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Tunneling Relaxation of Photocurrent from Passive Films on Stainless Steel
- Source :
- Journal of The Electrochemical Society. 153:B178
- Publication Year :
- 2006
- Publisher :
- The Electrochemical Society, 2006.
-
Abstract
- The photocurrent transient effects of passive films grown on austenitic stainless steels in borate solutions have been investigated and explained by extending a mid-bandgap states model that was previously developed for titanium oxide. Tunneling of electrons trapped in mid-bandgap states into the conduction band was proposed as the reason behind the slow relaxation of photocurrent once the light is turned off. In addition, it was found that surface recombination effects started to appear at potentials where Cr(III) is expected to occur in the passive film, supporting earlier suggestions that this species can act as recombination centers.
- Subjects :
- Austenite
Photocurrent
Materials science
Condensed matter physics
Renewable Energy, Sustainability and the Environment
Metallurgy
chemistry.chemical_element
Electron
Condensed Matter Physics
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Titanium oxide
chemistry
Materials Chemistry
Electrochemistry
Relaxation (physics)
Boron
Recombination
Quantum tunnelling
Subjects
Details
- ISSN :
- 00134651
- Volume :
- 153
- Database :
- OpenAIRE
- Journal :
- Journal of The Electrochemical Society
- Accession number :
- edsair.doi...........973e72c346a99f10636006afde08bdce
- Full Text :
- https://doi.org/10.1149/1.2186035