JinkoSolar has filed a patent for a solar cell and photovoltaic module. The invention includes a substrate, a tunneling dielectric layer, a doped conductive layer, a passivation layer, and multiple electrodes. The doped conductive layer has heavily doped regions with a higher doping concentration than other regions. The electrodes contact the doped conductive layer, with at least two heavily doped regions in contact with the same electrode. The substrate also has heavily doped regions aligned with the heavily doped regions in the conductive layer. GlobalData’s report on JinkoSolar gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData s company profile on JinkoSolar, artificial photosynthesis was a key innovation area identified from patents. JinkoSolar's grant share as of June 2023 was 1%. Grant share is based on the ratio of number of grants to total number of patents.

The patent is filed for a solar cell with heavily doped regions

Source: United States Patent and Trademark Office (USPTO). Credit: JinkoSolar Holding Co Ltd

A recently filed patent (Publication Number: US20230187564A1) describes a new design for a solar cell and photovoltaic module. The solar cell includes a substrate, a tunneling dielectric layer, and a doped conductive layer. The tunneling dielectric layer is positioned between the doped conductive layer and the substrate. The doped conductive layer contains a doping element of either an N type or a P type. It also has multiple heavily doped regions that are spaced apart and extend in a specific direction. The doping concentration in these heavily doped regions gradually decreases from the doped conductive layer to the substrate. The solar cell also includes a passivation layer on the surface of the doped conductive layer and multiple electrodes that penetrate the passivation layer to contact the doped conductive layer. At least two of the heavily doped regions are in contact with the same electrode. The substrate has heavily doped regions aligned with the heavily doped regions in the doped conductive layer, and they have the same type of doping element.

The patent also describes a photovoltaic module that includes a cell string with multiple solar cells, a package adhesive film that covers the cell string, and a cover plate that covers the package adhesive film. Each solar cell in the cell string has the same design as described above. The heavily doped regions in the substrate are aligned with the heavily doped regions in the doped conductive layer, and they have the same type of doping element. The thickness of the doped conductive layer in both the solar cell and the photovoltaic module is in the range of 40 nm to 150 nm.

This patent introduces a novel design for solar cells and photovoltaic modules that aims to improve their efficiency and performance. The specific arrangement of heavily doped regions and the gradual decrease in doping concentration in the doped conductive layer and substrate are intended to enhance the cell's ability to convert sunlight into electricity. The inclusion of a passivation layer and multiple electrodes further optimize the cell's performance. The photovoltaic module, which incorporates multiple solar cells with this design, offers a scalable solution for generating solar power. The thickness of the doped conductive layer falls within a specific range, which may have implications for manufacturing and cost-effectiveness. Overall, this patent presents a promising development in solar cell technology that could contribute to the advancement of renewable energy systems.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies