Universal Display Corporation
ORGANIC ELECTROLUMINESCENT MATERIALS AND DEVICES

Abstract:

Disclosed is electron/exciton blocking material that is a compound of Formula I ##STR00001## or Formula II ##STR00002## that is useful in improving the EQE of OLEDs. Also disclosed are OLEDs incorporating the electron/exciton blocking materials in their electron/exciton blocking layers and display devices incorporating such OLEDs.