Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases · 1988 · 87 citations · 0 references
Materials ScienceOxide HeterostructuresInorganic ChemistryX-ray SpectroscopyX-ray Photoelectron SpectraCrystalline DefectsOxygen CoordinationEngineeringInorganic MaterialOxide ElectronicsApplied PhysicsCondensed Matter PhysicsCation-deficient Nickel OxidesElectron SpectroscopyPhysical ChemistryChemistryEnergy ShiftElectronic Structure
Cation-deficient nickel oxides have been investigated by X-ray photoelectron spectroscopy. The high-binding-energy features in the O(1s), Ni(2p) X.p.s. of defective NiO are described as multielectron final states, induced by defective sites. These sites are described as (NiO6)9– molecular clusters because of the d hole. The energy shift between the main peak and the satellite, in both the O(1s) and Ni(2p) X.p.s. spectra, is due to a change in the ionic charge and in the oxygen coordination induced by cation vacancies.