Photovoltaic component and module
AssigneeShell Oil Company
InventorWolfgang Krühler
Life of this patent
Estimating the term…
Abstract
A photovoltaic component with at least one silicon wafer that has a certain basic doping, a light-receiving side, and electric bonding side opposite the light-receiving side, and at least one interdigital semiconductor structure arranged on the electric bonding side with at least one n-type semiconductor part-structure and at least one p-type semiconductor part-structure arranged at a certain interval to the n-type semiconductor part-structure. One of the semiconductor part-structures and the silicon wafer thus forms a p-n junction. The silicon wafer may be a tri-crystalline wafer.
Claims9
A method of manufacturing a photovoltaic component, wherein said method comprises providing a silicon wafer having a predetermined basic doping, a light-receiving side and an electric bonding side opposite to the light-receiving side and wherein said method further comprises the steps of:
- (a) producing a doped layer on the electric bonding side of the silicon wafer only, wherein the doping of the doped layer differs from the predetermined basic doping of the silicon wafer to get a p-n junction in the silicon wafer;
- (b) applying on the doped layer an n-type dopant for producing an n-type semiconductor part-structure and a p-type dopant for producing a p-type semiconductor part-structure of an interdigital semiconductor structure, and allowing the dopants to diffuse into the doped layer, thereby forming the semiconductor part-structures;
- and
- (c) separating the semiconductor part-structures by removing the doped layer in the intervals between the semiconductor part-structures.
Dependencies are inferred from the claim text.