(19)

(11)

EP 0 597 080 A1

(12)

(43) Date of publication: 18.05.1994 Bulletin 1994/20 (21) Application number: 93913801.0 (22) Date of filing: 06.05.1993

(51) International Patent Classification (IPC):  H01L 31/ 04( . ) H01L 31/ 0224( . ) H01L 31/ 0216( . ) H01L 31/ 068( . ) (86) International application number: PCT/US1993/004235 (87) International publication number: WO 1993/024960 (09.12.1993 Gazette 1993/29)

(84) Designated Contracting States: BE DE ES FR GB IT NL (30) Priority: 27.05.1992 US 19920889122 (71) Applicant: MOBIL SOLAR ENERGY CORPORATION Billerica, MA 01821 (US)	(72) Inventor: BOTTARI, Frank, J. Acton, MA 01720 (US) (74) Representative: Chameroy, Claude, et al  c/o Cabinet Malemont 42, avenue du Président Wilson F-75116 Paris F-75116 Paris (FR)