Light-emitting element comprising stacked light-emitting layers, light-emitting device, electronic device, and lighting device

A light-emitting element comprising:

• a first EL layer between an anode and a cathode;
• and
• a light-emitting layer between the anode and the cathode,
• wherein the first EL layer includes a first light-emitting layer and a second light-emitting layer,
• wherein the first light-emitting layer is located between the cathode and the second light-emitting layer,
• wherein the first light-emitting layer is in contact with the second light-emitting layer,
• wherein the first light-emitting layer includes an electron-transport material, and a hole-transport material, and a first guest material,
• wherein the second light-emitting layer includes a host material and a second guest material,
• wherein an emission peak of the second guest material is shorter than an emission peak of the first guest material,
• wherein a lowest unoccupied molecular orbital level of the first guest material is in a range of higher than 0 eV and lower than 0.1 eV of a lowest unoccupied molecular orbital level of one of the electron-transport material and the hole-transport material,
• wherein each of the first guest material and the second guest material is a phosphorescent organometallic iridium complex, and
• wherein the first guest material is different from the second guest material.