The Study of White Organic Electroluminescent Devices

• Main Authors: Sen-Yu Yang, 楊森宇
• Other Authors: Nyen-Ts Chen
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/08931831309513321745

碩士 === 國立屏東科技大學 === 機械工程系所 === 98 === In consideration of fabrication and cost issue, Lately white organic light emitting Devices (WOLEDs) combined with Color Filter (CF) has become one of promising methods to produce full-color OLED displays. Rubrene is a yellow fluorescent dye. In our investigation, we would discuss obviously the emission behavior of organic electroluminescent devices by doping Rubrene into hole transport layer (HTL) and hole blocking layer (HBL), respectively. In the experiment, we first doped Rubrene into hole transport layer (NPB), and could obtain mixing-light effect by incomplete energy transfer. we obtain a optimum complementary white OLED as the doping degree of Rubrene is about 2.5 wt.%. The CIE coordinates located at (0.34, 0.35). A maximum luminance of 10725 cd/m2 (at 16 V) and a luminance efficiency of 5.31 cd/A (at 30 mA/cm2) were obtained in the device. After that, we doped Rubrene into hole-blocking layer (NPB), and obtain a optimum complementary white OLED as the doping degree of Rubrene is about 1.5 wt.%. The CIE coordinates located at (0.31, 0.32). A maximum luminance of 8960 cd/m2 (at 17 V) and a luminance efficiency of 4.77 cd/A (at 30 mA/cm2) were obtained in the device.