Stable styrylamine-doped blue organic electroluminescent device based on 2-methyl-9,10-di(2-naphthyl)anthracene

We have developed a highly efficient and stable blue organic electroluminescent (EL) device based on. a blue fluorescent styrylamine dopant, p-bis(p-N,N-diphenyl-aminostyryl)benzene, in a morphologically stable high band-gap host material, 2-methyl-9, 10-di(2-naphthyl)anthracene, which achieved an EL efficiency of 9.7 cd/A and 5.5 lm/W at 20 mA/cm(2) and 5.7 V,with Commission Internationale d'Eclairage coordinates of (x=0.16, y=0.32). The blue-doped device achieved a half-decay lifetime (t(1/2)) of 46000 h at an initial brightness of 100 cd/m(2). (C) 2004 American Institute of Physics.