Fig. 3: Impact of molecular n-doping on electrochemical doping. | Nature Communications

Fig. 3: Impact of molecular n-doping on electrochemical doping.

From: Water stable molecular n-doping produces organic electrochemical transistors with high transconductance and record stability

Fig. 3

a Spectroelectrochemistry measurements showing UV-vis absorption spectra changes with applied voltage (from −0.2 V to 0.6 V in 0.1 V increments) for the pristine P-90 system (0 mol% TBAF), compared to the best-performing, n-doped P-90:TBAF system (40 mol% TBAF). b Charge density in 0 mol% TBAF and 40 mol% TBAF thin-films, generated under electrochemical doping potentials applied during spectroelectrochemistry measurements. All measurements are carried out whilst the polymer thin-films are submerged in an aqueous 100 mM NaCl electrolyte solution, and the thin-film thicknesses are given in Table 1. c Electrochemical quartz crystal microbalance with dissipation (EQCM-D) monitoring for the pristine P-90 and best-performing P-90:TBAF systems, whilst exposed to 0.1 M NaCl(aq.) electrolyte at an electrochemical-doping potential of 0.45 V vs. VOC.

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