ELECTROLUMINESCENT DEVICE CONTAINING A PHENANTHROLINE DERIVATIVE

摘要

An OLED device comprises a cathode, an anode, and a light-emitting layer therebetween, and additionally comprises a layer between the cathode and the light-emitting layer including a phenanthroline compound comprising no more than two optionally substituted phenanthroline moieties wherein one and only one group substituted on a phenanthroline nucleus includes an aromatic system comprising four or more fused aromatic rings. Such a device provides desirable electroluminescent properties, such as increased luminance and reduced drive voltage, as well as good device stability.