Radiation degradation in In/sub 0.53/Ga/sub 0.47/As solar cells

This paper presents the radiation results on p/n In/sub 0.53/Ga0/sub 0.47/As bottom cells. The main conclusion is that In/sub 0.53/Ga0/sub 0.47/As solar cells display the same radiation tolerance, regardless of the cell polarity. This result is, in general, not expected. Previous results involving damage coefficients for both Si, GaAs, and InP show that the polarity of the device does indeed matter. This paper therefore gives device fabricators the liberty of choosing either type of polarity depending on their needs.<>