Batteries: thermoelectric and photoelectric – Photoelectric – Cells
Patent
1985-10-21
1987-06-16
Weisstuch, Aaron
Batteries: thermoelectric and photoelectric
Photoelectric
Cells
136255, 136256, 29572, 29580, 29588, 357 73, H01L 3106, H01L 3118
Patent
active
046737707
ABSTRACT:
An antireflection coating and a top contact pattern comprised of a thin layer of cerium covered by a layer of silver are applied to the front surface of the basic thin solar cell structure of U.S. Pat. No. 4,338,481. The contact pattern contains platforms for bonding to similar metallized platforms formed on the underside of a top cover glass. The top cover glass also comprises underside peripheral metallization for bonding to a similar bottom cover glass. After bonding of the top cover glass to the solar cell by laser welding or thermocompression bonding, the epitaxial layer at the back of the cell is thinned to a thickness of about 2 microns. The rear surface of the solar cell is then antireflectively coated, contacted, and bonded to a similarly prepared bottom cover glass, the top and bottom cover glasses being bonded and sealed at their peripheries. The bottom cover glass may also be ground and silvered so as to form a diffusive back side reflector.
REFERENCES:
patent: 4283590 (1981-08-01), Bilger et al.
patent: 4294602 (1981-10-01), Horne
patent: 4338481 (1982-07-01), Mandelkorn
patent: 4348546 (1982-09-01), Little
patent: 4416052 (1983-11-01), Stern
patent: 4509248 (1985-04-01), Spitzer et al.
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