Method of manufacturing thin film solar cells

A method for manufacturing a thin film solar cell, comprising:

• forming a light-permeable first electrode layer on a backlight surface of a glass substrate, and forming a plurality of first openings on the first electrode layer such that a part of the backlight surface is exposed through the first openings;
• forming a photoelectric conversion layer on the first electrode layer and the part of the backlight surface exposed through the first openings, and forming a plurality of second openings in the photoelectric conversion layer such that a part of the first electrode layer is exposed through the second openings;
• and
• simultaneously forming both
• a glistening second electrode layer, by a non-vacuum coating process, on the photoelectric conversion layer and a wall of each of the second openings, and
• a plurality of third openings in the glistening second electrode layer,
• wherein the non-vacuum coating process is a screen printing, transfer printing or ink jet process, the plurality of third openings expose the part of the first electrode layer through the second openings, and the second electrode layer includes conductive colloids comprised of non-diffractive filling material and polymeric base material.