| 摘要 |
PROBLEM TO BE SOLVED: To provide a quantum dot solar cell capable of enhancing current collection of carrier and photoelectric conversion efficiency.SOLUTION: Quantum dot layers 1, 3 and joining layers 5 are laminated alternately. A plurality of quantum dot layers 1, 3 have different bandgaps, and a columnar carrier collection part 7 elongating in the thickness direction of the quantum dot layers 1, 3 is provided in the plurality of quantum dot layers 1, 3. The carrier collection part 7 may be provided on the joining layer 5, and may be provided on a plurality of joining layer 5, respectively. From the light incidence surface 13a side toward the light emission surface 13b side, the quantum dot layers 1, 3 become thicker, and the heights H, Hof the carrier collection part 7 increase in the thickness direction.SELECTED DRAWING: Figure 1 |
