The present invention provides a light-emitting element including an
electron-transporting layer and a hole-transporting layer between a first
electrode and a second electrode; and a first layer and a second layer
between the electron-transporting layer and the hole-transporting layer,
wherein the first layer includes a first organic compound and an organic
compound having a hole-transporting property, the second layer includes a
second organic compound and an organic compound having an
electron-transporting property, the first layer is formed in contact with
the first electrode side of the second layer, the first organic compound
and the second organic compound are the same compound, and a voltage is
applied to the first electrode and the second electrode, so that both of
the first organic compound and the second organic compound emit light.