Abstract: The present application discloses implementations relating to a tandem solar cell, a manufacturing method of a tandem solar cell, and a photovoltaic module. In an implementation, a tandem solar cell includes a bottom solar cell, a cadmium telluride top solar cell, an N-type transparent conductive layer, and a P-type transparent conductive layer. The cadmium telluride top solar cell is connected in series with the bottom solar cell, and a material of a back contact layer included in the cadmium telluride top solar cell includes at least one of copper-doped zinc telluride, copper-doped magnesium telluride, or copper-doped zinc nitride. The N-type transparent conductive layer and the P-type transparent conductive layer are sequentially stacked between the bottom solar cell and the cadmium telluride top solar cell along a direction from the bottom solar cell to the cadmium telluride top solar cell.

Abstract: A solar cell and a manufacturing method are provided. In one example, a solar cell includes: a semiconductor substrate including a first surface having a plurality of first texture structures, where a first texture structure includes a side surface and a top surface; a tunneling layer, located on the first surface of the semiconductor substrate; a doped semiconductor layer, located on a surface of the tunneling layer away from the semiconductor substrate; an electrode, located on a surface of the doped semiconductor layer away from the semiconductor substrate and in contact with the doped semiconductor layer; and metal crystals distributed in the doped semiconductor layer at a position in contact with the electrode. A distribution density of the metal crystals in the doped semiconductor layer located on the top surface is greater than that in the doped semiconductor layer located on the side surface.

Abstract: The present disclosure provides a method for preparing a solar cell, a solar cell, and a solar cell module. An example solar cell includes a solar cell body, a first conductive pattern and a second conductive pattern sequentially laminated on the solar cell body, and electrically connected through one of welding, eutectic bonding, a conductive adhesive pattern between the first and the second conductive patterns, or a third conductive pattern between the first and the second conductive patterns. The conductive adhesive pattern comprises a conductive material and an adhesive. The third conductive pattern includes a first part close to the first conductive pattern, a second part close to the second conductive pattern, and a middle part between the first and the second parts. A grain size of the third conductive pattern increases from the first part to the middle part and increases from the second part to the middle part.

Abstract: The present disclosure provides a flexible solar battery component, which includes a plurality of cell chips. A conductive lead wire is provided at a top surface of each cell chip. A contact electrode is provided at an edge of a side of the top surface of each cell chip. A metal base is provided at a bottom surface of each cell chip. One end of the conductive lead wire of each cell chip is coupled with the contact electrode of each cell chip, and the other end of the conductive lead wire of each cell chip is in an electrical connection with the metal base of each cell chip. In every two adjacent cell chips, the metal base of one of the two adjacent cell chips is pressure-welded to the contact electrode of the other of the two adjacent cell chips.

Abstract: A wiring machine includes a lever group and magnets. The lever group includes a plurality of lever arms which are spaced apart and a plurality of rotary shafts on each of which one lever arm is mounted correspondingly so as to facilitate the rotate rocking motion of the lever arms. One end of each lever arm is provided with a wire gripper and the other end is provided with an attraction head. The magnets are arranged in association with the plurality of attraction heads.

Abstract: This disclosure provides a method for preparing a CIGS thin film solar cell, including placing a substrate formed with a barrier layer into a sputtering chamber, and forming a doping layer on the barrier layer by sputtering, wherein the doping layer is sodium doped a hetero-molybdenum layer; detecting sodium ion content, and introducing water vapor into the sputtering chamber according to the sodium ion content when the doping layer is formed by sputtering. The method for preparing the CIGS thin film solar cell of the present disclosure introduces water vapor into the sputtering chamber according to the content of sodium ions. The water vapor may ensure the stability after sodium ion sputtering, and the content of water vapor is adjusted according to the sodium ion content.

Abstract: The present disclosure relates to a laminated film and a method for manufacturing the laminated film. The method includes: depositing a first film layer on a substrate; forming a porous force-release contact layer on the first film layer; and forming a second film layer on the force-release contact layer, wherein the first film layer is a metal layer and the second film layer is a semiconductor layer, or the first film layer is a semiconductor layer and the second film layer is a metal layer.

Abstract: The present disclosure discloses a thread tension adjusting device comprising a body, a tension rod, an elastic element and an adjusting knob. A thread passing eye for inputting a thread is arranged below the body. A tension wheel and a thread passing wheel are rotatably arranged on the body. An adjusting knob is used for adjusting a rotational speed of the tension wheel. The elastic element has one end connected to the body and another end connected to the tension rod. The thread tension adjusting device may ensure stability of tensioning and transmitting of the thread by cooperation between the tension rod and the tension wheel, and improve precision for thread tension adjusting by the adjusting knob. In addition, the thread tension adjusting device may monitor thread breakage by the tension detector, and ensure operating stability and safety of the thread tension adjusting device.

Abstract: This application provides a solar cell, a cutting method and a cutting device for the solar cell, the cutting method for the solar cell includes: cutting a continuous thin-film solar cell on a substrate into at least one intermediate transition cell with a preset size; carrying out integrated lamination on one of the intermediate transition cells, a packaging material and a metal wire to form a transition laminated cell; cutting the transition laminated cell into a plurality of single-piece cells, and cutting edge angles of the single-piece cells to form fillets.