Patent ID: 8053338

Claim:
A method for fabricating a solar cell including lamination layers comprising: holding a substrate on a plane of a substrate holder, wherein the substrate holder is opposite to an electrode in a reaction chamber and the plane is parallel to a surface of the electrode; introducing a reactive gas into the reaction chamber; supplying an electric power to the electrode to produce a plasma of the reactive gas in a space; forming a film on the substrate by plasma CVD using the plasma of the reactive gas; introducing a cleaning gas into the reaction chamber after the formation of the film; and cleaning an inside of the reaction chamber by applying an electric power to the cleaning gas, wherein at least one insulator is located in the reaction chamber so as to surround the space between the electrode and the substrate holder, wherein a distance between the substrate holder and the electrode during the cleaning is larger than a distance between the substrate holder and the electrode during the formation of the film, and wherein the cleaning is carried out when a thickness of a film attached to the insulator becomes 10 μm or more.