Abstract
An AlGaAs/GaAs photovoltaic converter for a mock-up of an environmentally friendly radioisotope energy source of ultra-long use with a YPO4 : Eu/(238Pu) radioluminescent emitter with an extremely low content of the isotope 238Pu<0.1 wt.% was studied. The modeling of the Al0.8Ga0.2As/GaAs heterostructure for the conversion of nanowatt power levels of an optical signal has been carried out. The calculated and experimental efficiency of the mock-up with a photovoltaic converter at a radioluminescent source power of 1 nW was ~1.4%. Keywords: radioisotope energy source, AlGaAs/GaAs photo converter, optical radiation radioluminescent source, current flow mechanisms, conversion efficiency.
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