Probing charge transfer processes at p-GaAs electrodes under weak optical excitation
By Tamski, Mika; Blumenchein, Felix; Roussel, Christophe; Ansermet, Jean-Philippe
Published in Journal of Photochemistry and Photobiology A: Chemistry
2019
Abstract
The p-GaAs photocathode/acetonitrile interface was characterised in the dark and with tens of ?W/cm2 laser powers at 830 nm wavelength, using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Two redox mediators were used that present completely different behaviours under low optical excitation: one (Tris(2,2