Semiconductor solar cells

Details Semiconductor solar cells Semiconductor solar cells

1985-09-18

1987-07-21

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

29572, 29576B, 148 15, 148176, 148DIG60, 136252, 136261, 136262, H01L 3106, H01L 3118

Patent

active

046819835

ABSTRACT:
A photovoltaic solar cell comprises a piece of semiconductor material incorporating a p-type region, an n-type region, a p-n junction between the two, electrodes contacting the two regions, and within its body a lattice defect denuded zone and a lattice defect gettering zone.
The defect gettering zone may be a precipitate-rich zone or a region of lattice damage. The denuded zone may include the p-n junction.
The semiconductor material may be Si, GaAs or InP.
Methods for making the solar cell are described, involving heat treatment steps to produce a denuded zone, nucleating precipitates and generating precipitates. Alternatively precipitation may be nucleated, or a lattice damage zone may be generated, by proton bombardment.

REFERENCES:
F. S. D'Aragona et al, Solar Cells, vol. 10, pp. 129-143 (1983).
K. Nagasawa et al, Appl. Phys. Lett., vol. 37, pp. 622-624 (1980).

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