A photoelectric conversion element has a structure where a hole transport layer, a photoelectric conversion layer, and an electron transport layer are held between a first electrode and a second electrode. The photoelectric conversion layer is a bulk heterojunction layer, and fullerene or a fullerene derivative is used as an n-type organic semiconductor. As a p-type organic semiconductor, a polymer represented by the following Expression is used. In the Expression, R1, R2, R3, and R4 each independently represent any one of a branched alkyl group, a linear alkyl group, an alkyl ester group, a carboxy alkyl group, and an alkoxy group. Independently, X is any one of S, O, and N.
一种光电转换元件具有以下结构:第一电极和第二电极之间保持着一个空穴传输层、一个光电转换层和一个电子传输层。光电转换层是一个体异质结层,
富勒烯或
富勒烯衍
生物被用作n型有机半导体。作为p型有机半导体,使用以下表达式表示的
聚合物。在该表达式中,R1、R2、R3和R4各自独立地表示支链烷基、线性烷基、烷基
酯基、羧基烷基和烷
氧基中的任何一种。独立地,X是S、O和N中的任何一种。