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(11)

EP 4 825 137 A1

(12)

(43) Date of publication: 21.10.2026 Bulletin 2026/43 (21) Application number: 24840860.1 (22) Date of filing: 13.12.2024

(51) International Patent Classification (IPC):  H10F 77/20(2025.01) H10K 30/50(2023.01) H10F 77/30(2025.01) H10K 30/81(2023.01) (52) Cooperative Patent Classification (CPC): H10F 10/19; H10F 77/311; H10F 77/211; H10K 30/50; H10K 30/81; H10K 30/83; H10F 77/315 (86) International application number: PCT/GB2024/053115 (87) International publication number: WO 2025/125821 (19.06.2025 Gazette 2025/25)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 15.12.2023 GB 202319328 (71) Applicant: Oxford Photovoltaics Limited Kidlington, Oxon OX5 1QU (GB)

(72) Inventors: WILLIAMS, Ben Yarnton, Kidlington, Oxon OX5 1QU (GB) HOOPER, Stewart Yarnton, Kidlington, Oxon OX5 1QU (GB) ROBINSON, Anna Yarnton, Kidlington, Oxon OX5 1QU (GB) SEBASTIEN, Thomas Yarnton, Kidlington, Oxon OX5 1QU (GB) CASE, Christopher Yarnton, Kidlington, Oxon OX5 1QU (GB) PEREZ, Laura Miranda Yarnton, Kidlington, Oxon OX5 1QU (GB) (74) Representative: The IP Asset Partnership Limited  Prama House 267 Banbury Road Oxford OX2 7HT Oxford OX2 7HT (GB)