Organic electroluminescence element

摘要

An organic electroluminescence element comprising: an anode; a first emitting layer comprising at least a first host material and a first dopant; a second emitting layer comprising at least a second host material and a second dopant; and a cathode in the order mentioned: wherein the energy gap E_gh 1 of the first host material, the energy gap E_gd 1 of the first dopant, the energy gap E_gh 2 of the second host material, and the energy gap E_gd 2 of the second dopant satisfy the following formulas; and the luminescent intensity I 1 at the maximum luminescent wavelength of an emission spectrum derived from the first emitting layer, and the luminescent intensity I 2 at the maximum luminescent wavelength of an emission spectrum derived from the second emitting layer satisfy the following formula: E_gh 1> E_gd 1 E_gh 2> E_gd 2 E_gd 1> E_gd 2 I 1> 3.5xI 2.