Trina Solar. has filed a patent for a solar cell design featuring a substrate with emitters of different doping types on the back surface, separated by an insulating spacing structure. The electrodes are connected to the emitters, offering potential improvements in solar cell efficiency. GlobalData’s report on Trina Solar 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 Trina Solar, Artificial photosynthesis was a key innovation area identified from patents. Trina Solar's grant share as of January 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.
Solar cell with dual emitters and insulating spacing structure
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A recently filed patent (Publication Number: US20230420593A1) describes a novel solar cell design that includes a substrate with front and back surfaces, a first emitter with a specific doping type, a second emitter with an opposite doping type, and an insulating spacing structure between the two emitters. The solar cell also features electrodes connected to each emitter, with the insulating spacing structure being annular in shape, allowing for precise placement of the emitters. Additionally, the patent outlines the use of a back passivation layer and a passivation contact structure to enhance the efficiency of the solar cell.
The method for preparing the solar cell involves forming a doped layer on the back surface of the substrate, creating the insulating spacing structure, and then forming the second emitter with a different doping type. The process includes steps such as etching to create the annular spacing groove, cleaning and texturing the substrate, and applying an insulating passivation material. By sequentially forming layers and diffusing doping elements, the method ensures the efficient production of the solar cell. The patent also details the removal of certain layers in specific regions of the substrate to optimize performance. Overall, the patent presents a comprehensive approach to designing and manufacturing solar cells with improved efficiency and functionality.
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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 across the world’s largest industries.
