The Effects of Two Spacers on White Organic Light-Emitting Diodes

The authors have demonstrated highly efficient white organic light-emitting diodes (WOLEDs) by using two emissive materials as a dopant, 1,4-Bis[2-(4'-diphenylaminobiphenyl-4-yl)vinyl]benzene (DABPV-ph) and iridium(III) bis(5-acetyl-2-phenylpyridinato-N,C2') acetylacetonate ((acppy)2Ir (acac)). In these WOLEDs, 2-methyl-9,10-di(2-naphthyl)anthracene (MADN), and 4,4'-N,N'-dicarbazole-biphenyl (CBP) were used as a spacer among the three emissive …