Ultrafast photoinduced electron transfer in coumarin 343 sensitized TiO2-colloidal solution

Photoinduced electron transfer from organic dye molecules to semiconductor nanoparticles is the first and most important reaction step for the mechanism in the so called “wet solar cells” [1]. The time scale between the 
Photoinduced electron transfer from organic dye molecules to semiconductor nanoparticles is the first and most important reaction step for the mechanism in the so called “wet solar cells” [1]. The time scale between the photoexcitation of the dye and the electron injection into the conduction band of the
semiconductor colloid varies from a few tens of femtoseconds to nanoseconds, depending on the specific electron transfer parameters of the system, e.g., electronic coupling or free energy values of donor and acceptor molecules [2–10]. We show that visible pump/ white light probe is a very efficient tool to investigate the electron injection reaction allowing to observe simultaneously the relaxation of the excited dye, the injection process of the electron, the cooling of the injected electron and the charge recombination reaction.
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Metadaten
Author:Josef Wachtveitl, Robert Huber, Sebastian Spörlein, Jacques E. Moser, Michael Grätzel
URN:urn:nbn:de:hebis:30:3-249978
DOI:http://dx.doi.org/doi:10.1155/S1110662X99000264
ISSN:1687-529X
ISSN:1110-662X
Parent Title (English):International journal of photoenergy
Publisher:Hindawi Publ. Corp.
Place of publication:New York, NY [u.a.]
Document Type:Article
Language:English
Year of first Publication:1999
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2012/06/08
Volume:1
Pagenumber:3
First Page:1
Last Page:3
HeBIS PPN:357340558
Institutes:Biochemie und Chemie
Dewey Decimal Classification:540 Chemie und zugeordnete Wissenschaften
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 3.0

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