The performance of advanced III-V solar cells

Test results show triple junction solar cells with efficiencies as high as 27% at 28C and 136.7 mw/cm/sup 2/. Triple junction cells also achieve up to 27.5% at -120C and 5 mw/cm/sup 2/, conditions applicable to missions to Jupiter. Some triple junction cells show practically no degradation as a result of Low Intensity Low Temperature (LILT) effects, while others show some; this degradation can be overcome with minor changes to the cell design.