A solar cell and a method of manufacturing the same are discussed. The method of manufacturing the solar cell includes forming a dopant layer on one surface of a semiconductor substrate, selectively etching at least a portion of the dopant layer positioned in a first area of the semiconductor substrate, performing a thermal processing operation on the semiconductor substrate to form a conductive region, removing the dopant layer remaining in the one surface of the semiconductor substrate, forming first electrodes on a second area of the semiconductor substrate, and forming second electrodes on a surface opposite the one surface of the semiconductor substrate. In the thermal processing operation, a lightly doped region is formed in the first area, and a heavily doped region is formed in the second area.