title: Time-resolved pump and probe x-ray absorption fine structure spectroscopy at beamline P11 at PETRA III.
abstract: We report about the development and implementation of a new setup for time-resolved X-ray absorption fine structure spectroscopy at beamline P11 utilizing the outstanding source properties of the low-emittance PETRA III synchrotron storage ring in Hamburg. Using a high intensity micrometer-sized X-ray beam in combination with two positional feedback systems, measurements were performed on the transition metal complex fac-Tris[2-phenylpyridinato-C2,N]iridium(III) also referred to as fac-Ir(ppy)3. This compound is a representative of the phosphorescent iridium(III) complexes, which play an important role in organic light emitting diode (OLED) technology. The experiment could directly prove the anticipated photoinduced charge transfer reaction. Our results further reveal that the temporal resolution of the experiment is limited by the PETRA III X-ray bunch length of ∼103 ps full width at half maximum (FWHM).
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Göries
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Dicke
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Roedig
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: N
authors.initials: N
authors.lastname: Stübe
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: J
authors.initials: J
authors.lastname: Meyer
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Galler
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: W
authors.initials: W
authors.lastname: Gawelda
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Britz
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: P
authors.initials: P
authors.lastname: Geßler
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Sotoudi Namin
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Beckmann
authors.affiliation: Institut für Experimentalphysik, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Schlie
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Warmer
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Naumova
authors.affiliation: European XFEL, Albert-Einstein Ring 19, 22761 Hamburg, Germany.
authors.forename: C
authors.initials: C
authors.lastname: Bressler
authors.affiliation: Center for Free-Electron Laser Science (CFEL), Luruper Chaussee 149, 22761 Hamburg, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Rübhausen
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Weckert
authors.affiliation: DESY Photon Science, Deutsches Elektronen-Synchrotron (DESY), Notkestraße 85, 22607 Hamburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Meents