Solar cell manufacture
A method for manufacturing solar cells is described wherein a plurality of wafers of a first conductivity type are assembled and thereafter doped with an active impurity of an opposite conductivity imparting type to establish a p-n junction. Thereafter front and back contacts are formed on the wafers by metallization, the back contact material being chosen so that it penetrates any p-n junctions present in the area of the back contact, if any, and thereby forms a low resistance ohmic contact through any such junction. Thereafter the contact containing wafers are coin stacked and plasma etched so that the edge faces of the coin stacked wafers have removed therefrom sufficient p-n junction to electrically isolate the front junction from the back junction or junctions. 11 claims.
- Assignee:
- Atlantic Richfield Co.
- Patent Number(s):
- US 4158591
- OSTI ID:
- 5858359
- Resource Relation:
- Patent File Date: Filed date 24 Apr 1978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SOLAR CELLS
FABRICATION
BORON ADDITIONS
ELECTRIC CONTACTS
ETCHING
MANUFACTURING
P-N JUNCTIONS
PHOSPHORUS ADDITIONS
PLASMA JETS
SILICON SOLAR CELLS
ALLOYS
BORON ALLOYS
DIRECT ENERGY CONVERTERS
ELECTRICAL EQUIPMENT
EQUIPMENT
JUNCTIONS
PHOTOELECTRIC CELLS
PHOTOVOLTAIC CELLS
SEMICONDUCTOR JUNCTIONS
SURFACE FINISHING
140501* - Solar Energy Conversion- Photovoltaic Conversion