| abstract |
An organic electroluminescent device comprising an anode, a cathode, and an organic layer disposed between the anode and the cathode and including a light emitting layer including a hole injecting layer, a hole transporting layer and a host material, wherein each of the hole injecting layer, the hole transporting layer, Wherein the hole injection layer contains the phosphorescent material in an amount of 10 mass% or more and less than 50 mass%, and the concentration of the phosphorescent material contained in the hole transport layer is lower than that in the hole injection layer, The concentration of the phosphorescent material is lower than in the hole injection layer and higher than in the hole transport layer. |