Patent ID: 8330350

Claim:
An organic electroluminescence device, comprising: a cathode; an anode; and a single-layered or multilayered organic thin-film layer provided between the cathode and the anode, wherein the organic thin-film layer comprises at least one emitting layer, and the at least one emitting layer comprises at least one phosphorescent material with a maximum wavelength of 570 to 720 nm and a host material represented by a Formula (1) as follows, Ra—Ar 1 —Ar 2 —Rb (1) wherein Ra is a substituted or non-substituted fluoranthene ring, Ar 1 is a substituted or non-substituted benzene ring, Ar 2 is a substituted or non-substituted naphthalene ring, and Rb represents a substituted or non-substituted phenanthrene ring, and substituents for Ra, Rb, Ar 1 and Ar 2 are not aryl groups.