(19)

(11)

EP 2 401 767 A2

(12)

(88) Date of publication A3: 27.01.2011 (43) Date of publication: 04.01.2012 Bulletin 2012/01 (21) Application number: 10746690.6 (22) Date of filing: 23.02.2010

(51) International Patent Classification (IPC):  H01L 31/042(2006.01) H01L 23/28(2006.01) (86) International application number: PCT/US2010/024985 (87) International publication number: WO 2010/099080 (02.09.2010 Gazette 2010/35)

(84) Designated Contracting States: 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 SE SI SK SM TR (30) Priority: 24.02.2009 US 392053 24.02.2009 US 392055 (71) Applicant: Abound Solar, Inc. Loveland, Colorado 80538 (US)	(72) Inventors: BARTH, Kurt L. Fort Collins Colorado 80526-1158 (US) POWELL, John C. Fort Collins Colorado 80526-4604 (US) MORRIS, Neil Fort Collins Colorado 80525-3199 (US) MAHVAN, Nader Niwot Colorado 80503-7649 (US) (74) Representative: Haley, Stephen  Gill Jennings & Every LLP The Broadgate Tower 20 Primrose Street GB-London EC2A 2ES GB-London EC2A 2ES (GB)