[EN] LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE<br/>[FR] ÉLÉMENT ÉLECTROLUMINESCENT, DISPOSITIF ÉLECTROLUMINESCENT, DISPOSITIF ÉLECTRONIQUE, ET DISPOSITIF D'ÉCLAIRAGE
申请人:SEMICONDUCTOR ENERGY LAB
公开号:WO2014046221A1
公开(公告)日:2014-03-27
A light-emitting element emitting phosphorescence and having high emission efficiency, in which a property of injecting holes to a light-emitting layer is increased, is provided. The light-emitting layer of the light-emitting element includes a first organic compound represented by the following general formula (G1) and a second organic compound which is a phosphorescent compound. The difference between the HOMO level of the first organic compound and the HOMO level of the second organic compound is lower than or equal to 0.3 eV.