Radiation hardened solar cell

Details Radiation hardened solar cell Radiation hardened solar cell

1977-04-25

1979-01-23

Mack, John H.

Batteries: thermoelectric and photoelectric

Thermoelectric

Radiation pyrometer

136 89CC, H01L 3106

Patent

active

041359500

ABSTRACT:
A radiation hardened junction solar cell is prepared by etching V-grooves in the surface of a semiconductor substrate. The overall thickness of the substrate and the depth of the V-grooves are chosen as functions of the diffusion length of the minority carriers in the substrate material at beginning of life and at end of life for a given design application. An opposite conductivity type layer is then formed over the V-grooved surface of the semiconductor substrate. The planar back surface of the solar cell is highly doped to convert it into a minority carrier reflecting region.

REFERENCES:
patent: 3015590 (1962-01-01), Fuller
patent: 3150999 (1964-09-01), Rudenberg et al.
patent: 3278337 (1966-10-01), Gault
J. J. Cuomo et al., "Total Photon Absorption Solar Cells," IBM Tech. Disc. Bull., vol. 18, p. 935 (1975).
R. A. Arndt et al. "Optical Properties of the COMSAT Non-Reflective Cell," 11th IEEE Photovoltaic Specialists Conf., May 1975, pp. 40-43.
W. W. Lloyd, "Fabrication of an Improved Vertical Multijunction Solar Cell," 11th IEEE Photovoltaic Specialists' Conf., May 1975, pp. 349-355.
C. R. Baraona et al. "V-Grooved Silicon Solar Cells," 11th IEEE Photovoltaic Specialists' Conf., May 1975, pp.44-48.

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