Light-emitting element, light-emitting device, and electronic device

摘要

A light-emitting element is provided, including a first electrode (302) and a second electrode (304), a first layer (321) including first and second organic compounds, the first layer being formed between the first electrode (302) and the second electrode (304) wherein the first organic compound is capable of emitting a first light and the second organic compound has an electron transporting property, and a second layer (322) including third and fourth organic compounds, the second layer (322) being formed between the first layer (321) and the second electrode (304) wherein the third organic compound is capable of emitting a second light and has an electron trap property and the fourth organic compound has an electron transporting property.