Undoped Blue Organic Light-Emitting Diodes Using 2-Diphenylaminofluoren-7-Ylstyryl Derivatives
作者:Heung Soo Jang、Ji Young Song、Kum Hee Lee、Dong Hwan Lim、Seok Jae Lee、Young Kwan Kim、Seung Soo Yoon
DOI:10.1166/jnn.2014.8311
日期:2014.8.1
Blue fluorescent materials based on diphenylaminofluorenylstyryl derivatives connected with the various end-capping aromatic groups were synthesized and characterized. An OLED, using (E)-9,9-diethyl-7-(4-(4-fluoronaphthalen-1-yl)styryl)-N,N-diphenyl-9 H-fluoren-2-amine(5) in emitting layer, was fabricated. This device showed the highly efficient blue emission with the maximum luminance of 5138 cd/m2, the luminous efficiency of 3.92 cd/A, the power efficiency of 3.17 lm/W, the external quantum efficiency of 2.90% at 20 mA/cm2 and CIE x, y coordinates of (0.14, 0.17).
合成并表征了基于二苯基氨基芴苯乙烯基衍生物的蓝色荧光材料,这些衍生物与不同的末端封端芳香基团相连。利用发射层中的(E)-9,9-二乙基-7-(4-(4-氟萘-1-基)苯乙烯基)-N,N-二苯基-9 H-芴-2-胺(5),制备了一种有机发光二极管。该器件显示出高效的蓝色发射,最大亮度为 5138 cd/m2,发光效率为 3.92 cd/A,功率效率为 3.17 lm/W,在 20 mA/cm2 和 CIE x、y 坐标为(0.14,0.17)时,外部量子效率为 2.90%。