ORGANIC ELECTROLUMINESCENT ELEMENT AND DISPLAY DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an organic electroluminescent element having high light emission efficiency and improved reliability.

SOLUTION: The organic electroluminescent element includes an organic layer 20 including a light emission layer 23 between a positive electrode 11 containing at least aluminum and a negative electrode 31. The organic layer 20 has a hole injection layer 21 consisting of a sulfonic acid derivative between the positive electrode 11 and the light emission layer 23. Since the hole injection layer 21 consists of a sulfonic acid derivative, a hole injection property improves and thereby holes are efficiently transported from the positive electrode 11 to the light emission layer 23.

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