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EP 4 352 793 A1

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(43) Date of publication: 17.04.2024 Bulletin 2024/16 (21) Application number: 22731678.3 (22) Date of filing: 03.06.2022

(51) International Patent Classification (IPC):  H01L 31/048(2014.01) H01L 31/05(2014.01) (52) Cooperative Patent Classification (CPC): H01L 31/0481; H01L 31/0504 (86) International application number: PCT/EP2022/065267 (87) International publication number: WO 2022/258542 (15.12.2022 Gazette 2022/50)

(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 MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 07.06.2021 EP 21382507 (71) Applicant: IZPITEK SOLAR, S.L. 48170 Zamudio (ES)

(72) Inventors: AIZPURUA BERROCAL, Jon 20009 DONOSTIA - SAN SEBASTIÁN (ES) HERNÁNDEZ CALAMA, Juan María 20009 DONOSTIA - SAN SEBASTIÁN (ES) CAMBARAU, Werther 20009 DONOSTIA - SAN SEBASTIÁN (ES) YURRITA MURUA, Naiara 20009 DONOSTIA - SAN SEBASTIÁN (ES) ZUBILLAGA ALCORTA, Oihana 20009 DONOSTIA - SAN SEBASTIÁN (ES) IMBULUZQUETA GARCÍA, Gorka 20009 DONOSTIA - SAN SEBASTIÁN (ES) ARRIZABALAGA CANELLADA, Igor 20009 DONOSTIA - SAN SEBASTIÁN (ES) CANO IRANZO, Francisco Jesús 20009 DONOSTIA - SAN SEBASTIÁN (ES) (74) Representative: ZBM Patents - Zea, Barlocci & Markvardsen  Rambla Catalunya, 123 08008 Barcelona 08008 Barcelona (ES)