新穎透明電極在有機發光元件之應用

Applications of Novel Transparent Electrodes in Organic Light Emitting Diodes

胡乃文(Nai-Wen Hu)

指導教授 ： 吳忠幟

國立臺灣大學/電機資訊學院/電子工程學研究所/碩士(2017年)

https://doi.org/10.6342/NTU201701771

摘要

近年來，有機發光元件成為最具有潛力可作為未來顯示器及照明產品的元件，其研究發展備受矚目，而其中透明有機發光元件更具有其他優勢，可有更廣泛的應用。為了滿足高效率、長壽等元件特性，我們必須設法了解元件的光學特性，以達到最佳的外部出光效率，減少被侷限在元件內部的能量。
在本篇論文的第一部份，我們說明了光學模擬所應用的原理，並透過此光學模型來預測當透明電極替換成石墨烯後對有機發光二極體元件特性所造成的改變，並將之與常見的氧化銦錫透明導體做比較，研究出石墨烯基板可讓有機發光二極體出光效率更好的結構。
第二部份為探討如何透過改變元件結構，去調整穿透度頻譜的峰值位置，使元件在未點亮前，因不同結構呈現不同的顏色變化，使得透明有機發光元件更具有特色，也讓透明有機發光二極體有更多應用。

關鍵字

有機發光元件 ； 透明電極 ； 光學模擬 ； 石墨烯

並列摘要

Nowadays, organic light-emitting devices (OLEDs) have been demonstrated as an important display and lighting technology. Among various advantages, transparent OLEDs can further extend applications of OLEDs. Therefore, many researchers have been devoted to develop transparent OLEDs. In order to achieve high efficiency, long operating lifetime, one should also understand the optical characteristics in OLEDs in order to achieve the best external quantum efficiency (EQE) and to reduce the energy trapped in device.
In the first part of this thesis study, we conduct simulation studies on optical characteristics of OLED structures using graphene as the transparent electrodes. By comparing OLEDs using graphene and ITO, we suggest that graphene OLED structures could provide better optical out-coupling than ITO OLEDs.
In the second part of this thesis study, we studied the optical structure of transparent OLEDs that could shift the peak of transmittance spectra, resulting in OLEDs of different colors, which may find some interesting applications.

並列關鍵字

Organic light-emitting devices (OLEDs) ； transparent electrodes ； optical simulation ； graphene

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