NOVELTY - A photovoltaic cell (20) comprises base substrate (22) comprising silicon and upper doped region; coating layer (32) disposed on region and having outer surface; several fingers (36), comprising first metal, disposed in layer, each of fingers having lower portion in electrical contact with region, and upper portion; and busbar (44) comprising second and third metal spaced from region such that region is free of physical contact with busbar, and busbar is in electrical contact with upper portions of fingers, or region is in electrical communication with busbar via fingers.    USE - As photovoltaic cell (claimed) for converting light of many different wavelengths into electricity, in solar module.    ADVANTAGE - The coating layer increases the sunlight absorption by the photovoltaic cell (PV cell) e.g. by reducing reflectivity of the PV cell, as well as improving wafer lifetime through surface and bulk passivation. The physical separation of busbar and the upper doped region reduces minority carrier recombination at the metal and silicon interfaces. By reducing the area of metal/silicon interface, loss due to recombination is generally reduced and open-circuit voltage and short-circuit current density are generally improved. By utilizing the supplemental fingers, the size of the fingers can be reduced, which can reduce cost of manufacture and/or improve adhesion. The composition is generally free of components capable of etching into the cover layer, e.g. fritted glass, such that the cover sheet is not etched by the composition.    DETAILED DESCRIPTION - A photovoltaic cell (20) comprises a base substrate (22) comprising silicon and upper doped region; a coating layer (32) disposed on the upper doped region and having an outer surface; several fingers (36) spaced from each other and disposed in the coating layer and each of fingers having a lower portion in electrical contact with the upper doped region, and an upper portion opposite the lower portion extending outwardly through the outer surface of coating layer, with each of fingers comprising a first metal in a majority amount; and a busbar (44) spaced from upper doped region such that the region is free of physical contact with busbar. The busbar is in electrical contact with upper portions of fingers and comprising a second metal in a majority amount. The busbar further comprises a third metal different from first metal of fingers and second metal of busbar. The third metal has a melting temperature of not greater than 300 degrees C; and the upper doped region is in electrical communication with busbar via fingers. The base substrate further includes a lower doped region opposite the upper doped region. The upper doped region of base substrate is n-type doped region or p-type doped region. The cell further comprises several supplemental fingers disposed over and in electrical contact with fingers, with each of supplemental fingers comprising silver or copper in a majority amount, and supplemental fingers are different from fingers; a supplemental busbar disposed over and in electrical contact with busbar, and the supplemental busbar is different from busbar; and at least one ribbon in physical contact with busbars such that photovoltaic cells are in electrical communication with each other via ribbon. An INDEPENDENT CLAIM is included for forming the photovoltaic cell involving applying a composition comprising a second metal present in the composition in a majority amount and a third metal to at least a portion of the upper portions of the fingers to form a layer such that the upper doped region of the base substrate is free of physical contact with the layer, and heating the layer to not greater than 300 degrees C to form the busbar, where the third metal of the busbar is different from the first metal of the fingers and the second metal of the composition, and the upper doped region of the base substrate is in electrical communication with the busbar via the fingers.    DESCRIPTION OF DRAWING(S) - The figure shows a front view of the photovoltaic cell including base substrate, coating layer, fingers, and pair of busbars.    Photovoltaic cell (20)    Base substrate (22)    Coating layer (32)    Fingers (36)    Busbars (44)