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(11)

EP 4 555 122 A1

(12)

(43) Date of publication: 21.05.2025 Bulletin 2025/21 (21) Application number: 23741047.7 (22) Date of filing: 12.07.2023

(51) International Patent Classification (IPC):  C23C 14/24(2006.01) C23C 14/12(2006.01) H10K 85/50(2023.01) C23C 14/06(2006.01) H10K 71/16(2023.01) (52) Cooperative Patent Classification (CPC): C23C 14/24; H10K 71/16; H10K 71/164; H10K 85/50; C23C 14/243 (86) International application number: PCT/EP2023/069308 (87) International publication number: WO 2024/013227 (18.01.2024 Gazette 2024/03)

(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: KH MA MD TN (30) Priority: 15.07.2022 EP 22185268 (71) Applicant: First Solar, Inc. Tempe, AZ 85288 (US)	(72) Inventors: LARSSON, Fredrik 756 50 Uppsala (SE) WALLIN, Erik 755 98 Uppsala (SE) LUNDBERG, Olle 752 60 Uppsala (SE) (74) Representative: D Young & Co LLP  3 Noble Street London EC2V 7BQ London EC2V 7BQ (GB)