Method of manufacturing solar cell and solar cell

A method of manufacturing a solar cell, the method comprising:

• forming a first carrier transport layer on a first electrode layer of a substrate including the first electrode layer;
• forming, on the first carrier transport layer, a photoelectric conversion layer that contains an organic-inorganic perovskite compound as a main component;
• forming a second carrier transport layer on the photoelectric conversion layer;
• and
• forming a second electrode layer on the second carrier transport layer,
• wherein the substrate is a transparent substrate,
• wherein, in a case where the first electrode layer is a transparent electrode layer, the method further includes, before the forming the first carrier transport layer, forming a nanoparticle layer by applying, onto the transparent electrode layer, a dispersion liquid that contains nanoparticles including the same material as the transparent electrode layer, and
• wherein, in a case where the second electrode layer is a transparent electrode layer, the method further includes, between the forming the second carrier transport layer on the photoelectric conversion layer and the forming the second electrode layer on the second carrier transport layer, forming a nanoparticle layer by applying, onto the second carrier transport layer, a dispersion liquid that contains nanoparticles including the same material as the transparent electrode layer.