METHOD AND DEVICE FOR PRODUCING A SELECTIVE EMITTER STRUCTURE FOR A SOLAR CELL, SOLAR CELL

摘要

The invention relates to a method for producing a selective emitter structure (8) on a useful side (3) of a solar cell (1), wherein the emitter structure (8) comprises a doped emitter layer (4) and several contact elements (5), in particular contact fingers, arranged on the emitter layer, and wherein the emitter layer (4) is provided with higher doping in the region below the contact elements (5) than in the region between the contact elements (5). The following steps are provided: a) providing the solar cell (1) having an emitter layer that is doped overall, b) producing the contact elements (5) on the emitter layer (4), and c) reducing the doping of the emitter layer (4) in the region between the contact elements (5) by an etching processing of the entire useful side (3) of the solar cell (1). The invention further relates to a device and a solar cell.

主权项

1. A method for producing a selective emitter structure (8) on a useful side (3) of a solar cell (1), wherein the emitter structure (8) comprises a doped emitter layer (4) and several contact elements (5), in particular contact fingers, arranged on the emitter layer (4), and wherein the emitter layer (4) is provided with higher doping in the region below the contact elements (5) than in the region between the contact elements (5), characterized by the following steps:
a) providing the solar cell (1) having an emitter layer (4) that is doped overall, b) producing the contact elements (5) on the emitter layer (4), and c) reducing the doping of the emitter layer (4) in the region between the contact elements (5) by an etching processing of the entire useful side (3) of the solar cell (1).