Provided is a photoelectric conversion element including: a first electrode that includes a photosensitive layer containing a perovskite-type light absorbing agent on a conductive support; and a second electrode that is opposite to the first electrode. The perovskite-type light absorbing agent includes a metal cation M1 as a central ion of a perovskite-type crystal structure thereof, and a metal cation M2, of which a valence is different from a valence of the metal cation M1, of a metal atom other than elements of Group 1 in the periodic table. In addition, there are provided a solar cell, a method of manufacturing the photoelectric conversion element, and a metal salt composition.