Universal Display Corporation
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

Abstract:

Provided are high triplet host compounds based on a multiphenylene macrocycle which comprises at least one group L.sup.1 selected from the group consisting of O, S, Se, BR, BRR', CRR', SiRR', and GeRR' which links two phenylene groups. Also provided are formulations comprising these compounds. Further provided are OLEDs and related consumer products that utilize these compounds.