| abstract |
According to one embodiment, a solar cell includes a substrate, a stacked body, and an optical layer. The substrate is light-transmissive. The stacked body is provided at the substrate. The stacked body includes a first electrode, a photoelectric conversion film, and a second electrode, the photoelectric conversion film including an organic semiconductor. The second electrode is light-transmissive. The optical layer is provided at the substrate. The optical layer includes a plurality of lenses. A focal length of each of the plurality of lenses is shorter than 0.5 times a distance between the stacked body and each of the plurality of lenses. |