Fig. 4: Optoelectronic responses with GOPS.

a, b Mean (±s.e.m.) PCD (a) and PV (b) obtained with pristine PH1000/PCPDTBT:PC₆₀BM/Ti (grey squares, n = 4) and PH1000/PCPDTBT:PC₆₀BM/Ti supplemented with 1 v/v% GOPS (grey circles, n = 3) at 730 nm. The solid lines are the interpolations with an asymmetrical, five-parameter, logistic dose-response function for PCDs and a hyperbola function for PVs. The vertical red dotted lines represent the normalized irradiance for 730 nm (6 mW mm⁻²). c, d Grand-average PCD (c) and PV (d) traces obtained upon 10-ms pulses (730 nm, 6 mW mm⁻²) with pristine PH1000 (solid line, n = 4) and PH1000 with GOPS (dashed line, n = 3). The vertical dotted line in d shows the PV value 50 ms after the light onset. e, f Representative traces from single electrodes of PV upon the delivery of a train stimulation composed of 20 pulses (10 ms, 730 nm, 6 mW mm⁻²) delivered at 20 Hz with pristine PH1000 (f) and PH1000 with 1 v/v% of GOPS (e).