Idemitsu Kosan has patented a photoelectric conversion element with a unique composition containing Cu, Ag, In, Ga, Se, and S. The element includes an intermediate region with specific Ag concentration levels for improved efficiency. The patent aims to enhance solar cell performance. GlobalData’s report on Idemitsu Kosan 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 Idemitsu Kosan, Anti-wear lubricants was a key innovation area identified from patents. Idemitsu Kosan's grant share as of March 2024 was 41%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for photoelectric conversion element with specific composition
A recently granted patent (Publication Number: US11973158B2) discloses a photoelectric conversion element with a unique composition and structure. The element includes a photoelectric conversion layer situated between two electrode layers, with the layer containing specific Group I (Cu, Ag), Group III (In, Ga), and Group VI (Se, S) elements. The layer is divided into front surface-side, rear surface-side, and intermediate regions, with the maximum concentration of Ag positioned in the intermediate region. The patent specifies that the Ag concentration should fall within the range of 0.00519 to 0.0140, with the rear surface-side region containing 0.19 or less Ag compared to the entire layer.
Moreover, the patent also details a method for manufacturing the photoelectric conversion element, involving the formation of a precursor layer with specific compositions and the subsequent conversion into a chalcogenide layer. The method emphasizes the strategic positioning and concentration of Ag within the precursor layer, ensuring that the maximum Ag concentration falls within the specified range. Additionally, the method highlights the unequal distribution of Ag between different regions of the precursor layer, with the second region closer to the light-receiving surface containing a higher amount of Ag compared to the first region. Overall, the patent aims to protect the unique composition and manufacturing process of the photoelectric conversion element, potentially contributing to advancements in solar cell technology.
To know more about GlobalData’s detailed insights on Idemitsu Kosan, buy the report here.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. 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.
