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(11)

EP 2 625 727 A1

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(43) Date of publication: 14.08.2013 Bulletin 2013/33 (21) Application number: 11830269.4 (22) Date of filing: 29.09.2011

(51) International Patent Classification (IPC):  H01L 35/00(2006.01) H01L 35/32(2006.01) H01L 35/30(2006.01) (86) International application number: PCT/IB2011/054295 (87) International publication number: WO 2012/046170 (12.04.2012 Gazette 2012/15)

(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 (30) Priority: 10.11.2010 EP 10190614 04.10.2010 EP 10186366 (71) Applicant: BASF SE 67056 Ludwigshafen (DE)	(72) Inventors: RENZE, Peter 68163 Mannheim (DE) MOORS, Jürgen 67434 Neustadt (DE) DEGEN, Georg 64653 Lorsch (DE) WASSERMANN, Knut Princeton NJ 08540 (US) (74) Representative: Féaux de Lacroix, Stefan  Isenbruck Bösl Hörschler LLP Patentanwälte Grafenberger Allee 342 40235 Düsseldorf 40235 Düsseldorf (DE)