Search results for "Al-Ta mixed oxide"

showing 3 items of 3 documents

The influence of composition on band gap and dielectric constant of anodic Al-Ta mixed oxides

2015

Al-Ta mixed oxides were grown by anodizing sputter-deposited Al-Ta alloys of different composition. Photocurrent spectra revealed a band gap, Eg, slightly independent on Ta content and very close to that of anodic Ta2O5 (∼4.3 eV) with the exception of the anodic film on Al-10at% Ta, which resulted to be not photoactive under strong anodic polarization. The photoelectrochemical characterization allowed to estimate also the oxides flat band potential and to get the necessary information to sketch the energetic of the metal/oxide/electrolyte interfaces. Impedance measurements allowed to confirm the formation of insulating material and to estimate the dielectric constant of the oxides, which re…

Materials scienceAnodizingBand gapGeneral Chemical EngineeringOxideAnalytical chemistryDielectricElectrolyteAnodizingElectrochemistryMetalchemistry.chemical_compoundSettore ING-IND/23 - Chimica Fisica Applicatachemistryvisual_artBand gapvisual_art.visual_art_mediumAl-Ta mixed oxideElectrochemistryDielectric constantChemical Engineering (all)Polarization (electrochemistry)Flat band potential
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Electrochemical fabrication of high k Al-Ta mixed oxides

2014

Electrochemical fabrication high k Al-Ta mixed oxides Photoelectrochemistry Electrochemical Impedance Spectroscopy Tuning of solid state propertiesSettore ING-IND/23 - Chimica Fisica Applicata
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Tuning of solid state properties of Al-Ta mixed oxides

2014

Settore ING-IND/23 - Chimica Fisica Applicatasolid state properties Al-Ta mixed oxides Photoelectrochemistry Electrochemical Impedance Spectroscopy
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