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EP 4 111 510 A1

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(43) Date of publication: 04.01.2023 Bulletin 2023/01 (21) Application number: 21709781.5 (22) Date of filing: 26.02.2021

(51) International Patent Classification (IPC):  H01L 51/56(2006.01) H01L 51/54(2006.01) B01J 31/16(2006.01) C09K 11/07(2006.01) H05B 33/14(2006.01) C07C 51/41(2006.01) (52) Cooperative Patent Classification (CPC): H01L 51/0003; H01L 51/0091; H01L 51/502; B01J 31/1691; C07C 51/418; C09K 9/02; A61P 31/04; C09K 11/06; B82Y 40/00; G01N 2021/7786; G01N 2033/4975   C-Sets: C07C 51/418, C07C 63/26; (86) International application number: PCT/GB2021/050495 (87) International publication number: WO 2021/171033 (02.09.2021 Gazette 2021/35)

(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: 28.02.2020 GB 202002886 (71) Applicant: Oxford University Innovation Limited Oxford, OX2 0JB (GB)	(72) Inventors: GUTIÉRREZ TOVAR, Mario 45007 Toledo (ES) TAN, Jin-Chong Oxford OX1 3PJ (GB) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)