The efficiency limit is calculated using the Shockley-Queisser model, as implemented in Solcore. Select the number of junctions and drag the colored lines, or the slider above the plot, to change the bandgaps and see how it affects the theoretical maximum efficiency of a multi-junction solar cell. The short-circuit current in each junction is displayed below the bandgap.
Efficiency: -%
VOC: - V
JSC: - mA/cm2
FF: -%