@article{23ebd8265025408aa6205ad7c216d914,
title = "Optically induced electron transfer from conjugated organic molecules to charged metal clusters",
abstract = "The formation of small gold clusters at the initial stage of the metal growth on a thin film of the conjugated organic semiconductor diindenoperylene (DIP) leads to charging during ultraviolet photoemission spectroscopy (UPS) investigations. Additional irradiation of the sample with visible light was successfully applied to re-establish charge neutrality on the sample surface. By varying the light energy, we demonstrate that the optical formation of excitons and/or polarons results in efficient electron transfer from DIP to the positively charged Au clusters and thus the elimination of charging in UPS. This allows the collection of reliable information on the interface electronic structure.",
keywords = "Charging, Gold, Organic semiconductors, Photoelectron spectroscopy",
author = "N. Koch and D{\"u}rr, {A. C.} and J. Ghijsen and Johnson, {R. L.} and Pireaux, {J. J.} and Jeffrey Schwartz and F. Schreiber and H. Dosch and Antoine Kahn",
note = "Funding Information: The synchrotron work was supported by the IHP-Contract HPRI-CT-1999-00040 of the European Commission. We acknowledge financial support of the Interuniversity Research Projects (PAI/IUA) on {\textquoteleft}Sciences of Interfacial and Mesoscopic Structures{\textquoteright} sponsored by the Belgian Prime Minister's Office (Federal Services for Scientific, Technical and Cultural Affairs). Partial support by the NSF (DMR-097133) and the New Jersey Center for Organic OptoElectronics is gratefully acknowledged. F.S. acknowledges support from the DFG within the focus program {\textquoteleft}Organizche Feldeffekt-Transistoren{\textquoteright}. R.L.J. acknowledges financial support from the Bundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie (BMBF) Project No. 05 KS1GUC/3. J.G. acknowledges support by the NFSR (Belgium). We would like to thank N. Karl and S. Hirschmann of Stuttgart University for purifying DIP, and J. Kuhl of the Max-Planck-Institute for Solid State Research, Stuttgart, for providing the optical filters. B. Lemke and H. Habermeier of the of the Max-Planck-Institute for Solid State Research, Stuttgart, are gratefully acknowledged for fabricating the substrates.",
year = "2003",
month = sep,
day = "22",
doi = "10.1016/S0040-6090(03)00925-8",
language = "English (US)",
volume = "441",
pages = "145--149",
journal = "Thin Solid Films",
issn = "0040-6090",
publisher = "Elsevier",
number = "1-2",
}