高分子電激發光二極體元件特性之研究

The study of properties of polymer light emitting devices

蔡峻偉(Chun-Wei Tsai)

指導教授 ： 張淑美

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00208

摘要

藉由了解一些特性能使得快速改善效率，這表示LEPs將很快成為許多顯示器應用的材料。在這篇研究裡，為了最佳化元件效率和品質，我們將詳細討論主要的參數。為了完全的利用電激發光高分子的特性，建立有效率的通電接觸是很重要的。一個理想的電極有高傳導性、穩定、能提供一個低阻礙的載子注入而且在LEP上時不會劣解LEP。很難找到一個單一種材料可以滿足所有的條件。因此接觸的最佳化通常需要建立多層結構。在ITO上覆蓋一層PEDOT:PSS就能成為透明陽極的最好結合體，而Al和Ca已經被證明是有效率的電子注入材料。在這系列的PLEDs研究中使用green polyfuorene polymer和 Ca/Al/Ca/Al電極結構進行在高溫熱儲存下最好的改善。

關鍵字

電激發光二極體 ； 電極結構 ； 高溫熱儲存

並列摘要

Progress in understanding the some characteristics have led to rapid improvements in efficiency that have meant that light-emitting polymers (LEPs) will soon be the material of choice for many display applications. In this study, in order to optimise the device performance and quality, we will discuss in details the main factors. To fully exploit the LEPs in electroluminescent applications, it is of paramount importance to develop efficient electrical contacts. An ideal electrode is highly conductive, stable, provides a low barrier to carrier injection, and does not degrade the LEP upon contact. It is difficult to find a single homogeneous material that satisfies all of these requirements. Hence, contact optimization has often required the development of multilayer structures. In particular, indium tin oxide covered by a film of poly(ethylene-dioxythiophene):poly(styrene sulfonic acid) {ITO/PEDOT:PSS} has become a favorite combination for the transparent anode, and metals (Al and Ca) have proven to be efficient electron-injecting contacts. Among the series of (polymer light emitting devices (PLEDs) investigated, using a green polyfuorene polymer, Ca/Al/Ca/Al electrodes lead to the best improvements in high temperature storage.

並列關鍵字

PLEDs ； electrodes ； high temperature storage

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