NOVELTY - Method (I) for improving electrical performance of an aluminum back contacted silicon solar cell, comprises: (a) providing a silicon wafer substrate; (b) providing a paste comprising aluminum, glass frit and a separate and distinct amount of at least one metal that includes cobalt, strontium and/or vanadium; (c) applying the paste to the silicon wafer substrate to form a coated substrate; and (d) firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and the metal.    USE - The method is useful for reducing bow or improving electrical performance of aluminum back contacted silicon solar cell (claimed).    ADVANTAGE - The method utilizes the paste, hence provides the solar cell contact, which is reliable and exhibits improved cell electrical performance.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a method (II) for at least one of reducing bow or improving the electrical performance of the aluminum back contacted silicon solar cell, comprising: the step (a) as above per se; applying to the substrate a paste comprising aluminum and an organometallic compound and glass frit; and the step (d) as above per se, where the organometallic compound is 1-30C organometallic compound of the metal, so that, together with the aluminum, the glass fit and organometallic compound forms the paste having an exothermic reaction peak at a temperature of at least 300 degrees C to less than 660 degrees C, with a sample size of 5-200 mg, when run on a TA Instruments SDT Q600 (RTM: Thermogravimetric analyzer), when measured with differential scanning calorimetry analysis at a heating rate of 20 degrees C per minute in air; applying the paste to the silicon wafer substrate to form a coated substrate; and firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and organometallic compound; (2) a solar cell including a contact made by the method (I); (3) aluminum paste comprising aluminum and at least one compound of the metal (cobalt, strontium and/or vanadium); and (4) a method (III) for improving the electrical performance of the aluminum back contacted silicon solar cell, comprising: the steps (a) and (b) as above per se, where the paste comprises aluminum, glass frit and a separate and distinct amount of a component that supplies at least one of cobalt, strontium and/or vanadium; selecting a sufficient amount of the component so that the paste provides an exothermic reaction peak, when measured with differential thermal analysis at a heating rate of 20 degrees C per minute in air, at a temperature of at least 660 degrees c to less than 900 degrees C, with a sample size of 5-200 mg when run on the TA Instruments SDT Q600 (RTM: Thermogravimetric analyzer); the step (c) as above per se; and firing the coated substrate for a time and at a temperature sufficient to sinter the aluminum and fuse the glass frit and inorganic oxide.