Patent ID: 8173475

Claim:
A method of producing a photoelectric conversion device having a multilayer structure formed on a substrate, the multilayer structure including a lower electrode, a photoelectric conversion layer made of a compound semiconductor layer, an n-type buffer layer made of a compound semiconductor layer, and a transparent conductive layer, the method comprising: a step of preparing a reaction solution comprising an aqueous solution containing an n-type dopant element, at least one of ammonia and an ammonium salt, and thiourea; a diffusion step of diffusing the n-type dopant into the photoelectric conversion layer by immersing the substrate including the lower electrode and the photoelectric conversion layer formed thereon in the reaction solution controlled to a predetermined temperature in a -range from 20° C. to 45° C.; and a deposition step of depositing the buffer layer on the photoelectric conversion layer by immersing the substrate including the lower electrode and the photoelectric conversion layer subjected to the diffusion step in the reaction solution controlled to a predetermined temperature in a range from 70° C. to 95° C.