Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1441780 | Synthetic Metals | 2011 | 5 Pages |
Phenyl or naphthyl substituted 9-(2,2-diphenylvinyl)carbazoles were synthesized by the multi-step synthetic route. The materials were examined by various techniques including thermogravimetry, differential scanning calorimetry, and electron photoemission technique. These derivatives were also tested as hole-transporting materials in bilayer OLEDs with Alq3 as the emitter. The devices exhibited promising overall performance with a turn-on voltage of 3.2 V, a maximal photometric efficiency of about 4.8 cd/A and maximum brightness of 12,400–13,100 cd/m2.
► Aryl substituted 9-(2,2-diphenylvinyl)carbazoles were synthesized. ► These derivatives used as hole transporting materials in OLEDs. ► Efficiency of 4.8 cd/A and brightness exceeding 13,000 cd/m2 were obtained.