ORGANIC ELECTROLUMINESCENT ELEMENT, LIGHTING DEVICE, DISPLAY DEVICE AND FLUORESCENT COMPOUND

摘要

An objective of the present invention is to provide an organic electroluminescent element which has improved luminous efficiency, and which is suppressed in changes in the emission characteristics over time, thereby achieving excellent stability. Another objective of the present invention is to provide a lighting device and a display device, each of which is provided with the organic electroluminescent element, and a fluorescent compound. An organic electroluminescent element according to the present invention contains a fluorescent compound which has, as an electron-withdrawing group, a five- or six-membered aromatic heterocyclic ring containing one or two nitrogen atoms or a fused aromatic heterocyclic ring that contains the five- or six-membered aromatic heterocyclic ring in the skeleton, and which has, as an electron-donating group, a monocyclic or fused ring group. This organic electroluminescent element is characterized in that the electron density distribution of the HOMO and the electron density distribution of the LUMO of the fluorescent compound as determined by molecular orbital calculation are substantially separated from each other.