Figure 4.

I-V performance for GaInP/GaAs/GaInNAs triple-junction SC structures (not necessarily current matched) (a) and current-matched GaInP/GaAs/GaInNAs/Ge four-junction devices (b).

Aho et al. Nanoscale Research Letters 2014 9:61   doi:10.1186/1556-276X-9-61
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