Photovoltaic cell having controllable spectral response

Details Photovoltaic cell having controllable spectral response Photovoltaic cell having controllable spectral response

1974-08-05

1977-08-23

Edlow, Martin H.

Metal treatment

Stock

Ferrous

357 63, 357 64, 357 89, 357 90, 357 29, 148186, 148 15, H01L 2714

Patent

active

040443728

ABSTRACT:
The spectral response of a photovoltaic cell is controlled by modifying the minority carrier transport characteristics of the cell semiconductor body. Recombination centers are provided in the body that reduce the lifetime or diffusion distance of minority carriers. Thus a reduced percentage of minority carriers produced deep in the body by absorption of relatively long wavelength photons reach the cell junction, as compared with carriers produced at lesser depth by absorption of shorter wavelength photons. The result is a shift in the peak spectral response of the cell toward shorter wavelengths.

REFERENCES:
patent: 3413145 (1968-11-01), Robinson
patent: 3414434 (1968-12-01), Manasevit
patent: 3418473 (1968-12-01), Blue
patent: 3440113 (1969-05-01), Wolley
patent: 3443102 (1969-05-01), Kaye
patent: 3462311 (1969-08-01), Ross
patent: 3515576 (1970-06-01), Manasevit
patent: 3728592 (1963-04-01), Joshi

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