halfgeleiderdiode,comprising a layer of a ferromagnetic semiconductor boules of chalcogenide chroomspineltype and a layer of a semiconductor boules of sulphur indiumspineltype.

摘要

A photovoltaic converter, useful for example as a photodetector or solar cell, comprising a main unit consisting of a p-n heterojunction of a p- or n-type magnetic semiconductor MCr2X4 in which M is Zn, Cd or Hg and X is O, S, Se or Te and an n- or p-type semiconductor M'In2S4 in which M' is Zn, Cd or Hg and which has an optical absorption edge at a shorter wavelength than the optical absorption edge of the MCr2X4; a first electrode ohmically fixed to the surface of the MCr2X4; and a second electrode fixed ohmically to the surface of the M'In2S4 and allowing light to reach the surface of M'In2S4. With a decrease in temperature, the photovoltaic converter has the long wavelength edge of its spectral photovoltaic response shifted to a longer wavelength contrary to known photovoltaic converters.