ORGANIC PHOTOELECTRIC CONVERSION ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide an organic photoelectric conversion element which has a heterojunction-type active layer and is excellent in photoelectric conversion efficiency.SOLUTION: An organic photoelectric conversion element comprises: a first electrode; a second electrode; and a first active layer and a second active layer abutting against the first active layer which are provided between the first electrode and the second electrode. The first active layer contains a first active material as an organic material, and the second active layer contains a second active material. Electrons or holes are injected from the first active layer to the second active layer. Excitons generated by photoexcitation in the first or second active layer have a diffusion length of at least 20 nm in the first or second active layer.