Highly Efficient, Deep-Blue Doped Organic Light-Emitting Devices


  • The authors acknowledge the financial support of a research grant from the MOE Program for Promoting Academic Excellence of Universities under grant No. 91-E-FA04-2-4-B and a JD research grant of Industry/Academia Cooperation Project provided by e-Ray Optoelectronics Technology Co., Ltd., who also provided many of the OLED materials used in this study.


original image

All the attributes necessary for good OLED performance (see Figure), namely, high electroluminescence efficiency (5.4 cd A–1), long operational lifetime (10 000 h at an initial luminance of 100 cd m–2), and deep-blue color (color saturation: (0.14, 0.13)) are demonstrated by an OLED incorporating a novel, composite hole-transport layer and an emitter based on a new mono(styryl)amine dopant in the stable, anthracene-based blue host material, 2-methyl-9,10-di(2-naphthyl)anthracene.