EQE spectra. Pabs and EQE spectra of a-Si:H/μc-Si tandem TFSCs with b/Λ = 0.75, Λ
= 520 nm, and Λ
= 930 nm, where a 18-nm ZnO layer is sandwiched by two junctions in (b) (noted: no ZnO layer in (a)). In Figures 3 and 4, ellipses are used to categorize the simulation results.