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(11)

EP 2 715 797 A2

(12)

(88) Date of publication A3: 28.03.2013 (43) Date of publication: 09.04.2014 Bulletin 2014/15 (21) Application number: 12793962.7 (22) Date of filing: 29.05.2012

(51) International Patent Classification (IPC):  H01L 31/042(2014.01) H01L 31/18(2006.01) (86) International application number: PCT/US2012/039901 (87) International publication number: WO 2012/166749 (06.12.2012 Gazette 2012/49)

(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: 27.05.2011 US 201161490859 P (71) Applicant: Solexel, Inc. Milpitas, CA 95035 (US)	(72) Inventors: MOSLEHI, Mehrdad, M. Los Altos, CA 94024 (US) RANA, Virendra, V. Los Gatos, CA 85032 (US) KAPUR, Pawan Palo Alto, CA 94306 (US) (74) Representative: Richardt Patentanwälte GbR  Wilhelmstraße 7 65185 Wiesbaden 65185 Wiesbaden (DE)