The present invention provides a light-emitting element sandwiching a
composite layer in which an organic compound and an inorganic compound
are mixed between a first electrode and a second electrode, where the
composite layer includes a first layer including a first organic compound
and a first inorganic compound that exhibits an electron accepting
property to the first organic compound (serves as an electron acceptor),
a second layer including a second organic compound and a second inorganic
compound, and a third layer including a third organic compound and a
third inorganic compound that exhibits an electron donating property to
the third organic compound (serves as an electron acceptor).