LIGHT‐INDUCED ELECTRON TRANSPORT ACROSS SEMICONDUCTOR ELECTRODE/REACTION‐CENTER FILM/ELECTROLYTE INTERFACES
Identifieur interne : 001D68 ( Istex/Curation ); précédent : 001D67; suivant : 001D69LIGHT‐INDUCED ELECTRON TRANSPORT ACROSS SEMICONDUCTOR ELECTRODE/REACTION‐CENTER FILM/ELECTROLYTE INTERFACES
Auteurs : Michael Seibert [États-Unis] ; A. Frederick Janzen [Canada] ; M. Kendall-Tobias [États-Unis]Source :
- Photochemistry and Photobiology [ 0031-8655 ] ; 1982-02.
Abstract
Abstract— Reaction center (RC) complexes isolated from the photosynthetic bacterium Rhodopseudomonas sphaeroides R‐26 were dried as a film onto platinum and semiconductor (SnO2) electrodes. The light‐induced primary charge separation which occurs across the biological complex couples electrically with the SnO2 but not with the metal electrode on the time scale of observation. As the working electrode in a two‐electrode photoelectrochemical cell, RC‐coated SnO2 generated photovoltages as high as 80 mV and photocurrents as high as 0.5µA·cm2 when exposed to light of λ >600nm. The number of quinone molecules per RC strongly influences the photovoltage and photocurrent observed. Photo‐effects generated by RC electrodes persist after several days of storage; however, the kinetics and polarity of the effects are subject to change. The potential use of RC electrodes lies more as a new probe of photosynthetic electron transport rather than as a solar energy conversion device because modification to the RCs and their environment affect the electrical properties of the cell. An energy‐level model is proposed to explain how the photoelectrochemical cell functions.
Url:
DOI: 10.1111/j.1751-1097.1982.tb03831.x
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">LIGHT‐INDUCED ELECTRON TRANSPORT ACROSS SEMICONDUCTOR ELECTRODE/REACTION‐CENTER FILM/ELECTROLYTE INTERFACES</title><author><name sortKey="Seibert, Michael" sort="Seibert, Michael" uniqKey="Seibert M" first="Michael" last="Seibert">Michael Seibert</name><affiliation wicri:level="1"><mods:affiliation>*Solar Energy Research Institute, Golden, CO 80401, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>*Solar Energy Research Institute, Golden, CO 80401</wicri:regionArea></affiliation></author><author><name sortKey="Janzen, A Frederick" sort="Janzen, A Frederick" uniqKey="Janzen A" first="A. Frederick" last="Janzen">A. Frederick Janzen</name><affiliation wicri:level="1"><mods:affiliation>†Photochemical Research Associates, Inc., London, Ontario N6A 5B7, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>†Photochemical Research Associates, Inc., London, Ontario N6A 5B7</wicri:regionArea></affiliation></author><author><name sortKey="Kendall Obias, M" sort="Kendall Obias, M" uniqKey="Kendall Obias M" first="M." last="Kendall-Tobias">M. Kendall-Tobias</name><affiliation wicri:level="1"><mods:affiliation>*Solar Energy Research Institute, Golden, CO 80401, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>*Solar Energy Research Institute, Golden, CO 80401</wicri:regionArea></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:67D2EC04DD790C99EE09E1C418125A697072E8FB</idno><date when="1982" year="1982">1982</date><idno type="doi">10.1111/j.1751-1097.1982.tb03831.x</idno><idno type="url">https://api-v5.istex.fr/document/67D2EC04DD790C99EE09E1C418125A697072E8FB/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001D68</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001D68</idno><idno type="wicri:Area/Istex/Curation">001D68</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">LIGHT‐INDUCED ELECTRON TRANSPORT ACROSS SEMICONDUCTOR ELECTRODE/REACTION‐CENTER FILM/ELECTROLYTE INTERFACES</title><author><name sortKey="Seibert, Michael" sort="Seibert, Michael" uniqKey="Seibert M" first="Michael" last="Seibert">Michael Seibert</name><affiliation wicri:level="1"><mods:affiliation>*Solar Energy Research Institute, Golden, CO 80401, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>*Solar Energy Research Institute, Golden, CO 80401</wicri:regionArea></affiliation></author><author><name sortKey="Janzen, A Frederick" sort="Janzen, A Frederick" uniqKey="Janzen A" first="A. Frederick" last="Janzen">A. Frederick Janzen</name><affiliation wicri:level="1"><mods:affiliation>†Photochemical Research Associates, Inc., London, Ontario N6A 5B7, Canada</mods:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>†Photochemical Research Associates, Inc., London, Ontario N6A 5B7</wicri:regionArea></affiliation></author><author><name sortKey="Kendall Obias, M" sort="Kendall Obias, M" uniqKey="Kendall Obias M" first="M." last="Kendall-Tobias">M. Kendall-Tobias</name><affiliation wicri:level="1"><mods:affiliation>*Solar Energy Research Institute, Golden, CO 80401, USA</mods:affiliation><country xml:lang="fr">États-Unis</country><wicri:regionArea>*Solar Energy Research Institute, Golden, CO 80401</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j">Photochemistry and Photobiology</title><idno type="ISSN">0031-8655</idno><idno type="eISSN">1751-1097</idno><imprint><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="1982-02">1982-02</date><biblScope unit="volume">35</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="193">193</biblScope><biblScope unit="page" to="200">200</biblScope></imprint><idno type="ISSN">0031-8655</idno></series><idno type="istex">67D2EC04DD790C99EE09E1C418125A697072E8FB</idno><idno type="DOI">10.1111/j.1751-1097.1982.tb03831.x</idno><idno type="ArticleID">PHP193</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0031-8655</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract">Abstract— Reaction center (RC) complexes isolated from the photosynthetic bacterium Rhodopseudomonas sphaeroides R‐26 were dried as a film onto platinum and semiconductor (SnO2) electrodes. The light‐induced primary charge separation which occurs across the biological complex couples electrically with the SnO2 but not with the metal electrode on the time scale of observation. As the working electrode in a two‐electrode photoelectrochemical cell, RC‐coated SnO2 generated photovoltages as high as 80 mV and photocurrents as high as 0.5µA·cm2 when exposed to light of λ >600nm. The number of quinone molecules per RC strongly influences the photovoltage and photocurrent observed. Photo‐effects generated by RC electrodes persist after several days of storage; however, the kinetics and polarity of the effects are subject to change. The potential use of RC electrodes lies more as a new probe of photosynthetic electron transport rather than as a solar energy conversion device because modification to the RCs and their environment affect the electrical properties of the cell. An energy‐level model is proposed to explain how the photoelectrochemical cell functions.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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