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

• Main Authors: Lian, Pei-Syun, 連培勛
• Other Authors: Hsu, Chia-Chen
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/71679175080773459091

碩士 === 國立中正大學 === 物理學系暨研究所 === 103 === 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.