KETEP 세계에너지시장정보

A solar cell, comprising: a semiconductor substrate (10), wherein a rear surface of the semiconductor substrate (10) has a first texture structure (12), the first texture structure (12) has a non-pyramid-shaped microstructure and includes two or more first substructures (121) at least partially stacked on one another, and in a direction away from the rear surface and perpendicular to the rear surface, a distance between a top surface of an outermost first substructure (121) and a top surface of an adjacent first substructure (121) is less than or equal to 2 µm, and a one-dimensional size of the top surface of the outermost first substructure (121) is less than or equal to 45 µm, wherein the top surface of the first substructure (121) has a polygonal shape; a first passivation layer (20) located on a front surface of the semiconductor substrate (10), wherein the front surface of the semiconductor substrate (10) has a second texture structure (11), the second texture structure (11) has a pyramid-shaped microstructure, a doped layer is formed on the second texture structure (11), and the first passivation layer (20) is formed on the doped layer; a tunnel oxide layer (30) located on the first texture structure (12) of the rear surface of the semiconductor substrate (10); a doped conductive layer (40) located on a surface of the tunnel oxide layer (30), a conductivity type of doping elements of the doped conductive layer (40) being same as that of the semiconductor substrate (10); and a second passivation layer (50) located on a surface of the doped conductive layer (40).