Molecular Engineering of Blue Organic Light Emitting Materials Based on Diarylamino-fluorene

摘要

We demonstrated the efficient blue organic light-emitting diodes (OLEDs) by employing diarylamino-fluorene derived blue fluorescent molecules as dopants. Among those, a device exhibited blue emission with the luminous efficiency of 11.2 cd/A at 20 mA/cm~2, the external quantum efficiency of 9.7% at 20 mA/cm~2, and the CIE_(x,y) coordinates of(x=0.163, y=0.259) at 8V.