Solar cell

A solar cell comprising:

• a substrate;
• a first electrode;
• an electron transport layer;
• a first photoelectric conversion layer;
• and
• a coating layer,
• wherein the first photoelectric conversion layer is disposed between the first electrode and the substrate,
• the substrate has a first main surface and a second main surface, and the second main surface of the substrate has an uneven structure,
• the electron transport layer has a first main surface and a second main surface, and the first main surface and the second main surface of the electron transport layer each have an uneven structure,
• the first photoelectric conversion layer has a first main surface and a second main surface,
• the second main surface of the substrate faces the first main surface of the electron transport layer,
• the second main surface of the electron transport layer faces the first main surface of the first photoelectric conversion layer,
• the second main surface of the electron transport layer has a first region not covered by the first photoelectric conversion layer and a second region covered by the first photoelectric conversion layer,
• the first photoelectric conversion layer contains a perovskite compound,
• the first region is covered by the coating layer, and
• the coating layer contains an oxide semiconductor.