Enhanced hole injection in organic light-emitting diodes utilizing a copper iodide-doped hole injection layer

Abstract

We have demonstrated organic light-emitting diodes (OLEDs) by incorporating copper iodide (CuI) in 4,4′,4′′-tris(<italic>N</italic>-3-methylphenyl-<italic>N</italic>-phenyl-amino)triphenylamine (<italic>m</italic>-MTDATA) as a hole injection layer (HIL) based on the emitting system of C545T–Alq₃.