| 摘要 |
PROBLEM TO BE SOLVED: To provide a photoelectric cell which shows advanced thermal stability.SOLUTION: The photoelectric cell comprises a first electrode, a second electrode, and an active layer disposed between the first and the second electrodes. The active layer includes an electron donor material and an electron acceptor material. The electron acceptor material includes a first fullerene and a second fullerene different from the first fullerene, of which the first fullerene is an unsubstituted fullerene and the second fullerene is a substituted fullerene. The unsubstituted and the substituted fullerenes are selected from the group consisting of C, C, C, C, C, Cand C, and a weight ratio of the first fullerene to the second fullerene is 1:20 at least and 10:1 at the very most. |
