| 摘要 |
A fullerene derivative having two or more structures represented by the formula (1) can increase light absorption in a long wavelength range when used for an organic photovoltaic cell. In the formula (1), C1 and C2 represent carbon atoms constituting the fullerene skeleton. m represents an integer from 1 to 6, and n represents an integer from 1 to 4. p represents an integer of 0 or more, and R represents a monovalent organic group. Q represents a single bond, an arylene group, or a divalent heterocyclic group. When m is plurally present, these m may be the same or different from each other.
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