An organic photoelectronic conversion element having a sufficiently high open-circuit voltage can be produced by using a fullerene derivative comprising a structure represented by formula (1) and one or more structures selected from the group consisting of a structure represented by formula (2-1) and a structure represented by formula (2-2).
[wherein, ring A represents a fullerene skeleton, ring B represents a heterocyclic ring having a carbon number of 3 to 6, R represents a monovalent group, and k represents an integer of 1 to 8; and when there is a plurality of Rs, the Rs may be the same or different.]
[wherein, ring D represents an aromatic ring.]
[wherein, ring D represents an aromatic ring.]
使用式(1)表示的结构和式(2-1)和/或式(2-2)表示的一种或多种结构,其中环A表示
富勒烯骨架,环B表示具有3至6个碳原子的杂环,R表示单价基团,k表示1至8的整数;当存在多个R时,R可以相同或不同,可以制备出具有足够高开路电压的有机光电转换元件。其中,环D表示芳香环。