Efficient delayed fluorescence via triplet-triplet annihilation for deep-blue electroluminescence

Chem Commun (Camb). 2014 Jul 4;50(52):6869-71. doi: 10.1039/c4cc01851f.

Abstract

Four 2-(styryl)triphenylene derivatives (TSs) were synthesized for deep-blue dopant materials. By using a pyrene-containing compound, DMPPP, as the host, the TS-doped devices exhibited significant delayed fluorescence via triplet-triplet annihilation, providing the highest quantum efficiency of 10.2% and a current efficiency of 12.3 cd A(-1).