Light-Emitting Element, Display Device, Electronic Device, and Lighting Device

A light-emitting element comprising a light-emitting layer between a pair of electrodes,

• wherein the light-emitting layer comprises a first organic compound, a second organic compound, and a guest material,
• wherein a HOMO level of the first organic compound is lower than a HOMO level of the second organic compound,
• wherein a difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is larger than 0 eV and smaller than or equal to 0.5 eV,
• wherein a LUMO level of the first organic compound is lower than a LUMO level of the second organic compound,
• wherein the guest material is capable of converting triplet excitation energy into light emission,
• wherein the first organic compound and the second organic compound form an exciplex,
• wherein the first organic compound comprises a first electron-transport skeleton and a first hole-transport skeleton, and
• wherein the second organic compound comprises a second electron-transport skeleton and a second hole-transport skeleton.