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

摘要

A light-emitting element including a light-emitting layer (111) and a control layer (121) between a first electrode (102) and a second electrode (104) is provided. The control layer includes a first organic compound and a second organic compound. The amount of the included first organic compound is larger than the amount of the included second organic compound. The second organic compound has the property of trapping carriers that have the same polarity as carriers transported by the first organic compound. The concentration and carrier-trapping property of the second organic compound included in the control layer satisfy certain conditions.