(19)

(11)

EP 4 324 032 A1

(12)

(43) Date of publication: 21.02.2024 Bulletin 2024/08 (21) Application number: 22722889.7 (22) Date of filing: 12.04.2022

(51) International Patent Classification (IPC):  H01L 31/107(2006.01) H01L 31/115(2006.01) (52) Cooperative Patent Classification (CPC): H01L 31/1075; H01L 31/115 (86) International application number: PCT/IB2022/053407 (87) International publication number: WO 2022/219515 (20.10.2022 Gazette 2022/42)

(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: 14.04.2021 IT 202100009437 (71) Applicant: Fondazione Bruno Kessler 38123 Povo (TN) (IT)	(72) Inventors: GOLA, Alberto 38123 Trento (IT) BORGHI, Giacomo 38122 Trento (IT) BOSCARDIN, Maurizio 38068 Rovereto (IT) PATERNOSTER, Giovanni 38121 Trento (IT) (74) Representative: Trentin, Michele  Eureka IP Consulting Via Giovanni Lanza, 40-44 36100 Vicenza 36100 Vicenza (IT)