Abstract
Conversion efficiencies of crystalline silicon based solar cells are today pushed close to the theoretical limits. Unfortunately the fabrication processes of these high-efficiency solar cells are far too expensive in scope of commercial manufacturing of the solar cells. Low cost fabrication process for single crystalline, pn-junction silicon solar cells is described in this paper. The specialty of this process is the use of the copper as solar cells contact material instead of traditional solutions that are based on screen printing technique. This alternative metallization method does not increase the production costs significantly, but offers several advantages over the commonly used screen printing of aluminium or silver.
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