SOLAR CELL AND MANUFACTURING METHOD THEREOF, PHOTOVOLTAIC MODULE, AND PHOTOVOLTAIC SYSTEM

    公开(公告)号:US20240363776A1

    公开(公告)日:2024-10-31

    申请号:US18768660

    申请日:2024-07-10

    摘要: A solar cell and a manufacturing method thereof, a photovoltaic module, and a photovoltaic system. The manufacturing method includes: providing a substrate; and dividing a second surface of the substrate into a first region, a second region, and an isolation region; sequentially stacking a first tunnel oxide layer, a first intrinsic amorphous silicon layer, a second tunnel oxide layer, and a second intrinsic amorphous silicon layer on the second surface of the substrate; removing the second intrinsic amorphous silicon layer and the second tunnel oxide layer located in the second region; doping the first intrinsic amorphous silicon layer and the second intrinsic amorphous silicon layer located in the first region with a first element, to obtain a first doped layer and a second doped layer respectively; doping the first intrinsic amorphous silicon layer located in the second region with a second element, to obtain a third doped layer; and forming an isolation structure in the isolation region, to isolate the first tunnel oxide layer located in the first region from the first tunnel oxide layer located in the second region and isolate the first doped layer and the second doped layer located in the first region from the third doped layer located in the second region.

    SOLAR CELL, PHOTOVOLTAIC MODULE, AND PHOTOVOLTAIC SYSTEM

    公开(公告)号:US20240363771A1

    公开(公告)日:2024-10-31

    申请号:US18767403

    申请日:2024-07-09

    摘要: A solar cell includes a semiconducting substrate, a first emitter, and a second emitter. The semiconducting substrate includes first and second surfaces. The semiconducting substrate includes first and second regions. The first direction is perpendicular to the thickness direction of the semiconducting substrate. The first emitter is in a first conductivity type. The first emitter is disposed on the first surface and including a groove. The groove divides the first emitter into a first sub-emitter and a second sub-emitter. The first sub-emitter is located on the first region. The second sub-emitter is located on the second region. The second emitter is in a second conductivity type, and the second emitter is disposed on the first surface and located on the second region. The minimum distance between the second emitter and the second surface is less than the minimum distance between the first emitter and the second surface.

    FILM PREPARATION METHOD, SOLAR CELL, PHOTOVOLTAIC DEVICE, AND PHOTOVOLTAIC SYSTEM

    公开(公告)号:US20240347667A1

    公开(公告)日:2024-10-17

    申请号:US18369946

    申请日:2023-09-19

    IPC分类号: H01L31/18 H01L31/0216

    CPC分类号: H01L31/18 H01L31/02167

    摘要: The present application provides a film preparation method, a solar cell, a photovoltaic device, and a photovoltaic system. The film preparation method includes forming a first passivation layer on a first surface of a substrate by using a first preparation technique; and forming a second passivation layer on a surface of the first passivation layer away from the substrate by using a second preparation technique, a material of the second passivation layer is the same as that of the first passivation layer; wherein a passivation layer forming speed of the first preparation technique is lower than that of the second preparation technique, and a passivation effect of the first passivation layer is better than that of the second passivation layer.

    GRID LINE STRUCTURE WITH ANTI-BREAKAGE GLUING INTERCONNECTION, A SOLAR BATTERY AND A GLUING METHOD

    公开(公告)号:US20240234597A9

    公开(公告)日:2024-07-11

    申请号:US18492245

    申请日:2023-10-23

    IPC分类号: H01L31/0224

    CPC分类号: H01L31/022433

    摘要: The present disclosure provides a grid line structure with anti-breakage gluing interconnection, a solar battery and a gluing method. The grid line structure comprises: a plurality of fingers, the plurality of fingers extending along a first direction and arranged at intervals along a second direction; a plurality of gluing points, an adhesive applied on at least part of the plurality of gluing points is an insulating glue to form a plurality of insulating gluing points, each insulating gluing point is located between two adjacent fingers, and at least part of the plurality of insulating gluing points are located on the same straight line in the second direction to form a plurality of insulating gluing lines; the plurality of insulating gluing lines include a first insulating gluing line and a second insulating gluing line; wherein, the grid line structure has a busbar and/or the second insulating gluing line at a position adjacent to the first insulating gluing line in the first direction, and the plurality of insulating gluing points in the second insulating gluing line and the plurality of insulating gluing points in the first insulating gluing line are staggered from each other in the first direction. The grid line structure can solve the problem of transmission interruption caused by overflow of insulating glue in batteries without busbar or with busbar, which improves the stability and reliability of solar batteries.

    METHOD FOR MANUFACTURING SOLAR CELL
    6.
    发明公开

    公开(公告)号:US20240063324A1

    公开(公告)日:2024-02-22

    申请号:US18386544

    申请日:2023-11-02

    IPC分类号: H01L31/18 H01L31/0236

    摘要: The present application relates to a method for manufacturing a solar cell. In the method, a wafer including a substrate and a doped conducting material layer is provided. A first surface and a portion of a first side surface of the substrate include a textured structure. The doped conducting material layer covers the textured structure. A passivating contact material layer is formed on each surface of the wafer. The wafer formed with the passivating contact material layer is cut along the thickness direction of the substrate to form a sub-wafer, so as to form a doped conducting layer. The passivating contact material layer is etched to form a passivating contact layer. A first passivation layer is formed on the doped conducting layer, and further covers at least a portion of a cut edge side surface which is a side surface of the sub-wafer formed by cutting the wafer.

    SOLAR CELL, PREPARATION METHOD THEREOF AND PHOTOVOLTAIC MODULE

    公开(公告)号:US20240355941A1

    公开(公告)日:2024-10-24

    申请号:US18757722

    申请日:2024-06-28

    摘要: A solar cell, a preparation method thereof, and a photovoltaic module. The solar cell includes a semiconductor substrate, a first substrate doped layer, a second substrate doped layer, a first passivation layer, and a first doped semiconductor layer. The semiconductor substrate includes a first surface, and the first surface includes a first region and a second region adjacent to the first region along a first direction. The first substrate doped layer is located in the first region. The second substrate doped layer is located in the second region, and the first substrate doped layer is connected to the second substrate doped layer. The first passivation layer is located on a side of the second substrate doped layer away from the semiconductor substrate. The first doped semiconductor layer is located on a side of the first passivation layer away from the semiconductor substrate.