Abstract: A solar cell can include a first plurality of metal contact fingers, and a second plurality of metal contact fingers interdigitated with the first plurality of metal contact fingers, wherein at least one of the first plurality of metal contact fingers comprises a wrap-around metal finger that passes between a first edge of the solar cell and at least one contact pads. A photovoltaic (PV) string including a solar cell with a wrap-around metal contact finger. A method of coupling an electrically conductive connector to a solar cell with a wrap-around metal contact finger.

Abstract: A solar cell can include a first plurality of metal contact fingers, and a second plurality of metal contact fingers interdigitated with the first plurality of metal contact fingers, wherein at least one of the first plurality of metal contact fingers comprises a wrap-around metal finger that passes between a first edge of the solar cell and at least one contact pads. A photovoltaic (PV) string including a solar cell with a wrap-around metal contact finger. A method of coupling an electrically conductive connector to a solar cell with a wrap-around metal contact finger.

Abstract: Wire-based metallization and stringing techniques for solar cells, and the resulting solar cells, modules, and equipment, are described. In an example, a string of solar cells includes a plurality of back-contact solar cells, wherein each of the plurality of back-contact solar cells includes P-type and N-type doped diffusion regions. A plurality of conductive wires is disposed over a back surface of each of the plurality of solar cells, wherein each of the plurality of conductive wires is substantially parallel to the P-type and N-type doped diffusion regions of each of the plurality of solar cells. One or more of the plurality of conductive wires adjoins a pair of adjacent solar cells of the plurality of solar cells and has a relief feature between the pair of adjacent solar cells.

Abstract: Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, forming a first semiconductor region and a second semiconductor region on the back side of a substrate. A first conductive busbar can be formed above the first semiconductor region. A first portion of a second conductive busbar can be formed above the second semiconductor region. A second portion of the second conductive busbar can be formed above the second semiconductor region, where a separation region separates the second portion and the first portion of the second conductive busbar. A third conductive busbar can be formed above the first semiconductor region. A first conductive bridge can be formed above the separation region, where the first conductive bridge electrically connects the first conductive busbar to the third conductive busbar.

Abstract: Wire-based metallization and stringing techniques for solar cells, and the resulting solar cells, modules, and equipment, are described. In an example, a string of solar cells includes a plurality of back-contact solar cells, wherein each of the plurality of back-contact solar cells includes P-type and N-type doped diffusion regions. A plurality of conductive wires is disposed over a back surface of each of the plurality of solar cells, wherein each of the plurality of conductive wires is substantially parallel to the P-type and N-type doped diffusion regions of each of the plurality of solar cells. One or more of the plurality of conductive wires adjoins a pair of adjacent solar cells of the plurality of solar cells and has a relief feature between the pair of adjacent solar cells.

Abstract: Wire-based metallization and stringing techniques for solar cells, and the resulting solar cells, modules, and equipment, are described. In an example, a string of solar cells includes a plurality of back-contact solar cells, wherein each of the plurality of back-contact solar cells includes P-type and N-type doped diffusion regions. A plurality of conductive wires is disposed over a back surface of each of the plurality of solar cells, wherein each of the plurality of conductive wires is substantially parallel to the P-type and N-type doped diffusion regions of each of the plurality of solar cells. One or more of the plurality of conductive wires adjoins a pair of adjacent solar cells of the plurality of solar cells and has a relief feature between the pair of adjacent solar cells.

Abstract: A solar cell can include a first plurality of metal contact fingers, and a second plurality of metal contact fingers interdigitated with the first plurality of metal contact fingers, wherein at least one of the first plurality of metal contact fingers comprises a wrap-around metal finger that passes between a first edge of the solar cell and at least one contact pads. A photovoltaic (PV) string including a solar cell with a wrap-around metal contact finger. A method of coupling an electrically conductive connector to a solar cell with a wrap-around metal contact finger.

Abstract: Methods of fabricating a solar cell including metallization techniques and resulting solar cells, are described. In an example, forming a first semiconductor region and a second semiconductor region on the back side of a substrate. A first conductive busbar can be formed above the first semiconductor region. A first portion of a second conductive busbar can be formed above the second semiconductor region. A second portion of the second conductive busbar can be formed above the second semiconductor region, where a separation region separates the second portion and the first portion of the second conductive busbar. A third conductive busbar can be formed above the first semiconductor region. A first conductive bridge can be formed above the separation region, where the first conductive bridge electrically connects the first conductive busbar to the third conductive busbar.

Abstract: Solar cells can include a plurality of sub-cells that include a singulated and physically separated semiconductor portion such that adjacent ones of the singulated and physically separated semiconductor portions can have a groove therebetween. The solar cells can include a metallization structure that couples ones of the plurality of sub-cells. An interconnect structure can couple adjacent ones of the solar cells.