NOVELTY - Manufacturing solar cell involves preparing substrate; forming first conductive layer on substrate; forming semiconductor layer on first conductive layer; forming first mask pattern over semiconductor layer; patterning semiconductor layer to form preliminary semiconductor pattern, removing first conductive layer from cell isolation area (C1, C2); etching first mask pattern to form second mask pattern with second openings; patterning preliminary semiconductor pattern; and forming upper electrodes connected with bottom electrodes (201, 205, 208) on semiconductor pattern.    USE - To manufacture solar cell; and for converting optical energy into electrical energy in the electronic devices.    ADVANTAGE - The method provides easy manufacturing process of solar cell which has improved reliability, in which semiconductor pattern, bottom electrodes and top electrodes can be easily patterned through etching process by using etch masks in sequence of first mask pattern.    DETAILED DESCRIPTION - Manufacturing solar cell involves preparing substrate having several cell areas and cell isolation area between two adjacent cell areas; forming first conductive layer on substrate; forming semiconductor layer on first conductive layer; forming first mask pattern over semiconductor layer, where first mask pattern includes at least one first opening corresponding to cell isolation area; patterning semiconductor layer using first mask pattern to form preliminary semiconductor pattern, and removing first conductive layer from cell isolation area (C1, C2) by using first mask pattern to form bottom electrodes in cell areas; etching first mask pattern to form second mask pattern having second openings; patterning preliminary semiconductor pattern using second mask pattern to form semiconductor pattern and to expose bottom electrodes at locations corresponding to second openings; and forming upper electrodes electrically connected with exposed bottom electrodes (201, 205, 208) on semiconductor pattern. An INDEPENDENT CLAIM is included for the solar cell comprising substrate, bottom electrode, and semiconductor patterns.    DESCRIPTION OF DRAWING(S) - The figure shows plan view of photoelectric device.    Electrodes (201, 205, 208)    Photoelectric device (500)    First and second cell areas (C1, C2)    First and second contact holes (CH1, CH2)