| abstract |
Provided is an organic electroluminescence device having high luminous efficiency (for example, external quantum efficiency), high durability, and little chromaticity shift after device degradation. An organic electroluminescent element having a pair of electrodes and at least one organic layer including a light emitting layer between the electrodes on a substrate, An organic electroluminescent element comprising a metal complex having a branched alkyl group in any one of the organic layers as described below, for example. [Selection] Figure 1 |