Solar cells in bulk InP, made by an open tube diffusion process

This paper describes a simple open tube diffusion process for the fabrication of n +- p solar cells in indium phosphide. Large area cells (>0.25 cm 2) have been made by this process, with a photovoltaic conversion efficiency of 16.3% under simulated AM1 conditions of illumination. The external qu...

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Bibliographic Details
Published in:Solid-state electronics 1987-03, Vol.30 (3), p.283-287
Main Authors: Parat, K.K., Bothra, S., Borrego, J.M., Ghandhi, S.K.
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Exact sciences and technology
Natural energy
Solar energy
Solar thermal conversion
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Summary:This paper describes a simple open tube diffusion process for the fabrication of n +- p solar cells in indium phosphide. Large area cells (>0.25 cm 2) have been made by this process, with a photovoltaic conversion efficiency of 16.3% under simulated AM1 conditions of illumination. The external quantum efficiency of these cells has been measured, and is approximately 68% without an antireflective (AR) coating, and 100% with a 750 Å coating of silicon monoxide. An ideality factor of 1.1 and a saturation current density of 8×10 −15 A/cm 2 have been observed for these cells. These are the lowest (best) values reported to date for diffused structures in bulk InP.
ISSN:0038-1101
1879-2405
DOI:10.1016/0038-1101(87)90185-7