METHOD FOR PRODUCING A SOLAR CELL AND A SOLAR CELL PRODUCED ACCORDING TO SAID METHOD

摘要

The problem posed by both conventional and novel crystalline silicon solar cells is the electrical isolation of layers doped with p and n conductivity types. The invention solves said problem in a simple and elegant manner. A masking paste is applied locally to at least one side of the silicon substrate and is subsequently dried. A doping material diffusion is then carried out, whereby the conductivity type of the doping material is in opposition to that of the base doping of the crystalline silicon substrate. In one of the subsequent production steps of the solar cell, the electric contacts are applied in such a way that at least one section of said contacts is isolated electrically from the rest of the contact by the masking paste. The masking paste thus allows an electrical isolation of the two external contacts of a solar cell by preventing the diffusion of one doping material using said paste. Other methods that achieve the same results are substantially more complex and expensive to use.