紅色主客體有機材料摻雜比例對於白光有機發光二極體電激發光性質之影響

The Effect of The Ratio of The Red Dopant Material in Host-Dopant System of White OLED on Electroluminescence Properties

連培勛(Pei-Syun Lian)

指導教授 ： 許佳振

國立中正大學/理學院/物理學系/碩士(2015年)

摘要

本論文主要在於控制紅色客體有機材料在主客體系統中的比例，探討白光OLED元件之電激發光特性的研究，其元件結構為:ITO/NPNPB(75nm)/WRD-9501:NPB(x%)(30nm)/WBD-7105:WBH-3101(2%)(30nm)/Alq3(15nm)/LiF(1nm)/Al(100nm)，藉由調配紅光的摻雜比例，可以得到一系列不同色溫、色座標、演色性指數的白光OLED元件，實驗中我們也探討不同清洗和蝕刻ITO基板對於綠光元件的性質影響，透過良好的清洗和蝕刻製程，能夠穩定ITO基板所製作出的OLED元件特性，封裝的部分也經過多次的測試，在封裝前後其OLED元件特性和發光顏色並不會被破壞，最後我們討論一系列的白光OLED元件特性，在電流4mA的操作下，紅色客體材料摻雜比例0.5%時有最高演色性指數66，而在電流效率的部分，紅色客體材料摻雜比例1%時達到15cd/A、演色性指數為60.1。

關鍵字

白光有機發光二極體 ； 摻雜 ； 主客體 ； 電激發光

並列摘要

In this study, we demonstrate the electroluminescence properties by controlling the ratio of the red dopant organic material in host-dopant system .The device of the OLED structure is ITO/NPNPB(75nm)/WRD-9501:NPB(x%)(30nm)/WBD-7105:WBH-3101(2%)(30nm)/Alq3(15nm)/LiF(1nm)/Al(100nm).Due to the difference from the red dopant ratio ,we can derive a series of the color temperature,CIE1931 coordinate and color rendering index for the white OLED. In the experiment, we discuss the methods to clean and etch the ITO substrate for stabilizing the properties of the OLED device. And we find the best encapsulation method to protect the active area of OLED device be broken after exposure UV source in the encapsulation process. At the final part, we fix the current at 4mA and the best result of the color rendering index is 66 for the 0.5% red dopant device and the current efficiency is 15cd/A for 1% red dopant device.

並列關鍵字

Electroluminescence ； White OLED ； Host-Dopant System

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