Abstract:
A method of manufacturing a solar cell includes forming jagged portions non-uniformly on a surface of a substrate, forming a first type semiconductor and a second type semiconductor in the substrate, forming a first electrode to contact the first type semiconductor, and forming a second electrode to contact the second type semiconductor. An etchant used in a wet etching process in manufacturing the solar cell includes about 0.5 wt % to 10 wt % of HF, about 30 wt % to 60 wt % of HNO3, and up to about 30 wt % of acetic acid based on total weight of the etchant.
Abstract:
A solar cell and a solar cell module including the solar cells are disclosed. The solar cell includes a substrate of a first conductive type; an emitter layer of a second conductive type positioned at a light receiving surface of the substrate; a plurality of first electrodes that are positioned on the emitter layer and are electrically connected to the emitter layer; and at least one first current collector that is positioned on the emitter layer in a direction crossing the plurality of first electrodes, wherein a thickness of each of the plurality of first electrodes is different from a thickness of the at least one first current collector, and a difference of the thickness of the each first electrode to the thickness of the at least one current collector is equal to or less than about 0.5 times the thickness of the at least one first current collector.
Abstract:
A solar cell and a method for manufacturing the same are disclosed. The method for manufacturing the solar cell includes forming an emitter region of a second conductive type opposite a first conductive type at a first surface of a substrate of the first conductive type by using an ion implantation method, forming a passivation layer on a second surface positioned opposite the first surface of the substrate, and forming a first electrode, which is positioned on the first surface of the substrate and is connected to the emitter region, and a second electrode, which is positioned on the second surface of the substrate and is selectively connected to the substrate through the passivation layer.
Abstract:
A solar cell includes a first conductivity type substrate; an emitter unit having a second conductivity type opposite to the first conductivity type, and forming a p-n junction with the substrate; an anti-reflective film positioned on the emitter unit; a plurality of first electrodes positioned on the anti-reflective film and connected with the emitter unit; and a second electrode connected with the substrate, wherein the emitter unit includes a first region and a second region that are positioned between an outermost first electrode among the plurality of first electrodes and the edge of the substrate, and a thickness of the first region gradually increases in going from the edge of the substrate to the outermost first electrode, and a thickness of the second region is uniform.
Abstract:
A solar cell and a method for manufacturing the same are disclosed. The solar cell includes a first conductive type substrate, an emitter layer of a second conductive type opposite the first conductive type, the emitter layer and the substrate forming a p-n junction, a plurality of first electrodes electrically connected to the emitter layer, and a second electrode electrically connected to the substrate. At least one of the plurality of first electrodes includes a first electrode layer, a plurality of first electrode auxiliaries separated from the first electrode layer, and a second electrode layer positioned on an upper surface and a lateral surface of the first electrode layer and on an upper surface and a lateral surface of each of the plurality of first electrode auxiliaries.
Abstract:
A solar cell and a solar cell module including the solar cells are disclosed. The solar cell includes a substrate of a first conductive type; an emitter layer of a second conductive type positioned at a light receiving surface of the substrate; a plurality of first electrodes that are positioned on the emitter layer and are electrically connected to the emitter layer; and at least one first current collector that is positioned on the emitter layer in a direction crossing the plurality of first electrodes, wherein a thickness of each of the plurality of first electrodes is different from a thickness of the at least one first current collector, and a difference of the thickness of the each first electrode to the thickness of the at least one current collector is equal to or less than about 0.5 times the thickness of the at least one first current collector.