Improving the voltage of GaAs solar cells with In 0.4 Ga 0.6 As nanostructures

The fundamental reason for the decrease in solar cells (SC) voltage when introducing nanostructures has been found. It consists in the fact that recombination redistributes between nanostructures and bulk GaAs. It has been shown that, by changing the position of nanostructures medium in the p-i-n GaAs SCs, it is possible to partially suppress the recombination and improve the voltage maintaining an increase in the short-circuit current. The decrease of the recombination via nanostructures has provided an increase in SC efficiency from 19.87% to 21.94%.