Dielectric coating of the edge of a solar cell

摘要

A method of processing a solar cell is disclosed, where the edges of the solar cell are covered, coated or masked during the ion implantation process and/or the screen printing process. This covering may be a substance that blocks the penetration of ions during implantation, or may be a substance that resists the diffusion of fritted metal paste during the metallization process. In some embodiments, the edges are covered during both of these processes. In further embodiments, the same material may perform both functions.

主权项

1. A method for processing a solar cell comprising:
applying a polymeric dielectric precursor to an edge of the solar cell; subjecting the solar cell to a thermal treatment after applying the polymeric dielectric precursor, where the polymeric dielectric precursor is transformed into an inorganic dielectric material by the thermal treatment; and screen printing fritted metal paste onto the solar cell after applying the polymeric dielectric precursor, wherein the inorganic dielectric material prevents the fritted metal paste from permeating the edge of the solar cell.