| 摘要 |
A method for preparing a silicon dioxide block layer for a group I-III-IV compound solar cell comprises the following steps: preparing an acid catalysis solution, of ortho-silicic acid alkyl ester, that comprises ortho-silicic acid alkyl ester, ethanol, H2O, and acid, and adding NH4OH water solution or adding NH4OH water solution and ethanol after placement, so as to obtain silica sol; coating the silica sol on a medium, and obtaining a gel membrane after aging; heating and drying the aged gel membrane to obtain a silicon dioxide block layer for a group I-III-IV compound solar cell. The method is simple and is suitable for batch production, and the obtained silicon dioxide block layer can better block heteroatoms on a substrate of the solar cell from spreading. |
