TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Cell: Alternatively, the photovoltaic cell comprises: a base substrate comprising silicon and including a rear region; a first electrode disposed on the rear region of the base substrate and having an outer surface, with the electrode in electrical contact with the rear region of the base substrate and comprising a first metal present in the electrode in a majority amount; and a second electrode spaced from the rear region of the base substrate such that the rear region of the base substrate is free of physical contact with the second electrode, with the second electrode in electrical contact with the electrode; where the second electrode is formed at a temperature of not greater than 300 degrees C from a composition enabling the second electrode to be formed at the temperature, the composition comprising; a polymer, a second metal present in the second electrode in a majority amount, and a third metal different from the first metal of the electrode and the second metal of the second electrode; and where the rear region of the base substrate is in electrical communication with the second electrode via the electrode. In a second alternative case, the photovoltaic cell comprises: a base substrate comprising silicon and including a rear region selected from an n-type doped region and/or a p-type doped region; a first electrode disposed on the rear region of the base substrate and having an outer surface, with the electrode in electrical contact with the rear region of the base substrate and comprising a first metal comprising aluminum and/or silver present in the electrode in a majority amount; and a second electrode spaced from the rear region of the base substrate such that the rear region of the base substrate is free of physical contact with the second electrode, with the second electrode in electrical contact with the electrode; where the second electrode comprises; a polymer comprising an epoxy, an acrylic, or a combination, a second metal comprising copper or silver present in the second electrode in a majority amount, and a third metal comprising solder with the solder having a melting temperature of not greater than 300 degrees C; and where the rear region of the base substrate is in electrical communication with the second electrode via the first electrode. The rear region is further defined as a rear doped region. The base substrate further includes an upper doped region opposite the rear doped region. The rear region of the base substrate is an n-type doped region and/or a p-type doped region. The photovoltaic cell further comprises a passivation layer disposed on the regions of the base substrate with the passivation layer comprising SiOx, zinc sulfide (ZnS), MgFx, SiNx, SiCNx, AlOx, titanium dioxide (TiO2), a transparent conducting oxide (TCO), or combinations. The first metal of the electrode comprises aluminum and/or silver, the second metal of the second electrode comprises copper or silver, and the third metal of the second electrode comprises solder. The first metal of the electrode comprises aluminum and/or silver and the second metal of the second electrode comprises copper. The solder of the second electrode comprises a tin alloy and the polymer of the second electrode comprises an epoxy, an acrylic, or a combination. The second electrode is formed from a composition comprising: a copper powder as the second metal, a solder powder which melts at lower temperature than melting temperature of the copper powder, as the third metal, and the polymer, or a monomer which is polymerizable to yield the polymer. The second electrode is a pad or a busbar, and where the second electrode is directly solderable. The first electrode defines a least one hole and the second electrode is disposed over and at least partially within the at least one hole for electrical contact with the base substrate. The photovoltaic cell is further defined as an emitter-wrap through (EWT) photovoltaic cell where the base substrate defines a set of contact holes and the second electrode is further defined as a set of second electrodes with a second electrode disposed in each of the contact holes; or further defined as a metal-wrap through (MWT) photovoltaic cell where the base substrate defines a set of contact holes and the second electrode is further defined as a set of second electrodes with a second electrode disposed in each of the contact holes and in contact with a set of fingers disposed opposite the base substrate. Preferred Method: In forming the photovoltaic cell, the first metal of the first electrode comprises aluminum and/or silver, the second metal of the composition comprises copper or silver, and the third metal of the composition comprises solder. Applying the composition is further defined as printing the composition on the outer surface of the first electrode to define the second electrode, or further defined as electrochemically depositing the composition on the outer surface of the first electrode to define the second electrode. The composition comprises: a copper powder as the second metal, a solder powder which melts at lower temperature than melting temperature of the copper powder, as the third metal, and the polymer, or a monomer which is polymerizable to yield the polymer.