Abstract: The present disclosure relates to electrical connections between shingled solar cells in a solar cell assembly. More particularly, the present disclosure describes the use of low temperature metallic interconnects that reduce resistivity between solar cells and assembly time. In an aspect, an assembly of shingled solar cells is described that includes a first solar cell having an insulating film on a back side, the insulating film having vias that expose a back metal layer of the first solar cell, and a second solar cell having a bus bar on a front side. In this assembly, the back metal layer of the first solar cell is electrically connected to the bus bar of the second solar cell through multiple electrical connections formed by low temperature solder that fills the vias in the insulating film of the first solar cell. A method of fabricating or manufacturing the assembly is also described.

Abstract: This disclosure describes various structures, devices, and arrangements that replace a PSA used to hold shingled cells together with an adhesive film. For example, in an aspect, the present disclosure is directed to a shingled arrangement of photovoltaic (PV) cells. In some aspects, the shingled arrangement of PV cells may include a first PV cell, a second PV cell, and an adhesive film placed between a backside the first PV cell and a front side of the second PV cell. The adhesive film may be thermally bonded to the first PV cell and to the second PV cell after the application of localized heat and pressure and holds the first PV cell and the second PV cell together. Additionally, a bus bar of the second PV cell may be electrically connected to the first PV cell by a conductive via formed through the adhesive film.

Abstract: This disclosure describes various structures, devices, and arrangements that replace a PSA used to hold shingled cells together with an adhesive film. For example, in an aspect, the present disclosure is directed to a shingled arrangement of photovoltaic (PV) cells. In some aspects, the shingled arrangement of PV cells may include a first PV cell, a second PV cell, and an adhesive film placed between a backside the first PV cell and a front side of the second PV cell. The adhesive film may be thermally bonded to the first PV cell and to the second PV cell after the application of localized heat and pressure and holds the first PV cell and the second PV cell together. Additionally, a bus bar of the second PV cell may be electrically connected to the first PV cell by a conductive via formed through the adhesive film.