Local flat emitter mfr. for solar cell prodn.

摘要

The method for manufacturing flat emitter contacts between contact fingers formed by template stamp or screen process for solar cell contacts and using an antireflection layer contains the following steps: (a) the complete solar cell (10) with contacts and without antireflection layer is pre-warmed in demineralised water; (b) the surface (5) of the emitter layer (1) between contact fingers (4) is etched in a basic solution at a temperature of 50 deg.C to 80 deg.C.; (c) the surface is rinsed in demineralised water and then (d) dried. The etching solution is 1 to 10% KOH solution.