Fig. 5: Characterization of the ZnO UV filter.
From: Non-fullerene acceptor organic photovoltaics with intrinsic operational lifetimes over 30 years
a UV-Vis absorption spectra of a ZnO UV filter plotted vs. aging time under simulated AM1.5 G 1 sun illumination in air over 65 days. b Current-density-voltage characteristics, and c external quantum efficiency (EQE) spectra of fresh PCE-10:BT-CIC (1:1.5, w/w) devices with a ZnO UV filter, as well as the aged device under simulated AM1.5 G 1 sun illumination. d Normalized PCE plotted vs. aging time under ultraviolet illumination equivalent to 60 suns for more than 350 h with and without ZnO UV filter. The error bars indicate the 1 s.d. uncertainty of PCE measurements.
