Patent ID: 8778723
Filing Date: 2014-07-15
Classification: H01L,Y02E

Abstract:
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.