PHOTOVOLTAIC SOLAR CELL AND A METHOD FOR THE PRODUCTION OF SAME

摘要

The invention relates to a photovoltaic solar cell for converting incident electromagnetic radiation into electrical energy, comprising at least one base region of a base-doping type, designed in a silicon substrate; at least one emitter region of an emitter-doping type that is of an opposite doping type to the base-doping type; at least one metallic base-contacting structure connected, in an electrically conductive manner, to the base region, and at least one metallic emitter-contacting structure connected, in an electrically conductive manner, to the emitter region, the base region and emitter region being arranged in such a manner that a pn-junction is formed at least in some regions between said base and emitter regions. It is essential that the base-contacting structure overlaps the emitter region in a base-bypass region and that in said overlap region, a diode-like semiconductor contact is designed between the base-contacting structure and the emitter region, said semiconductor contact being designed as a metal semiconductor contact or as a metal-insulator-semiconductor contact, and/or that the emitter-contacting structure overlaps the base region in an emitter-bypass region and that in this overlap region, a diode-like semiconductor contact is designed between the emitter-contacting structure and the base region, said semiconductor contact being designed as a metal semiconductor contact or as a metal-insulator-semiconductor contact. The invention also relates to a method for producing a solar cell.