Journalartikel

Jahr der Veröffentlichung: 2010

Seiten: 102-108

Zeitschrift: Chemical Physics Letters

Bandnummer: 495

Heftnummer: 1-3

ISSN: 0009-2614

DOI Link: https://doi.org/10.1016/j.cplett.2010.06.063

Verlag: Elsevier

Abstract: 
Diamondoids are nanometer-sized, hydrogen terminated diamond-like molecules consisting of fused adamantane units. The thiolated diamondoid [121] tetramantane-6-thiol shows negative electron affinity behavior, i.e. population of unoccupied states directly leads to spontaneous electron emission. We present time-resolved photoemission data from self-assembled monolayers of [121] tetramantane-6-thiol in order to shed light on the emission process: A photon energy threshold for electron emission of 5.6-5.8 eV was observed, and the electron affinity was estimated to be -0.21 to -0.57 eV for Ag and Au substrates, respectively. Electrons are emitted after excitation in the metal substrate through the molecular orbitals within a few femtoseconds. (C) 2010 Elsevier B.V. All rights reserved.

Harvard-Zitierstil: Roth, S., Leuenberger, D., Osterwalder, J., Dahl, J., Carlson, R., Tkachenko, B., et al. (2010) Negative-electron-affinity diamondoid monolayers as high-brilliance source for ultrashort electron pulses, Chemical Physics Letters, 495(1-3), pp. 102-108. https://doi.org/10.1016/j.cplett.2010.06.063

APA-Zitierstil: Roth, S., Leuenberger, D., Osterwalder, J., Dahl, J., Carlson, R., Tkachenko, B., Fokin, A., Schreiner, P., & Hengsberger, M. (2010). Negative-electron-affinity diamondoid monolayers as high-brilliance source for ultrashort electron pulses. Chemical Physics Letters. 495(1-3), 102-108. https://doi.org/10.1016/j.cplett.2010.06.063