Patent ID: 8592052

Claim:
An organic electroluminescence device comprising, between a pair of electrodes composed of a cathode and an anode, a light emitting layer, a hole transport layer provided on the anode side of the light emitting layer, and an electron transport layer provided on the cathode side of the light emitting layer, wherein at least one layer of layers constituting the electron transport layer includes an electron movement suppressing material which suppresses the movement of electrons, in an amount of 0.05% by weight or more, and of less than 100% by weight, wherein a layer which includes the electron movement suppressing material is sandwiched between a first electron transport layer and a second electron transport layer which do not include the electron movement suppressing material, and wherein the light emitting layer includes a luminescent dye and a host material, and the host material is selected from one from the group consisting of the following formulas 14, 15, 17, and 18: