Abstract: The present disclosure provides a solar cell and a method for producing same. The solar cell includes: a substrate; a first passivation film, an anti-reflection layer and at least one first electrode formed on a front surface of the substrate; and a tunneling layer, a field passivation layer and at least one second electrode formed on a rear surface. The field passivation layer includes a first field passivation sub-layer and a second field passivation sub-layer; a conductivity of the first field passivation sub-layer is greater than a conductivity of the second field passivation sub-layer, and a thickness of the second field passivation sub-layer is smaller than a thickness of the first field passivation sub-layer; either the at least one first electrode or the at least one second electrode includes a silver electrode, a conductive adhesive and an electrode film that are sequentially formed in a direction away from the substrate.

Abstract: The present disclosure provides a functional part, a photovoltaic module and a method of manufacturing photovoltaic modules. The functional part is configured to form a photovoltaic module with a cell string that includes a plurality of cells. Adjacent cells of share an overlapped region. The functional part has a first surface facing the cell string and a second surface opposite to the first surface. The functional part includes at least one groove extending from the first surface toward the second surface. A location of each groove corresponds to a location of at least one overlapped region.

Abstract: Provided is a composite encapsulating material and a photovoltaic module encapsulated with the composite encapsulating material, which relate to the technical field of photovoltaic modules. At least a partial area of the composite encapsulating material includes a high insulation material, and the high insulation material includes polyimide, modifier and modified polyimide. The above technical solution can improve an insulation performance of the encapsulating material, reduce a blank area of an edge of the module, reduce a weight of the photovoltaic module, and further reduce comprehensive cost of the photovoltaic module.

Abstract: Provided is a solar cell. The solar cell may include a semiconductor layer and a passivation film stack provided on a back surface of the semiconductor layer. The passivation film stack may include a first passivation layer provided on the back surface of the semiconductor layer and including a silicon-rich layer with a silicon atom concentration ranging from 5×1021/cm3 to 2.5×1022/cm3; a second passivation layer provided on a surface of the first passivation layer and including an oxygen-rich and nitrogen-rich layer; and a third passivation layer provided on a surface of the second passivation layer and including at least one silicon nitride film with a gradient-varied refractive index. A first refractive index of the first passivation layer may be greater than a second refractive index of the second passivation layer and smaller than a third refractive index of the third passivation layer.

Abstract: Provided is an apparatus and a method for continuous crystal pulling. The apparatus includes: a crucible including a first sub-crucible and a second sub-crucible located at inner side of the first sub-crucible; a draft tube located above the crucible; and a delivery duct supplying materials to the crucible. A ratio of inner diameter of the second sub-crucible to outer diameter of the draft tube is ?1.05. In a first state, a distance between bottom surface of the draft tube and bottom surface of the crucible is a first distance, in a second state, a distance between bottom surface of the draft tube and bottom surface of the crucible is a second distance. The first distance is greater than the second distance. In the first and second states, a distance between a crystal-liquid interface in the crucible and the bottom surface of the draft tube remains substantially unchanged.

Abstract: Embodiments of the present disclosure provide a solar cell and a solar cell module. The solar cell includes a first region and a second region, and further includes a substrate having a first surface and a second surface; a tunneling layer covering the second surface; a first emitter disposed on part of the tunneling layer in the first region; and a second emitter disposed on part of the tunneling layer in the second region and on the first emitter, a conductivity type of the second emitter being different from a conductivity type of the first emitter. The solar cell further includes a first electrode disposed in the first region and configured to electrically connect with the first emitter by penetrating through the second emitter; and a second electrode disposed in the second region and configured to electrically connect with the second emitter.

Abstract: The present disclosure provides a solar cell and a method for producing same. The solar cell includes: a substrate; a first passivation film, an anti-reflection layer and at least one first electrode formed on a front surface of the substrate; and a tunneling layer, a field passivation layer and at least one second electrode formed on a rear surface. The field passivation layer includes a first field passivation sub-layer and a second field passivation sub-layer; a conductivity of the first field passivation sub-layer is greater than a conductivity of the second field passivation sub-layer, and a thickness of the second field passivation sub-layer is smaller than a thickness of the first field passivation sub-layer; either the at least one first electrode or the at least one second electrode includes a silver electrode, a conductive adhesive and an electrode film that are sequentially formed in a direction away from the substrate.

Abstract: The present disclosure provides a back-contact solar cell and a solar cell module. The back-contact solar cell includes: a substrate including a light-receiving surface and a back surface opposite to the light-receiving surface, wherein the substrate includes a center region and connecting regions on opposite sides of the center region; positive electrodes and negative electrodes disposed on the back surface of the substrate; auxiliary positive electrodes, disposed on one or both of the light-receiving surface and a side surface of each of the connecting regions, and configured to be electrically coupled to the plurality of positive electrodes; and auxiliary negative electrodes, disposed on one or both of the light-receiving surface and the side surface of each of the connecting regions, and configured to be electrically coupled to the plurality of negative electrodes.

Abstract: Provided is a solar cell and a method for manufacturing the same, the method includes: forming a doped layer on a surface of a semiconductor substrate, the doped layer having a first doping concentration of a doping element in the doped layer; depositing, on a surface of the doped layer, a doped amorphous silicon layer including the doping element; selectively removing at least one region of the doped amorphous silicon layer; performing annealing treatment, for the semiconductor substrate to form a lightly doped region having the first doping concentration and a heavily doped region having a second doping concentration in the doped layer, the second doping concentration is greater than the first doping concentration; and forming a solar cell by post-processing the annealed semiconductor substrate. The solar cell and the method for manufacturing the same simplify the manufacturing process and improve conversion efficiency of the solar cell.

Abstract: Provided is a method for passivating a silicon-based semiconductor device and a silicon-based semiconductor device. The method includes the following steps: cutting, by using a cutting process, a preset region of the silicon-based semiconductor device, to form a first surface associated with the preset region; smoothing the first surface to adjust a surface appearance of the first surface, so that a height difference between a protrusion and a recess of a non-marginal region on the first surface is less than 20 nm; and passivating the smoothed first surface to form a first passivation layer on the first surface. The present application can reduce or avoid the problem of efficiency reduction caused by cutting a silicon-based semiconductor device and help to obtain a more efficient silicon-based semiconductor device.

Abstract: Provided is a solar cell, a shingled photovoltaic module, and a method for manufacturing solar cell, the solar cell includes a body portion, a first extending portion and a second extending portion provided at two ends of the body portion; a thickness of the body portion is greater than a thickness of the first extending portion and a thickness of the second extending portion. In the shingled photovoltaic module, adjacent solar cells can be electrically connected through the first extending portion and the second extending portion, and the adjacent solar cells do not need to be stacked in a thickness direction to achieve electrical connection, so that space in the thickness direction occupied by the stacked solar cells is reduced, and light-receiving area of the solar cell is not decreased, thereby improving photoelectric conversion efficiency of the solar cell, reducing the number of solar cells required, and saving cost.

Abstract: The present disclosure provide a solar cell, including: a substrate, an interface passivation layer covering a rear surface of the substrate, and an electrode disposed at a side of the interface passivation layer facing away from the substrate, the interface passivation layer including a first interface passivation sub-layer corresponding to a portion of the interface passivation layer between adjacent electrodes, and a second interface passivation sub-layer corresponding to a portion of the interface passivation layer where disposed between the substrate and the electrode; a field passivation layer, at least partially disposed between the interface passivation layer and the electrode; and a conductive enhancement layer, at least partially disposed at a side of the first interface passivation sub-layer away from the substrate to enable carriers in the first interface passivation sub-layer to flow to the electrode, where a resistivity of the conductive enhancement layer is smaller than a resistivity of the fie

Abstract: A solar cell is provided. The solar cell at least includes a semiconductor layer and a plurality of passivation layers provided on a back surface of the semiconductor layer. The passivation layers include a first silicon oxynitride film layer having a first refractive index, a second silicon oxynitride film layer having a second refractive index and provided on a surface of the first silicon oxynitride film layer, and a silicon nitride film layer having a third refractive index and provided on a surface of the second silicon oxynitride film layer.

Abstract: Provided is a solar cell. The solar cell may include a semiconductor layer and a passivation film stack provided on a back surface of the semiconductor layer. The passivation film stack may include a first passivation layer provided on the back surface of the semiconductor layer and including a silicon-rich layer with a silicon atom concentration ranging from 5×1021/cm3 to 2.5×1022/cm3; a second passivation layer provided on a surface of the first passivation layer and including an oxygen-rich and nitrogen-rich layer; and a third passivation layer provided on a surface of the second passivation layer and including at least one silicon nitride film with a gradient-varied refractive index. A first refractive index of the first passivation layer may be greater than a second refractive index of the second passivation layer and smaller than a third refractive index of the third passivation layer.