Organic alternating current electroluminescence device based on 4,4′-bis(N-phenyl-1-naphthylamino) biphenyl/1,4,5,8,9,11-hexaazatriphenylene charge generation unit

A organic alternating current electroluminescence (OACEL) device based on 4,4′-bis(N-phenyl-1-naphthylamino) biphenyl(NPB)/1,4,5,8,9,11-hexaazatriphenylene (HAT-CN)/tris(8-hydroxy-quin-olinato) aluminum (Alq3) doped with cesium carbonate (Cs2CO3) internal charge generation unit is demonstrated. Based on Alq3 doped with 10-(2-Benzothiazolyl)-2,3,6,7-tetrahydro-1,1,7,7-tetramethyl-1H,5H,11H-(1) benzopyropyrano (6,7-8-I,j)quinolizin-11-one (C545T) fluorescent emission layer, maximum luminance of 299 cd/m2 is observed when driven with a peak-peak voltage of 80 V at 120 kHz.