(19)

(11)

EP 4 817 092 A2

(12)

(88) Date of publication A3: 03.07.2025 (43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24822064.2 (22) Date of filing: 21.11.2024

(51) International Patent Classification (IPC):  H01L 23/31(2006.01) H01L 23/495(2006.01) (52) Cooperative Patent Classification (CPC): H10W 74/111; H10W 70/481; H10W 42/60; H10W 90/756; H10W 72/884; H10W 74/00; H10W 72/551 (86) International application number: PCT/US2024/056789 (87) International publication number: WO 2025/117307 (05.06.2025 Gazette 2025/23)

(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: 30.11.2023 US 202318525028 (71) Applicant: Wolfspeed, Inc. Durham, NC 27703 (US)	(72) Inventors: DEZSI, Geza Durham, North Carolina 27703 (US) LIN, Yusheng Durham, North Carolina 27703 (US) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)