Solar cell manufacture

Details Solar cell manufacture Solar cell manufacture

1979-03-29

1980-04-15

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

29572, 134 3, 136 89SG, 136 89CC, 156657, 252 793, H01L 21306

Patent

active

041982622

ABSTRACT:
A method for manufacturing solar cells from a silicon wafer having a p-n junction therein and front and back contacts thereon, the improvement comprising washing said wafer with a buffered hydrofluoric acid solution having a pH of from about 3.5 to about 6.5 and containing from about 2 to about 10 weight percent hydrofluoric acid based on the total weight of the solution.

REFERENCES:
patent: 2376219 (1945-05-01), Winslow
patent: 2966432 (1960-12-01), Buck
patent: 4052253 (1977-10-01), Kingzett
patent: 4152824 (1979-05-01), Gonsiorawski

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