NOVELTY - Doping impurities comprises: forming a diffusion protective pattern on a substrate that contains first area and second area; doping a first dopant in the first area by using a first mask to form a first doped pattern; and doping a second dopant in the second area by using a second mask to form a second doped pattern, where the diffusion protective pattern has at least one opening that corresponds to the first area or the second area.    USE - The method is useful for doping impurities and manufacturing solar cells (claimed).    ADVANTAGE - The method provides doping of first dopant and the second dopant in first and second area by using first mask and second mask, without creating a short circuit (prevented by diffusion protective pattern) between the first doped pattern and the second doped pattern, hence decreases the manufacturing cost and processing time, and yields a high-efficiency solar cell.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (1) manufacturing a solar cell, comprising: forming a diffusion protective pattern having a first thickness on a substrate (210) having a first area (A1) and a second area (A2); doping the first and second dopant; removing the diffusion protective pattern after the first doped pattern (DP1) and second doped pattern (DP2) are formed; and forming a first metal pattern electrically connected to the first doped pattern and a second metal pattern electrically connected to the second doped pattern on a first surface of the substrate, where the first metal pattern and the second metal pattern are spaced apart from each other; and    (2) a solar cell comprising: a substrate having a first doped pattern formed on a first surface of the substrate and doped with a first dopant, a second doped pattern formed on the first surface of the substrate and doped with a second dopant, the first low density pattern, and the second low density pattern; the first metal pattern; and the second metal pattern.    DESCRIPTION OF DRAWING(S) - The figure illustrates method of manufacturing the solar cell.    Substrate (210)    First area (A1)    Second area (A2)    First doped pattern (DP1)    Second doped pattern (DP2)