Fig. 4: Thermal stability of binary, quaternary and hexanary blends.
From: Hexanary blends: a strategy towards thermally stable organic photovoltaics
a Fill factor FF and b power conversion efficiency PCE of H1, Q1 and B1 devices recorded before and after annealing the active layer up to 23 days at 130 °C; data points represent the mean and standard deviation of measurements done for 6 pixels on the same substrate. The active area of each pixel is 0.1 cm2. Time delayed collection field measurements with the total extracted charge Qtot (doted lines) as a function of the applied pre-bias overlaid with the respective J-V curves (solid lines) for c the fresh and aged B1 and d H1 devices. Source data are provided as a Source Data file.
