JinkoSolar has been granted a patent for a solar cell design and production method that enhances photoelectric conversion performance. The cell features pyramid structures with transition surfaces, substructures, and specific doping concentrations. This innovation aims to improve solar cell efficiency. 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 January 2024 was 58%. Grant share is based on the ratio of number of grants to total number of patents.

Improved solar cell structure for enhanced photoelectric conversion

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

A recently granted patent (Publication Number: US11887844B2) discloses a novel solar cell design featuring an N-type substrate, a P-type emitter with unique pyramid structures, a tunnel layer, and a doped conductive layer. The P-type emitter consists of distinct first and second portions, each with specific characteristics such as pyramid structures with transition surfaces and substructures. The sheet resistance and doping concentrations of the first and second portions are finely tuned to optimize performance, with the first portion exhibiting lower resistance than the second. Additionally, the patent details the dimensions, doping elements, and junction depths of the emitter components, emphasizing the importance of these parameters in enhancing solar cell efficiency.

Furthermore, the patent extends its innovative design to a photovoltaic module comprising multiple interconnected solar cells with the same unique P-type emitter configuration. The module includes an encapsulation layer and a cover plate for protection, ensuring durability and longevity. The detailed specifications of the solar cells within the module mirror those of the standalone solar cell, highlighting the consistency and scalability of the technology. By emphasizing the precise control of sheet resistance, doping concentrations, and structural features, the patent aims to revolutionize solar cell efficiency and performance in photovoltaic applications. The inclusion of a first metal electrode in each cell further enhances electrical connectivity and overall functionality, showcasing a comprehensive approach to solar energy generation.

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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.