Patent ID: 7927498
Filing Date: 2011-04-19
Classification: H01L,Y02E

Abstract:
1. A method of texturing a surface of a substrate for a solar cell comprising: coating an ink containing metal particles on the surface of the substrate; drying the ink to attach the metal particles to the surface of the substrate; wet etching the surface of the substrate using the metal particles as a catalyst to form an uneven portion; and after forming the uneven portion, removing the metal particles remaining after etching the surface of the substrate from the surface of the substrate, wherein the removing of the metal particles includes using an aqueous solution obtained by mixing iodine (I) with potassium iodine (KI) in case the remaining metal particles are formed of Au, wherein the removing of the metal particles includes using nitrate-based (NO wherein the removing of the metal particles includes using one of bromide-based, chloride-based, nitrate-based, and sulfate-based aqueous solutions, or a mixed aqueous solution thereof in case the remaining metal particles are formed of Cu, wherein the removing of the metal particles includes using an aqueous solution obtained by mixing H wherein removing the metal particles includes using one of chloride-based and nitrate-based aqueous solutions, or a mixed aqueous solution thereof in case the remaining metal particles are formed of Pt or Pd.