Patent ID: 8895116

Claim:
A manufacturing method of a crystalline semiconductor film using a film formation apparatus, the film formation apparatus comprising: a treatment room; an upper electrode with a gas introduction port; a dispersion plate with a peripheral portion with a plurality of gas holes and a center portion with no gas hole; a first gas diffusion area between the upper electrode and the dispersion plate; a shower plate with a plurality of gas holes; a second gas diffusion area between the dispersion plate and the shower plate; and a lower electrode in the treatment room, wherein the center portion of the dispersion plate faces the gas introduction port, wherein a diameter of the center portion of the dispersion plate with no gas hole is larger than a diameter of the gas introduction port, and wherein the lower electrode faces the upper electrode with the dispersion plate, the first gas diffusion area, the second gas diffusion area and the shower plate interposed therebetween, wherein the method for forming the crystalline semiconductor film using the film formation apparatus comprising the steps of: supplying a film formation gas into the treatment room from the gas introduction port through the first gas diffusion area, the plurality of gas holes of the dispersion plate, the second gas diffusion area, and the plurality of gas holes of the shower plate; setting pressure of the treatment room at greater than or equal to 2000 Pa and less than or equal to 100000 Pa by introducing the film formation gas; generating glow discharge plasma by supplying high-frequency power with uniform electric field intensity from a surface of the upper electrode and generating an electric field in the treatment room; generating crystal nuclei on a substrate provided on the lower electrode; and growing the crystal nuclei generated on the substrate.