| 主权项 |
1. An organic electroluminescent element having an anode, a cathode, and one or more organic layers between the anode and the cathode provided on a substrate, wherein the one or more organic layers contain a light emission layer, and the density of the light emission layer is from 1.10 to 1.25 g/cm3; and the light emission layer contains a dopant and a host compound having a band gap of from 2.5 to 3.8 eV, the host compound being represented by one selected from the group consisting of Formulas (1), (4) and (5): wherein R1 to R4 are each a substituent; n1 and n2 are each an integer of from 0 to 3; Al and A2 each are a group represented by Formula (2). wherein Z1and Z2 each form an aromatic heterocyclic ring or an aromatic hydrocarbon ring each of which may have a substituent; and Z3 is a di-valent linking group or a single bond; and L1 is a di-valent linking or a single bond, wherein R21 and R22 are each a substituent; n21 and n22 are each an integer of 0 to 3; A21 and A22 each are a group represented by Formula (2); and L is a di-valent linking group, wherein A31 and A32 each are a substituent; n31 and n 32 each are an integer of 0 to 3; Y is an oxygen atom, a sulfur atom, an imino group, a sulfoxide group or a sulfonyl group; and R31 and R32 each are a group represented by Formula (2). |
