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 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.
| Author: | Josef WachtveitlORCiDGND, Robert HuberORCiDGND, Sebastian SpörleinGND, Jacques E. Moser, Michael Grätzel |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-249978 |
| DOI: | https://doi.org/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 |
| Date of Publication (online): | 2012/06/08 |
| Year of first Publication: | 1999 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2012/06/08 |
| Volume: | 1 |
| Page Number: | 3 |
| First Page: | 1 |
| Last Page: | 3 |
| HeBIS-PPN: | 357340558 |
| Institutes: | Biochemie, Chemie und Pharmazie / Biochemie und Chemie |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 54 Chemie / 540 Chemie und zugeordnete Wissenschaften |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 3.0 |
