Electron Transfer Dynamics at Dye-Sensitized SnO2/TiO2 Core/Shell Electrodes in Aqueous/Nonaqueous Electrolyte Mixtures
Xiao L, Spies J, Sheehan C, Zeng Z, Gao Y, Gao T, Ehrlacher A, Zuerch M, Brudvig G, Mallouk T. Electron Transfer Dynamics at Dye-Sensitized SnO2/TiO2 Core/Shell Electrodes in Aqueous/Nonaqueous Electrolyte Mixtures. Journal Of The American Chemical Society 2024, 146: 18117-18127. PMID: 38900942, DOI: 10.1021/jacs.4c05187.Peer-Reviewed Original ResearchFlat band potentialOptical-pump terahertz-probe spectroscopyTransient absorption spectroscopyCore/shell electrodesSolvent electrolytesElectron transferElectron injectionBand potentialDynamics of photoinduced electron transferNanosecond transient absorption spectroscopyNegative flat band potentialSemiconductor flat-band potentialDye-sensitized photoanodeOxidized dye moleculesPhotoinduced electron injectionPhotoinduced electron transferElectron transfer dynamicsElectron injection efficiencySlow electron transferInjection efficiencyIncreasing acetonitrile concentrationConcentration of acetonitrileIncreasing concentrations of acetonitrileConduction band electronsCharge separation