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1.	Hyland, Paul, et al. (author) Nonagenarians from the Swedish NONA Immune Study have increased plasma antioxidant capacity and similar levels of DNA damage in peripheral blood mononuclear cells compared to younger control subjects 2002 In: Experimental Gerontology. - 0531-5565 .- 1873-6815. ; 37:2-3, s. 465-473 Journal article (peer-reviewed)
2.	Joint, Ian, et al. (author) Cell-to-cell communication across the prokaryote-eukaryote boundary 2002 In: Science. - : American Association for the Advancement of Science (AAAS). - 0036-8075 .- 1095-9203. ; 298:5596, s. 1207-1207 Journal article (peer-reviewed)
3.	Schnadt, Joachim, et al. (author) Experimental evidence for sub-3-fs charge transfer from an aromatic adsorbate to a semiconductor 2002 In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 418:6898, s. 620-623 Journal article (peer-reviewed)abstract The ultrafast timescale of electron transfer processes is crucial to their role in many biological systems and technological devices. In dye-sensitized solar cells(1-4), the electron transfer from photoexcited dye molecules to nanostructured semiconductor substrates needs to be sufficiently fast to compete effectively against loss processes and thus achieve high solar energy conversion efficiencies(4). Time-resolved laser techniques indicate an upper limit of 20 to 100 femtoseconds(5-9) for the time needed to inject an electron from a dye into a semiconductor, which corresponds to the timescale on which competing processes such as charge redistribution(10,11) and intramolecular thermalization of excited states(12-14) occur. Here we use resonant photoemission spectroscopy, which has previously been used to monitor electron transfer in simple systems with an order-of-magnitude improvement in time resolution(15,16), to show that electron transfer from an aromatic adsorbate to a TiO2 semiconductor surface can occur in less than 3 fs. These results directly confirm that electronic coupling of the aromatic molecule to its substrate is sufficiently strong to suppress competing processes(17).
4.	Schnadt, Joachim, et al. (author) Experimental evidence for sub-3-fs charge transfer from an aromatic adsorbate to a semiconductor 2002 In: Nature. - 0028-0836. ; 418:6898, s. 620-623 Journal article (peer-reviewed)abstract The ultrafast timescale of electron transfer processes is crucial to their role in many biological systems and technological devices. In dye-sensitized solar cells(1-4), the electron transfer from photoexcited dye molecules to nanostructured semiconductor

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Type of publication: journal article (4)

Type of content: peer-reviewed (4)

Author/Editor: Persson, Petter (2); Mårtensson, Nils (2); Siegbahn, Hans (2); Odelius, Michael (2); Schnadt, Joachim (2); Lunell, Sten (2); show more...; O'Shea, James N. (2); Patthey, Luc (2); Södergren, Sven (2); Brühwiler, Paul A. (2); Ahuja, Rajeev (1); Karis, Olof (1); Milton, Debra L. (1); Johansson, Boo (1); Wikby, Anders (1); Cámara, Miguel (1); Williams, Paul (1); Tompa, Andrea (1); Andersson, Margit (1); Callow, Maureen E (1); Callow, James A (1); Joint, Ian (1); Duggan, Orla (1); Hyland, Paul (1); Turbitt, Julie (1); Coulter, James (1); Barnett, Christopher (1); Barnett, Yvonne (1); Tait, Karen (1); show less...

University: Umeå University (1); Uppsala University (1); Jönköping University (1); Lund University (1)

Language: English (4)

Research subject (UKÄ/SCB): Natural sciences (2)

Year: 2002 (4)Undo refine

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