Charge Dynamics as Probed by Small Signal-Modulated Photocurrent and Impedance Spectroscopy of Metal Vanadate Semiconductors and Alloys.

ABSTRACT: This study presents the combined and complementary use of two techniques, namely, intensity modulated photocurrent spectroscopy (IMPS) and photoelectrochemical impedance spectroscopy (PEIS) for the study of partially or wholly replacing copper with an alkaline earth metal (Mg, Ca) in a metavanadate compound matrix (MV₂O₆). To this end, the three reference compounds (CuV₂O₆, CaV₂O₆, MgV₂O) and two alloy compositions (Mg_0.1Cu_0.9V₂O₆ and Ca_0.1Cu_0.9V₂O₆), obtained from a solution combustion technique, were screen-printed on fluorine-doped tin oxide glass (FTO) substrates. Wavelength discrimination for optical excitation of these se

SUBMITTER: Exposito-Galvez JC 

PROVIDER: S-EPMC12697059 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature