(19)

(11)

EP 1 963 546 A2

(12)

(88) Date of publication A3: 03.01.2008 (43) Date of publication: 03.09.2008 Bulletin 2008/36 (21) Application number: 06820415.5 (22) Date of filing: 04.12.2006

(51) International Patent Classification (IPC):  C25B 1/04(2006.01) H01L 27/30(2006.01) (86) International application number: PCT/GB2006/004530 (87) International publication number: WO 2007/066087 (14.06.2007 Gazette 2007/24)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 05.12.2005 GB 0524809 (71) Applicant: Hydrogen Solar Ltd. 6-7 New Bridge Street London, Middlesex EC4V 6AB (GB)	(72) Inventors: GRAETZEL, Michael CH-1025 St-Sulpice (CH) LISKA, Paul CH-1018 Lausanne (CH) (74) Representative: Muttock, Neil John  QED Intellectual Property Limited Harrow Exchange, 2 Gayton Road Middlesex Harrow HA1 2XU Harrow Exchange, 2 Gayton Road Middlesex Harrow HA1 2XU (GB)