SOLAR CELL AND METHOD FOR PRODUCING SAME

摘要

The present invention relates to a solar cell (1) comprising a semiconductor wafer (3), at least one dielectric layer (5) arranged on the semiconductor wafer (3), a metal layer (7) arranged on the dielectric layer, and a contact structure arranged in the dielectric layer (5) such that the contact structure provides an electrical connection between the metal layer (7) and the semiconductor wafer (3), wherein the contact structure has at least one first structure (9a) having a minimum dimension and at least one second structure (9b) having a maximum dimension, wherein the minimum dimension and the maximum dimension are defined along a surface of the semiconductor wafer (3) and the minimum dimension of the first structure (9a) is greater than the maximum dimension of the second structure (9b). Furthermore, the present invention relates to a solar cell production method, comprising the following method steps: providing a semiconductor wafer (3) with at least one dielectric layer (5), forming a metal layer (7) on the dielectric layer (5) and a contact structure arranged in the dielectric layer (5), such that the contact structure provides an electrical connection between the metal layer (7) and the semiconductor wafer (3), wherein at least one first structure (9a) having a minimum dimension and at least one second structure (9b) having a maximum dimension are formed as contact structure, such that the minimum dimension of the first structure (9a) is greater than the maximum dimension of the second structure (9b).