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    BACK CONTACT SOLAR CELL AND PRODUCTION METHOD, AND BACK CONTACT BATTERY ASSEMBLY
    2.
    发明公开
    BACK CONTACT SOLAR CELL AND PRODUCTION METHOD, AND BACK CONTACT BATTERY ASSEMBLY 审中-公开

    公开(公告)号：US20230238463A1

    公开(公告)日：2023-07-27

    申请号：US18001821

    申请日：2020-12-10

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Zhao WU ,  Chen XU ,  Zifeng LI

    IPC: H01L31/0216 ,  H01L31/0224 ,  H01L31/072

    CPC classification number: H01L31/02167 ,  H01L31/022441 ,  H01L31/072

    Abstract: A back-contacting solar cell includes: a silicon substrate (1), wherein a shadow face of the silicon substrate (1) is delimited into a first region and a second region (2), and the second region (2) is doped to form a second-charge-carrier collecting end; a metal-chalcogen-compound layer (4), wherein the metal-chalcogen-compound layer (4) is deposited within at least the first region of the silicon substrate (1), and a region of the metal-chalcogen-compound layer (4) that corresponds to the first region forms a first-charge-carrier collecting end; a first electrode (5), wherein the first electrode (5) is correspondingly provided on the first-charge-carrier collecting end; and a second electrode (6), wherein the second electrode (6) is correspondingly provided within a region that corresponds to the second region (2). The collection and transferring of the first charge carrier are realized by using the first-charge-carrier collecting end.

    SOLAR CELL AND PHOTOVOLTAIC MODULE
    4.
    发明公开
    SOLAR CELL AND PHOTOVOLTAIC MODULE 审中-公开

    公开(公告)号：US20240090245A1

    公开(公告)日：2024-03-14

    申请号：US18272027

    申请日：2021-11-23

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Junjie XIE ,  Chen XU ,  Zifeng LI ,  Zhao WU ,  Jinling JIN ,  Tong LIU

    IPC: H10K30/40 ,  H10K39/10

    CPC classification number: H10K30/40 ,  H10K39/10

    Abstract: The present disclosure relates to the field of photovoltaic technologies. Disclosed are a solar cell and a photovoltaic module. The solar cell includes: an absorption layer; and an energy selective contact layer located on a surface of the absorption layer, the energy selective contact layer having selectivity for electron energy or hole energy, and the material of the energy selective contact layer including a low-dimensional perovskite material. According to the solar cell and the photovoltaic module provided by the present disclosure, a photovoltaic module can be manufactured.

    TANDEM PHOTOVOLTAIC DEVICE AND PRODUCTION METHOD
    5.
    发明申请
    TANDEM PHOTOVOLTAIC DEVICE AND PRODUCTION METHOD 有权

    公开(公告)号：US20230074348A1

    公开(公告)日：2023-03-09

    申请号：US17799746

    申请日：2020-10-22

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Zhao WU ,  Chen XU ,  Zifeng LI

    IPC: H01L31/0725 ,  H01L31/0312

    Abstract: A tandem photovoltaic device includes: an upper cell unit, a lower cell unit and a tunnel junction positioned between the upper cell unit and the lower cell unit; the tunnel junction includes an upper transport layer, a lower transport layer, and an intermediate layer positioned between the upper transport layer and the lower transport layer, the intermediate layer is an ordered defect layer, or, the intermediate layer is a continuous thin layer, or, the intermediate layer includes a first layer in contact with the lower transport layer and a second layer in contact with the upper transport layer; a doping concentration of the first layer is 10-10,000 times of a doping concentration of the lower transport layer, and the doping concentration of the first layer is less than 1021cm−3; a doping concentration of the second layer is 10-10,000 times of a doping concentration of the upper transport layer.

    SOLAR CELL, PREPARATION METHOD FOR SOLAR CELL, AND PHOTOVOLTAIC MODULE
    6.
    发明公开
    SOLAR CELL, PREPARATION METHOD FOR SOLAR CELL, AND PHOTOVOLTAIC MODULE 审中-公开

    公开(公告)号：US20230337444A1

    公开(公告)日：2023-10-19

    申请号：US18028491

    申请日：2021-12-07

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Junjie XIE ,  Chen XU ,  Zifeng LI ,  Zhao WU

    IPC: H10K30/10 ,  H10K30/50 ,  H10K71/00

    CPC classification number: H10K30/10 ,  H10K30/50 ,  H10K71/311 ,  H10K2101/70

    Abstract: A solar cell, a preparation method for a solar cell, and a photovoltaic module, relating to the technical field of solar energy photovoltaics. The solar cell includes a crystalline silicon cell unit, and a down-conversion luminescence layer and a perovskite layer sequentially located on the light-facing surface of the crystalline silicon cell unit. The band gap of the perovskite layer becomes gradually smaller in the direction from the light-facing surface to the back surface. The band gap at the back surface of the perovskite layer is greater than or equal to the band gap of an absorption layer of the crystalline silicon cell unit. Because the band gap gradually decreases from large to small, the perovskite layer features a wide absorption spectrum, a long charge carrier free path, higher luminous efficiency, thus being able to broaden the spectral absorption range of the solar cell, and improve energy use and conversion efficiency. The complex processing of multi-layer battery superposition is avoided, the multiple film layer structure is simplified, losses in transmission of charge carriers between film layer interfaces and series structures are avoided, the conversion efficiency of the solar cell is further improved, and the processing difficulty is reduced, facilitating industrial production.

    TANDEM PHOTOVOLTAIC DEVICE AND PRODUCTION METHOD
    7.
    发明公开
    TANDEM PHOTOVOLTAIC DEVICE AND PRODUCTION METHOD 审中-公开

    公开(公告)号：US20230144354A1

    公开(公告)日：2023-05-11

    申请号：US17912869

    申请日：2020-03-11

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Zhao WU ,  Chen XU ,  Zifeng LI

    IPC: H01L31/0687 ,  H01L31/0236 ,  H01L31/18

    CPC classification number: H01L31/0687 ,  H01L31/02363 ,  H01L31/1804

    Abstract: A tandem photovoltaic device and production method. The tandem photovoltaic device includes: an upper battery cell and a lower battery cell, and a tunnel junction located between the upper battery cell and the battery cell; the lower battery is a crystalline silicon cell; the tunnel junction includes: an upper crystalline silicon layer, a lower crystalline silicon layer and an intermediate layer located between the upper crystalline silicon layer and the lower crystalline silicon layer; the upper crystalline silicon layer, the lower crystalline silicon layer and the intermediate layer are in direct contact, and the doping types of the upper crystalline silicon layer and the lower crystalline silicon layer are opposite; the doping concentration of the upper crystalline silicon layer at the interface with the intermediate layer and the doping concentration of the lower crystalline silicon layer at the interface with the intermediate layer are greater than or equal to 1018 cm−3.

    LAMINATED SOLAR CELL AND PHOTOVOLTAIC ASSEMBLY
    9.
    发明公开
    LAMINATED SOLAR CELL AND PHOTOVOLTAIC ASSEMBLY 审中-公开

    公开(公告)号：US20240341107A1

    公开(公告)日：2024-10-10

    申请号：US18294040

    申请日：2022-05-26

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Zhao WU ,  Chen XU ,  Junjie XIE ,  Zifeng LI ,  Tong LIU

    IPC: H10K30/40 ,  H10K30/57 ,  H10K30/87 ,  H10K85/50

    CPC classification number: H10K30/40 ,  H10K30/57 ,  H10K30/87 ,  H10K85/50

    Abstract: A tandem solar cell and a photovoltaic assembly, The tandem solar cell includes: a top-layer perovskite sub-cell and a bottom-layer crystalline-silicon sub-cell, and an optical regulating layer provided between the top-layer perovskite sub-cell and the bottom-layer crystalline-silicon sub-cell. After the part of the target light rays that are not absorbed by the top-layer perovskite sub-cell have passed through the top-layer perovskite sub-cell, because the optical regulating layer can be used to reflect at least some of the target light rays back into the top-layer perovskite sub-cell, at least some of the target light rays can enter the top-layer perovskite sub-cell again to perform secondary absorption, which prevents that the target light rays within the short-wave wave band directly enter the bottom-layer crystalline-silicon sub-cell having a low utilization ratio of the target light rays within the short-wave wave band, thereby increasing the efficiency of the tandem solar cell.

    PEROVSKITE CELL AND PHOTOVOLTAIC MODULE
    10.
    发明公开
    PEROVSKITE CELL AND PHOTOVOLTAIC MODULE 审中-公开

    公开(公告)号：US20240251575A1

    公开(公告)日：2024-07-25

    申请号：US18294872

    申请日：2022-05-10

    Applicant: LONGI GREEN ENERGY TECHNOLOGY CO., LTD.

    Inventor： Junjie XIE ,  Zhao WU ,  Chen XU ,  Zifeng LI ,  Tong LIU ,  Zhuxing SUN

    IPC: H10K30/82 ,  H10K30/40 ,  H10K39/10

    CPC classification number: H10K30/82 ,  H10K30/40 ,  H10K39/10

    Abstract: Provided are a perovskite cell and a photovoltaic module. The perovskite cell includes a perovskite light absorption layer, a first carrier transport layer, a second carrier transport layer, a first transparent electrode layer, a second transparent electrode layer, and an optical adjustment layer, wherein the optical adjustment layer is arranged between the second carrier transport layer and the second transparent electrode layer; and the transmittance of the optical adjustment layer for visible light is greater than or equal to a preset transmittance, and the reflectivity of the optical adjustment layer for infrared light is greater than or equal to a preset reflectivity.

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