Method for forming nano size turf on transparent polymer films used in solar cells, and method for enhancing transmittance of transparent polymer films of solar cells

A method for enhancing a transmittance of an antireflection transparent polymer film used in a solar cell characterized in changing the refraction index of incoming light by forming circular cone-shaped nano size turfs on the surface of a transparent polymer film used in a solar cell by means of the method consisting of:

• a first step for attaching a transparent polymer film on a glass;
• a second step for installing the glass prepared in the first step on an upper side of electrodes provided in a chamber which forms either a vacuum environment or an atmospheric environment;
• and
• a third step for supplying an electric power to the electrodes under the environment formed in the second step, etching the transparent polymer film attached on the surface of the glass without any mask to form nano size turfs in circular cone shapes on the surface of the transparent polymer film,
• wherein said transparent polymer film of the first step is selected from the group consisting of Fluorinated Ethylene Propylene (FEP), PerFluoroAlkoxy (PFA), PolyVinyl Fluoride (PVF), PolyVinylidene Fluoride (PVDF), Polymethyl Methacrylate, Polyethylene Terephthalate (PET) and Polycarbonate (PC).