Solar cell, manufacturing method thereof and electrode material

A method of manufacturing a solar cell comprising:

• forming microscopic protrusions and recesses on a surface of a semiconductor substrate of one conductivity-type;
• forming a diffusion layer by diffusing an impurity of an opposite conductivity-type on the surface of the semiconductor substrate of the one conductivity-type, so that a sheet resistance of the surface of the semiconductor substrate becomes in a range of 60-300 ohms/square;
• forming an antireflective film on the surface of the semiconductor substrate that is formed with the diffusion layer;
• applying electrode material on the antireflective film, the electrode material comprising a mixture of silver, glass frit and a zinc component not part of the glass frit in the form of a paste, wherein the zinc component contacts the antireflective film, wherein the zinc component is in any form selected from a group consisting of metal powder, oxide powder, organometallic compound and inorganic compound;
• and
• firing the electrode material to come in ohmic contact with the diffusion layer.