Patent ID: 8202630

Claim:
A light emitting element comprising: a first layer; a second layer; and a third layer, wherein the first, second and third layers are interposed between mutually-facing first and second electrodes, wherein the first layer contains a first substance expressed by either a general formula 1 or a general formula 2, and a second substance exhibiting an electron accepting ability with respect to the first substance, wherein the second layer contains a third substance expressed by either the general formula 1 or the general formula 2, and a fourth substance exhibiting an electron donating ability with respect to the third substance, wherein the third layer contains a light emitting substance, wherein the first, second and third layers are sequentially laminated, wherein the first layer is in contact with the first electrode, wherein the third layer is in contact with the second electrode, wherein when a voltage is applied to the light emitting element such that a potential of the second electrode is higher than that of the first electrode, the light emitting element emits light, wherein, in the general formula 1, R 1 to R 4 each independently represents either hydrogen or an alkyl group, and Ar 1 to Ar 4 each independently represents an aryl group having 6 to 14 carbon atoms, and wherein, in the general formula 2, Ar 11 to Ar 18 each independently represents an aryl group having 6 to 14 carbon atoms.