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. 2021 Jul 15;12:4259. doi: 10.1038/s41467-021-24500-2

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© The Author(s) 2021

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Fig. 2 — a JV curves in dark (dashed lines) and under 100 mW cm⁻² illumination (solid lines) of devices based on ZnPc:C₆₀ at different concentrations. A clear increase of the light and dark current is observed for devices with concentration higher than 3 wt%. b EQE of the same devices showed in a, measured at −5 V. The observed increase in current under illumination results in an increased EQE over 100%, achieving maximum of 450%.