT：PSS）和奈米銀線（AgNWs）當作透明電極材料塗布於電致發光基材上。然而，目前這些透明電極通常使用旋轉或刮刀塗布來製備。上述方法將導致粗糙表面和不均勻之厚度並且與基材間有較差之鍵結，因此透明電極容易從電致發光基材上剝離，使表面電阻上升。
為了解決上述問題，本實驗透過在電致發光基材表面接枝-NH3 +官能基，從而可以透過電泳沉積（Electrophoretic deposition, EPD）將PEDOT：PSS披覆於電致發光基材上。其擁有-NH3 +官能基基材表面因而可以與PEDOT：PSS中的-SO3-官能基產生離子吸引，改善這兩種材料間之界面，並使表面平坦化同時降低表面電阻，以使AgNWs更均勻且有效率再披覆其上以期進一步降低表面電阻；透過改變電泳時間和溶液濃度來控制沉積厚度，並進一步研究電泳參數對其電阻和透明度之關係。最後得到表面電阻261.2Ω/ sq，厚度為305nm的PEDOT：PSS-AgNWs複合透明電極，並成功的將此透明電極應用於電致發光元件中。

Transparent Conducting Electrodes(TCEs) play an important part in electroluminescence device, since the conductivity of the TCEs affect the luminous result. Poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and silver nanowires (AgNWs) are commonly coated on electroluminescent subtracts acting as the TCEs. However, most of these TCEs were generally fabricated by spray coating or rod coating nowadays. These methods lead to rough surfaces and uneven thickness, which not only cause the TCE to be easily peeled-off from the electroluminescent film through exterior forces but also increase the surface resistance.
To solve these problems, we demonstrate novel methods through grafting -NH3+ functional groups on to the surface of electroluminescent subtracts, so that PEDOT:PSS can be deposited onto electroluminescent subtracts by electrophoretic deposition (EPD). The surface with -NH3+ can attract the -SO3- functional groups in PEDOT:PSS, thus improving interface between these two materials, and making the surface conductive at the same time. This conductive substrate is suitable for depositing AgNWs by EPD. The thickness can be controlled by varying the electrophoresis time and solution concentration. Next, we research the effect of EPD parameters on its resistance and transparency. Finally, the PEDOT:PSS-AgNWs hybrid TCE exhibit resistance of 261.2Ω/ sq with 305nm thickness. Moreover, it applied to the electroluminescent element successfully.

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