Abstract: Embodiments relate to a solar module comprising a plurality of photovoltaic (PV) elements (strips) arranged in series in an overlapping shingled configuration to provide a string. Conducting wires exhibiting low series resistance are disposed along the direction of serial connection of the strips. The wires overlap and are in contact with conducting fingers exhibiting higher series resistance, that extend in other than the direction of serial connection. The fingers receive current from underlying areas of the shingled strip. The current is collected by the wire and transmitted along the line of serial electrical communication. Because the photovoltaic (PV) current is carried primarily by the wires (rather than the fingers), series resistance can be reduced and Fill Factor (FF) may be improved. This in turn leads to lower Cell-To-Module (CTM) loss and higher module power.

Abstract: A semiconductor module comprises a string made up of a plurality of cells or strips arranged in series. A front surface of at least one cell or strip, has a polarity opposite to that of the front surface of another cell or strip in the string. In some embodiments the strips may comprise photovoltaic devices of different structures, for example Heterojunction (HJT) and Tunnel Oxide Passivated Contact (TOPCon). According to certain embodiments, one or more cells or strips of the string may be arranged in an overlapping shingled configuration, such that a front surface of the overlapped strip exhibits the appropriate polarity. For particular embodiments, one or more cells or strips may be adjacent in the string, such that a cell or strip has a front or back surface of polarity appropriate to connect with the adjacent cell or strip (e.g., using a ribbon located on a same surface).