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Trions, Exciton Dynamics and Spectral Modifications in Doped Carbon Nanotubes: A Singular Defect-Driven Mechanism
Klaus H. Eckstein, Pascal Kunkel, Markus Voelckel +2
Doping substantially influences the electronic and photophysical properties of semiconducting single-wall carbon nanotubes (s-SWNTs). Although prior studies have noted that surplus…
Quantifying Doping Levels in Carbon Nanotubes by Optical Spectroscopy
Klaus H. Eckstein, Florian Oberndorfer, Melanie M. Achsnich +2
Controlling doping is essential for a successful integration of semiconductor materials into device technologies. However, the assessment of doping levels and the distribution of c…
Excitation and recombination dynamics of vacancy-related spin centers in silicon carbide
T. C. Hain, F. Fuchs, V. A. Soltamov +4
We generate silicon vacancy related defects in high-quality epitaxial silicon carbide layers by means of electron irradiation. By controlling the irradiation fluence, the defect co…
Intersubband decay of 1-D exciton resonances in carbon nanotubes
Tobias Hertel, Vasili Perebeinos, Jared Crochet +3
We have studied intersubband decay of E22 excitons in semiconducting carbon nanotubes experimentally and theoretically. Photoluminescence excitation line widths of semiconducting n…
The interlayer cohesive energy of graphite from thermal desorption of polyaromatic hydrocarbons
Renju Zacharia, Hendrik Ulbricht, Tobias Hertel
We have studied the interaction of polyaromatic hydrocarbons (PAHs) with the basal plane of graphite using thermal desorption spectroscopy. Desorption kinetics of benzene, naphthal…
Temperature Dependence of Electron to Lattice Energy-Transfer in Single-Wall Carbon Nanotube Bundles
G. Moos, R. Fasel, T. Hertel
The electron-phonon coupling strength in single-wall carbon nanotube (SWNT) bundles has been studied directly in the time-domain by femtosecond time-resolved photoelectron spectros…