Effects of anthracene doping on electrical and light-emitting behavior of 8-hydroxyquinoline-aluminum-based electroluminescent devices

Organic electroluminescent (EL) cells consisting of an anthracene-doped 8-hydroxyquinoline aluminum light-emitting layer and a hole transport layer were prepared by co-evaporation, and their electrical and light-emitting behavior was examined. It was confirmed that anthracene doping increased the available current density of the EL cells and EL efficiency, which caused an increase in EL brightness. However, the EL spectrum was only slightly affected by the anthracene doping.