Study of reaction coupling and interfacial kinetics at semiconductor electrodes by band edge shift measurements
Identifieur interne : 001D04 ( Istex/Checkpoint ); précédent : 001D03; suivant : 001D05Study of reaction coupling and interfacial kinetics at semiconductor electrodes by band edge shift measurements
Auteurs : P. Allongue [France] ; S. Blonkowski [France] ; D. Lincot [France]Source :
- Journal of Electroanalytical Chemistry [ 0022-0728 ] ; 1991.
Abstract
Through band edge shift (BES) measurements the paper puts forward new aspects concerning the study of reactions that take place at the semiconductor/electrolyte interface. In particular it focuses on the problem raised by reaction coupling, that is the interdependence between the redox and the photocorrosion reactions at photoanodes for instance. BES determination coupled with stabilization characterization was performed with n-GaAs photoanodes in contact with various redox solutions. With respect to surface charging, it is shown that reactions do not always act in parallel; surface effects (adsorption of redox species for example) may strongly affect the reaction scheme. For the simplest case (reaction in parallel) we propose a way of determining the electrode stability from BES measurements.
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DOI: 10.1016/0022-0728(91)85399-A
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Allongue</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>UPR 15 du CNRS, Physique des Liquides et electrochimie, Laboratoire de l'Université Pierre et Marie Curie, 4 Place Jussieu</wicri:regionArea><wicri:noRegion>4 Place Jussieu</wicri:noRegion><wicri:noRegion>4 Place Jussieu</wicri:noRegion></affiliation></author><author><name sortKey="Blonkowski, S" sort="Blonkowski, S" uniqKey="Blonkowski S" first="S." last="Blonkowski">S. Blonkowski</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>UPR 15 du CNRS, Physique des Liquides et electrochimie, Laboratoire de l'Université Pierre et Marie Curie, 4 Place Jussieu</wicri:regionArea><wicri:noRegion>4 Place Jussieu</wicri:noRegion><wicri:noRegion>4 Place Jussieu</wicri:noRegion></affiliation></author><author><name sortKey="Lincot, D" sort="Lincot, D" uniqKey="Lincot D" first="D." last="Lincot">D. Lincot</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>UA 216 du CNRS, ENSCP, Laboratoire d'electrochimie analytique et appliquée, 11 rue Pierre et Marie Curie</wicri:regionArea><wicri:noRegion>11 rue Pierre et Marie Curie</wicri:noRegion><wicri:noRegion>11 rue Pierre et Marie Curie</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Journal of Electroanalytical Chemistry</title><title level="j" type="abbrev">JEC</title><idno type="ISSN">0022-0728</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1991">1991</date><biblScope unit="volume">300</biblScope><biblScope unit="issue">1–2</biblScope><biblScope unit="page" from="261">261</biblScope><biblScope unit="page" to="281">281</biblScope></imprint><idno type="ISSN">0022-0728</idno></series><idno type="istex">44BA6CFD5425C337EC67104BB7448DEC5A9BFCE5</idno><idno type="DOI">10.1016/0022-0728(91)85399-A</idno><idno type="PII">0022-0728(91)85399-A</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-0728</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Through band edge shift (BES) measurements the paper puts forward new aspects concerning the study of reactions that take place at the semiconductor/electrolyte interface. In particular it focuses on the problem raised by reaction coupling, that is the interdependence between the redox and the photocorrosion reactions at photoanodes for instance. BES determination coupled with stabilization characterization was performed with n-GaAs photoanodes in contact with various redox solutions. With respect to surface charging, it is shown that reactions do not always act in parallel; surface effects (adsorption of redox species for example) may strongly affect the reaction scheme. For the simplest case (reaction in parallel) we propose a way of determining the electrode stability from BES measurements.</div></front></TEI><affiliations><list><country><li>France</li></country></list><tree><country name="France"><noRegion><name sortKey="Allongue, P" sort="Allongue, P" uniqKey="Allongue P" first="P." last="Allongue">P. Allongue</name></noRegion><name sortKey="Blonkowski, S" sort="Blonkowski, S" uniqKey="Blonkowski S" first="S." last="Blonkowski">S. Blonkowski</name><name sortKey="Lincot, D" sort="Lincot, D" uniqKey="Lincot D" first="D." last="Lincot">D. Lincot</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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