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. 2019 Mar 10;6(9):1802028. doi: 10.1002/advs.201802028

Figure 7.

Figure 7

a) Absorption profiles considered for two‐terminal tandem OPV calculations with the front‐ and back‐cell optical bandgaps (E opt,DA) of 2 and 1.4 eV, respectively (donor and NFA absorptions in both cells were considered to overlap). b) Efficiency prediction of two‐terminal NFA‐based tandem OPVs (the optical bandgaps for the front‐ and back‐cell were 2 and 1.4 eV, respectively) simulated from optical and electrical modelling. Evolution of the c) PCE and d) J SC of two‐terminal NF‐based tandem OPV cells as a function of front‐cell and back‐cell optical bandgaps (E opt,DA) assuming k = 10−12 cm3 s−1, and μn = μp = 10−3 cm2 V−1 s−1.