PHOTOCELL OF SPACE LASER RADIATION DETECTOR-CONVERTER Russian patent published in 2013 - IPC H01L31/42 

FIELD: physics.

SUBSTANCE: invention relates to wireless transmission of electrical energy between spacecraft based on directed electromagnetic radiation from one spacecraft to a photoelectric converter-based detector-receiver of a second spacecraft. The photocell of a space laser radiation detector-converter has p-type and n-type semiconductor layers, alternating contact strips on the working side of the photocell and a continuous ohmic contact on the rear side of the photocell, wherein a diffraction grating is placed on the working side of the photocell with given thickness δ of its photoactive region, said diffraction grating being made from opaque parallel contact strips with width b, which alternate with a constant spacing Δ and make up an ohmic contact with the semiconductor layer of the photocell, on which electromagnetic radiation of the laser with wavelength λ falls normally. The diffraction grating is made such that it satisfies given relationships that a protected by the present invention.

EFFECT: invention enables to increase efficiency and specific values of photocurrent of the photoelectric converter in space.

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