NOVELTY - A solar cell forming method involves utilizing a doped silicon substrate followed by depositing ink on a rear surface of the substrate in a pattern. The substrate is heated in baking ambient to remove residual solvent from the deposited ink. The substrate is heated in diffusion ambient to diffuse p-type dopant on a rear surface of the substrate to form a rear p+ diffusion area (313) on the rear surface of the substrate. The resultant substrate is exposed to a phosphorus deposition ambient to form a front phosphor silicate glass (PSG) layer and a front phosphorus diffusion layer.    USE - Method for forming a solar cell.    ADVANTAGE - The method enables forming the solar cell with localized back surface field, high efficiency and enhanced reflection in an inexpensive and efficient manner.    DETAILED DESCRIPTION - A solar cell forming method involves utilizing a doped silicon substrate followed by depositing ink on a rear surface of the substrate in a pattern. The substrate is heated in a baking ambient to remove residual solvent from the deposited ink. The substrate is heated in diffusion ambient to diffuse p-type dopant on a rear surface of the substrate to form a rear p+ diffusion area on the rear surface of the substrate. The resultant substrate is exposed to a phosphorus deposition ambient to form a front phosphor silicate glass (PSG) layer and a front phosphorus diffusion layer on the front surface of the substrate. The resultant substrate is exposed to an etchant to remove the front PSG layer substantially, followed by depositing a front anti-reflective layer on the front surface of the substrate and a rear passivation layer (314) on the rear surface of the substrate, forming a front metal electrode (322) on the front surface in ohmic contact with the front phosphorus diffusion layer through the front anti -reflective layer and a rear metal electrode (316) on the rear surface through the rear passivation layer. The rear metal electrode is formed on the rear p+ diffusion area on the rear surface of the substrate, where the ink comprises a p-type dopant and a solvent. An INDEPENDENT CLAIM is also included for a solar cell.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a solar cell.    P-type silicon substrate (310)    N+ region (312)    Rear p+ diffusion area (313)    Rear passivation layer (314)    Rear metal electrode (316)    Front metal electrode (322)