| abstract |
Provided is an organic EL element having a low driving voltage, a high luminous efficiency, and a long lifetime. At least an anode, a light-emitting layer, an electron transport layer, and a cathode are provided in this order, and the light-emitting layer includes a host and a dopant that emits fluorescence having a main peak wavelength of 550 nm or less, and the dopant The organic electroluminescence device is composed of a nitrogen-containing heterocyclic derivative represented by the formula (1), wherein the affinity Ad of the compound is equal to or greater than the affinity Ah of the host. [Selection figure] None |