A photoelectric conversion material includes a germanane derivative having a composition represented by GeXMYHZ. M includes at least one of Ga and In. X≥Y, X≥Z>0, and X+Y=1 are satisfied. A solar cell includes: a first electrode having electrical conductivity; a second electrode having electrical conductivity; and a light-absorbing layer between the first electrode and the second electrode, the light-absorbing layer converting incident light into electric charge. The light-absorbing layer includes the photoelectric conversion material above.