A fullerene derivative, with a solubility in n-hexane of not lower that 0.1 mg/ml at 25 C., includes a fullerene skeleton and three or more organic groups attached to the fullerene skeleton, where each of the organic groups is represented by the general formula (III):

where X represents an element belonging to the group 14 in the periodic table; and R₂, R₃ and R₄ may be the same or different and each represents a hydrogen atom, hydrocarbon group, alkoxy group or amino group.