SUSTAINABLE RADIATION INVERTED METAMORPHIC MULTI-TRANSITIVE SOLAR ELEMENT Russian patent published in 2017 - IPC H01L31/687 

FIELD: physics.

SUBSTANCE: multi-transitional solar cell for the cosmic radiation environment. The multi-transitional solar cell has a plurality of solar sub-elements disposed in descending order of the forbidden band, including: a first solar sub-element consisting of InGaP and having a first forbidden zone. The first solar sub-element has the first short-circuit current associated with it; second solar sub-element consisting of GaAs and having a second forbidden zone that has a width less than the first forbidden band. The second solar sub-element has a second short-circuit current connected to it. At the beginning of the service life, the first short-circuit current is less than the second short-circuit current, so that the AM0 conversion efficiency is suboptimal. A third solar sub-element consisting of InGaAs disposed over the second solar sub-element and having a third forbidden zone narrower than the second forbidden zone and a third short-circuit current substantially matched to the second short-circuit current; and a fourth solar sub-element consisting of InGaAs disposed over the third solar sub-element and having a fourth forbidden zone narrower than the third bandgap and a fourth short-circuit current substantially matched to the third short-circuit current. However, at the end of their service life, short-circuit currents become substantially consistent.

EFFECT: increased efficiency of AM0conversion.

12 cl, 3 dwg