Trina Solar has been granted a patent for a method of manufacturing solar cells. The process involves providing a wafer with a substrate and a doped conducting layer, forming passivating layers on both surfaces, and ensuring coverage of textured structures to enhance 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 June 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.
Method for manufacturing a solar cell
The granted patent US12002899B2 outlines a method for manufacturing solar cells that involves several key steps to enhance the efficiency and structure of the solar cell matrix. The process begins with the provision of a wafer that consists of a substrate and a doped conducting layer. The substrate features a textured structure on its first surface and part of its side surfaces, while the doped conducting layer is applied to these textured areas. The method further includes the formation of a passivating contact layer on the substrate's second surface, followed by the application of two passivation layers—one on the doped conducting layer and another on the passivating contact layer—resulting in a comprehensive solar cell matrix.
Additionally, the patent details subsequent steps that can be taken after the formation of the solar cell matrix, such as laser cutting the matrix to create individual solar cells. The wafer preparation process is also elaborated, which includes texturing treatments, dopant diffusion, and etching to expose specific regions of the substrate. The method allows for the formation of electrodes on both passivation layers, ensuring electrical connectivity to the doped conducting layer and the passivating contact layer. This innovative approach aims to improve the overall performance and manufacturability of solar cells, contributing to advancements in solar technology.
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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.
