Organic EL element
An organic EL element includes an anode and a cathode, and an organic compound layer between the anode and the cathode, the organic compound layer including a light-emitting sublayer, wherein the light-emitting sublayer contains a host, a metal complex acting as a first dopant, and a metal complex acting as a second dopant, the metal complex acting as the first dopant includes an unconjugated ligand and a conjugated ligand, and the first dopant has the lowest excited triplet level originating from the lowest excited triplet level of a unconjugated ligand.
1. An organic EL element comprising:
an anode and a cathode; and
an organic compound layer between the anode and the cathode, the organic compound layer including a light-emitting sublayer,
wherein the light-emitting sublayer contains a host, a metal complex acting as a first dopant, and a metal complex acting as a second dopant,
the metal complex acting as the first dopant includes an unconjugated ligand and a conjugated ligand, and
the first dopant has the lowest excited triplet level originating from the lowest excited triplet level of an unconjugated ligand.
2. An organic EL element comprising:
an anode and a cathode; and
an organic compound layer between the anode and the cathode, the organic compound layer including a light-emitting sublayer,
wherein the light-emitting sublayer contains a host, a metal complex acting as a first dopant, and a metal complex acting as a second dopant, and
the first dopant has a relative emission intensity of 0.14 or less at room temperature with the emission intensity of Ir(ppy) 3 at room temperature being taken as 1.
3. The organic EL element according to claim 2 , wherein the second dopant comprises a phosphorescent material.
4. The organic EL element according to claim 3 , wherein the first dopant and the second dopant comprise Ir or Pt as a central metal.