Serial connection of thin-layer solar cells

摘要

The invention relates to a serial connection of thin layer solar cells. The invention provides a structuring method for creating a reliable and effective connections, preventing short-circuits and enlarging usable solar cell surfaces. The solar cells comprise a substrate, a back contact layer, an absorber layer, a buffer layer, and a transparent front contact layer. Each solar cell is subdivided by three trenches A, B, C to create a plurality of adjacent cell segments. Trenches A and B extend down to the back contact layer, trench C extends down to the substrate. Trench C is filled with electrically insulating paste and trench B is filled with electrically conducting paste. The electrically conducting paste also covers trench C. The adjacent cell segments are electrically connected. Trench A is then created and filled with electrically insulating paste.

主权项

1. A method of making a serial connection of thin-layer solar cells, the solar cells comprising a substrate, a back contact layer, an absorber layer, a buffer layer, and a transparent front contact layer, the method comprising inserting trenches into the solar cells and producing an electrical contact,
wherein each solar cell is subdivided by three trenches A, B, C to create a plurality of adjacent cell segments, wherein trenches A and B extend down to the back contact layer, trench C extends down to the substrate, wherein trench C is are filled with electrically insulating paste, trench B is to be filled with electrically conducting paste, the electrically conducting paste also covering trench C, and the adjacent cell segments are electrically connected, and wherein trench A is created thereafter and filled with electrically insulating paste.