6533b852fe1ef96bd12aa449
RESEARCH PRODUCT
INFLUENCE OF THE ANODIZATION CONDITIONS ON THE ELECTRONIC PROPERTIES AND CRYSTALLOGRAPHIC STRUCTURES OF THE CORROSION LAYERS ON TUNGSTEN. A PHOTOELECTROCHEMICAL APPROACH.
Carmelo SunseriF. Di QuartoSalvatore Piazzasubject
CrystallographyMaterials sciencechemistryBand gapAnodizingchemistry.chemical_elementQuantum efficiencyCrystal structureTungstenAbsorption (electromagnetic radiation)CorrosionAmorphous soliddescription
ABSTRACT The influence of morphology, composition and crystallographic structure on the photoelectrochemical behaviour of anodic oxide films on tungsten obtained in various conditions of anodization has been investigated. Different photocurrent spectra and absorption edges were obtained for each type of film. Optical band gaps ranging between 2.55 eV and 3.15 eV were determined for crystalline and amorphous WO 3 films grown in different conditions. The low quantum efficiency of the anodic films must be attributed to the presence of an amorphous (a-W0 3 ) film which controls the transport of the injected photocarriers.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1983-01-01 |