| 摘要 |
PROBLEM TO BE SOLVED: To provide an organic thin-film light-emitting element improved in driving voltage, luminous efficiency, and durable life.SOLUTION: The light-emitting element in which at least a hole transport layer, a light-emitting layer, and an electron transport layer exist between an anode and a cathode and which emits light by electrical energy is characterized in that: the hole transport layer contains a compound of a specific structure; and the electron transport layer contains a heterocyclic derivative containing an electron-accepting nitrogen of a specific structure. |
