| abstract |
An organic thin-film solar cell having high fill factor, open-circuit voltage, photoelectric conversion efficiency, and durability, and an organic semiconductor material constituting the organic thin-film solar cell. An organic photoelectric conversion element having a cathode, an anode, and a bulk heterojunction layer in which a p-type semiconductor material and an n-type semiconductor material are mixed, wherein at least the following general formula is provided between the bulk heterojunction layer and the cathode. It has a compound layer represented by (1). [Selection figure] None |