Fig. 2: PV performance of Pb–Sn perovskite solar cells.
From: All-perovskite tandem solar cells with improved grain surface passivation
a, PV parameters of devices with different passivating agents (15 devices for each type). b, c, Representative J–V (b) and EQE (c) curves of CF3-PA devices with absorber layer thicknesses of 750, 900 and 1,200 nm. d, e, J–V (d) and EQE (e) curves of the best CF3-PA device (with 1.2-μm-thick absorber). The inset in d shows the PCE distribution of 237 CF3-PA devices, showing an average PCE of 20.8 ± 0.5%.
