F
Frédéric Joucken
Researcher at University of California, Santa Cruz
Publications - 42
Citations - 1018
Frédéric Joucken is an academic researcher from University of California, Santa Cruz. The author has contributed to research in topics: Graphene & Scanning tunneling microscope. The author has an hindex of 16, co-authored 40 publications receiving 791 citations. Previous affiliations of Frédéric Joucken include Université de Namur & Lawrence Berkeley National Laboratory.
Papers
More filters
Journal ArticleDOI
Localized state and charge transfer in nitrogen-doped graphene
Frédéric Joucken,Yann Tison,Jérôme Lagoute,J. Dumont,Damien Cabosart,Bing Zheng,V. Repain,Cyril Chacon,Yann Girard,Andrés R. Botello-Méndez,S. Rousset,Robert Sporken,Jean-Christophe Charlier,Luc Henrard +13 more
TL;DR: In this article, the simple substitution of carbon with nitrogen atoms has been identified as the most common doping configuration, indicating a reduction of local charge density on top of the nitrogen atoms and a charge transfer to the neighboring carbon atoms.
Journal ArticleDOI
Charge transfer and electronic doping in nitrogen-doped graphene
Frédéric Joucken,Yann Tison,Patrick Le Fèvre,Antonio Tejeda,A. Taleb-Ibrahimi,Edward H. Conrad,Vincent Repain,Cyril Chacon,Amandine Bellec,Yann Girard,Sylvie Rousset,Jacques Ghijsen,Robert Sporken,Hakim Amara,François Ducastelle,Jérôme Lagoute +15 more
TL;DR: The comparison between tunneling and angle-resolved photoelectron spectra reveals the spatial inhomogeneity of the Dirac energy shift and that a phonon correction has to be applied to the tunneling measurements, and XPS data demonstrate the dependence of the N 1s binding energy of graphitic nitrogen on the nitrogen concentration.
Journal ArticleDOI
Electronic Interaction between Nitrogen Atoms in Doped Graphene
Yann Tison,Jérôme Lagoute,Vincent Repain,Cyril Chacon,Yann Girard,Sylvie Rousset,Frédéric Joucken,Dimpy Sharma,Luc Henrard,Hakim Amara,Ahmed Ghedjatti,François Ducastelle +11 more
TL;DR: In this report, the structural and electronic properties of complex doping sites in nitrogen-doped graphene have been investigated by means of scanning tunneling microscopy and spectroscopy, supported by density functional theory and tight-binding calculations.
Journal ArticleDOI
Electronic interaction between nitrogen-doped graphene and porphyrin molecules.
Van Dong Pham,Jérôme Lagoute,Ouafi Mouhoub,Frédéric Joucken,V. Repain,Cyril Chacon,Amandine Bellec,Yann Girard,S. Rousset +8 more
TL;DR: These data show how the presence of nitrogen atoms in the graphene network modifies the electronic interaction of organic molecules with graphene, providing a basic understanding for the exploitation of doped graphene in molecular sensors or nanoelectronics.
Journal ArticleDOI
A setup for extreme-ultraviolet ultrafast angle-resolved photoelectron spectroscopy at 50-kHz repetition rate.
J. Buss,He Wang,Yiming Xu,Julian Maklar,Frédéric Joucken,L. K. Zeng,Sebastian Stoll,Chris Jozwiak,John Pepper,Yi-De Chuang,Jonathan D. Denlinger,Zahid Hussain,Alessandra Lanzara,Robert A. Kaindl +13 more
TL;DR: In this article, the authors present a setup for trARPES with 22.3 eV femtosecond pulses at 50-kHz repetition rate, which enables fast data acquisition and access to dynamics across momentum space with high sensitivity.