Abstract: A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide has a layered crystal structure of space group R3m, includes the nickel (Ni) in an amount of 60 mol % or less based on a total amount of transition metals, includes the cobalt (Co) in an amount greater than an amount of the manganese (Mn), and is composed of single particles.

Abstract: A solar cell and a method of fabricating the same are provided according to one or more embodiments. According to an embodiment, the solar cell includes a substrate, a back electrode layer formed on the substrate, a light absorbing layer formed on the back electrode layer, and a transparent electrode layer formed on the light absorbing layer, wherein the light absorbing layer is comprised of copper (Cu), gallium (Ga), indium (In), sulfur (S), and selenium (Se) and includes a first concentration region in which concentrations of sulfur (S) gradually decrease in the light absorbing layer going in a first direction from the back electrode layer to the transparent electrode layer.

Abstract: A method of manufacturing a solar cell having increased light efficiency due to increased gallium distribution on a surface of a light absorption layer, the method including forming a first electrode on a substrate, forming a precursor that includes at least one of copper, gallium, and indium on the first electrode, forming a preliminary light absorption layer by providing selenium to the precursor, forming the preliminary light absorption layer further including performing a heat treatment, and forming a liquid state CuSe compound, forming a light absorption layer by providing a compound including at least one of gallium and indium to the preliminary light absorption layer, and forming a second electrode on the light absorption layer.

Abstract: A solar cell module is provided. The solar cell module includes: a substrate; a plurality of unit cells including a first electrode, a semiconductor layer, and a second electrode that are sequentially deposited on the substrate; a first sub-module and a second sub-module having the unit cells, respectively; a first longitudinal pattern dividing the unit cells of the first sub-module, and a second longitudinal pattern dividing the unit cells of the second sub-module; a transverse pattern dividing the first sub-module and the second sub-module; and an insulating portion disposed near the transverse pattern, and insulating between the first sub-module and the second sub-module, wherein the unit cells of the first sub-module are connected in series through the first longitudinal pattern, the unit cells of the second sub-module are connected in series through the second longitudinal pattern, and the first sub-module and the second sub-module are connected in series through the transverse pattern.

Abstract: A solar cell manufacturing method includes forming a first electrode on a substrate, forming a mixed metal layer on the first electrode, forming a light absorbing layer by injecting hydrogen selenide on the entire surface of the mixed metal layer using a gas injection device, and forming a second electrode on the light absorbing layer. Further, the gas injection device includes a gas pipeline, an inner gas pipe positioned in the gas pipeline and having an opening, and a plurality of injection nozzles disposed below the gas pipeline.

Abstract: A solar cell module is provided. The solar cell module includes: a substrate; a plurality of unit cells including a first electrode, a semiconductor layer, and a second electrode that are sequentially deposited on the substrate; a first sub-module and a second sub-module having the unit cells, respectively; a first longitudinal pattern dividing the unit cells of the first sub-module, and a second longitudinal pattern dividing the unit cells of the second sub-module; a transverse pattern dividing the first sub-module and the second sub-module; and an insulating portion disposed near the transverse pattern, and insulating between the first sub-module and the second sub-module, wherein the unit cells of the first sub-module are connected in series through the first longitudinal pattern, the unit cells of the second sub-module are connected in series through the second longitudinal pattern, and the first sub-module and the second sub-module are connected in series through the transverse pattern.

Abstract: A solar cell manufacturing method includes forming a first electrode on a substrate, forming a mixed metal layer on the first electrode, forming a light absorbing layer by injecting hydrogen selenide on the entire surface of the mixed metal layer using a gas injection device, and forming a second electrode on the light absorbing layer. Further, the gas injection device includes a gas pipeline, an inner gas pipe positioned in the gas pipeline and having an opening, and a plurality of injection nozzles disposed below the gas pipeline.

Abstract: A sputtering device, including a chamber providing a reaction space, a sputter unit including a target disposed in the chamber, and a conveying unit including a plurality of rollers for supporting a substrate and for conveying the substrate relative to the target along a first direction, the conveying unit including fixed roller units having a predetermined diameter, and a variable roller unit having a diameter that changes in a second direction at both ends thereof, the second direction being orthogonal to the first direction.

Abstract: A solar cell manufacturing method includes forming a first electrode on a substrate, forming a mixed metal layer on the first electrode, forming a light absorbing layer by injecting hydrogen selenide on the entire surface of the mixed metal layer using a gas injection device, and forming a second electrode on the light absorbing layer. Further, the gas injection device includes a gas pipeline, an inner gas pipe positioned in the gas pipeline and having an opening, and a plurality of injection nozzles disposed below the gas pipeline.

Abstract: A method of manufacturing a solar cell is presented. The manufacturing method of a solar cell may include: forming a first electrode on a substrate; forming a precursor that includes copper, gallium, and indium on a first electrode, forming a preliminary light absorption layer by providing selenium Se to the precursor, forming a light absorption layer by providing a compound including at least one of gallium and indium to the preliminary light absorption layer, and forming a second electrode on the light absorption layer.

Abstract: Provided are a solar cell and a method of fabricating the same. The solar cell includes: a substrate; a rear electrode layer which is formed on the substrate and includes molybdenum (Mo); a protective layer which is formed on the rear electrode layer and includes silicon (Si); a light-absorbing layer which is formed on the protective layer and includes selenium (Se) and at least one of copper (Cu), gallium (Ga), and indium (In); and a transparent electrode layer formed on the light-absorbing layer.

Abstract: A solar cell module is provided. The solar cell module includes: a substrate; a plurality of unit cells including a first electrode, a semiconductor layer, and a second electrode that are sequentially deposited on the substrate; a first sub-module and a second sub-module having the unit cells, respectively; a first longitudinal pattern dividing the unit cells of the first sub-module, and a second longitudinal pattern dividing the unit cells of the second sub-module; a transverse pattern dividing the first sub-module and the second sub-module; and an insulating portion disposed near the transverse pattern, and insulating between the first sub-module and the second sub-module, wherein the unit cells of the first sub-module are connected in series through the first longitudinal pattern, the unit cells of the second sub-module are connected in series through the second longitudinal pattern, and the first sub-module and the second sub-module are connected in series through the transverse pattern.

Abstract: A solar cell and a method of fabricating the same are provided according to one or more embodiments. According to an embodiment, the solar cell includes a substrate, a back electrode layer formed on the substrate, a light absorbing layer formed on the back electrode layer, and a transparent electrode layer formed on the light absorbing layer, wherein the light absorbing layer is comprised of copper (Cu), gallium (Ga), indium (In), sulfur (S), and selenium (Se) and includes a first concentration region in which concentrations of sulfur (S) gradually decrease in the light absorbing layer going in a first direction from the back electrode layer to the transparent electrode layer.