ORGANIC ELECTROLUMINESCENT DEVICE AND MATERIAL FOR ORGANIC ELECTROLUMINESCENT DEVICE

摘要

An organic electroluminescence device includes: a cathode; an anode; and a single-layered or multilayered organic thin-film layer provided between the cathode and the anode. In the organic electroluminescence device, the organic thin-film layer includes an emitting layer, and the emitting layer contains: a phosphorescent material; and a host material represented by the following formula (1).
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒRa-Ar 1 -Ar 2 -Rb€ƒ€ƒ€ƒ€ƒ€ƒ(1)
In the formula, Ar 1 , Ar 2 , Ra and Rb each represent a substituted or unsubstituted benzene ring or a substituted or unsubstituted fused aromatic hydrocarbon group selected from a group consisting of a naphthalene ring, a chrysene ring, a fluoranthene ring, a triphenylene ring, a phenanthrene ring, a benzophenanthrene ring, a dibenzophenanthrene ring, a benzotriphenylene ring, a benzochrysene ring, a picene ring and a benzo[b]fluoranthene ring.