| 摘要 |
Providing an organic EL element utilizing a novel dinaphthopyrene compound, having high color purity of green light, excellent light-emitting efficiency, light-emitting luminance. The organic EL element has, in between a positive electrode and a negative electrode, an organic thin-film layer including a light-emitting layer. The organic thin-film layer contains the dinaphthopyrene compound comprising a structure expressed by the following structural formula: <CHEM> where R<1> through R<18> may be the same or may be different, and represent hydrogen atoms or substituents. At least one of R<1> through R<18> preferably is selected from aryl groups, arylamino groups and diarylamino groups. The organic thin film layer having electron transporting layer or positive hole transporting layer containing dinaphthopyrene compound, light-emitting layer containing a host compound whose light absorption wavelength is at a short wavelength side of the dinaphthopyrene compound, and light-emitting wavelength in a vicinity of the light absorption wavelength of the dinaphthopyrene compound. |
