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2 results on '"Stefan Neppl"'

1. Real-time probing of charge-transfer induced interfacial fields in a dye-semiconductor system using time-resolved XPS

Author

Friedrich Roth, Oliver Gessner, Nils Huse, Andrey Shavorskiy, Stefan Neppl, Hendrik Bluhm, Wolfgang Eberhardt, and Johannes Mahl

Subjects
Materials science, 010308 nuclear & particles physics, business.industry, Physics, QC1-999, Charge (physics), 01 natural sciences, Nanocrystalline material, Semiconductor, X-ray photoelectron spectroscopy, Chemical physics, Picosecond, 0103 physical sciences, Charge carrier, Transient (oscillation), 010306 general physics, business
Abstract

Photo-induced charge carrier dynamics and transient interfacial fields at the interface between N3 polypyridine complexes and films of nanocrystalline ZnO are probed by picosecond time-resolved X-ray photoelectron spectroscopy.

Published
2019

2. Decomposing electronic and lattice contributions in optical pump-X-ray probe transient inner-shell absorption spectroscopy of CuO

Author

Hendrik Bluhm, Friedrich Roth, Wolfgang Eberhardt, Jinghua Guo, Johannes Mahl, Wanli Yang, Huse Nils, Catherine Saladrigas, Stefan Neppl, and Oliver Gessner

Subjects
Materials science, Absorption spectroscopy, 010308 nuclear & particles physics, Physics, QC1-999, X-ray, Physics::Optics, Laser, 01 natural sciences, Molecular physics, law.invention, Optical pumping, law, Picosecond, Lattice (order), 0103 physical sciences, Inner shell, 010306 general physics, Excitation
Abstract

Electronic and lattice contributions to transient X-ray absorption spectra of CuO are analyzed using picosecond time-resolved and temperature-dependent measurements. Super-bandgap excitation with 355 nm and 532 nm laser pulses leads to significantly different trends.

Published
2019

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