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(11)

EP 2 691 990 A2

(12)

(88) Date of publication A3: 07.02.2013 (43) Date of publication: 05.02.2014 Bulletin 2014/06 (21) Application number: 12765891.2 (22) Date of filing: 28.03.2012

(51) International Patent Classification (IPC):  H01L 31/042(2006.01) H01L 31/18(2006.01) H01L 31/0216(2006.01) (86) International application number: PCT/US2012/031043 (87) International publication number: WO 2012/135395 (04.10.2012 Gazette 2012/40)

(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: 28.03.2011 US 201161468548 P (71) Applicant: Solexel, Inc. Milpitas, CA 95035-7405 (US)

(72) Inventors: MOSLEHI, Mehrdad, M. Los Altos, CA 94024 (US) KRAMER, Karl-josef San Jose, CA 95125 (US) SEUTTER, Sean San Jose, CA 95127 (US) KAPUR, Pawan Burlingame, CA 94010 (US) STALCUP, Thom Milpitas, CA 95035 (US) WANG, David, Xuan-qi Fremont, CA 94539 (US) KAMIAN, George, D. Scotts Valley, CA 95066 (US) MANTEGHI, Kamran San Jose, CA 95111 (US) SU, Yen-sheng Milpitas, CA 95035 (US) ANBALAGAN, Pranav San Jose, CA 95126 (US) RANA, Virendra, V Los Gatos, CA 95032 (US) CALCATERRA, Anthony Milpitas, CA 95035 (US) OLSEN, Gerry San Jose, CA 95128 (US) WORWAG, Wojciech Fremont, CA 94538 (US) (74) Representative: Richardt Patentanwälte GbR  Wilhelmstraße 7 65185 Wiesbaden 65185 Wiesbaden (DE)