A technique is provided that improves the efficiency of electron and hole injection in a light-emitting element containing quantum dots in a light-emitting layer thereof and hence improves the luminous efficiency thereof The light-emitting element includes on a substrate: a positive electrode; a negative electrode; a quantum-dot layer between the positive electrode and the negative electrode, the quantum-dot layer including a stack of a plurality of luminous, first quantum dots and a plurality of non-luminous, second quantum dots; a hole transport layer between the positive electrode and the quantum-dot layer; and an electron transport layer between the negative electrode and the quantum-dot layer, the plurality of second quantum dots being more numerous in an electron transport layer side than in a hole transport layer side.