68 citations · 155 across the 10 of their papers we have counts for
11 papers
Prospects for Direct Electron Detectors in Ultrafast Electron Diffraction and Scattering Experiments
Laurenz Kremeyer, David Cai, Malik Lahlou +3
Ultrafast electron diffraction and phonon-diffuse scattering [UED(S)] experiments make use of photo-induced changes to electron scattering intensity across 2D detectors to report o…
Competing excitonic couplings as origin of mimicked phase transitions in zinc-phthalocyanine single crystals
Lisa Schraut-May, Sebastian Hammer, Luca Nils Philipp +9
The optical properties of molecular crystals are largely determined by the excitonic coupling of neighboring molecules. This coupling is extremely sensitive to the arrangement of a…
Unveiling the Role of Solvents in DBTTF:HATCN Ternary Cocrystals
Ana M. Valencia, Lisa Schraut-May, Marie Siegert +7
Donor-acceptor (D:A) cocrystals offer a promising platform for next-generation optoelectronic applications, but the impact of residual solvent molecules on their properties remains…
How to Fix Silver for Plasmonics
Björn Ewald, Leo Siebigs, Cheng Zhang +9
Silver (Ag) is considered an ideal material for plasmonic applications in the visible wavelength regime due to its superior optical properties, but its use is limited by the poor c…
Frontier orbitals control dynamical disorder in molecular semiconductors
Alexander Neef, Sebastian Hammer, Yuxuan Yao +11
Charge transport in organic semiconductors is limited by dynamical disorder. Design rules for new high-mobility materials have therefore focused on limiting its two foundations: st…
Excimer Formation in Zinc-phthalocyanine Revealed using Ultrafast Electron Diffraction
Sebastian Hammer, Tristan L. Britt, Laurenz Kremeyer +4
The formation of excited dimer states, so called excimers, is an important phenomenon in many organic molecular semiconductors. In contrast to Frenkel exciton-polaron excited state…
Surface doping of rubrene single crystals by molecular electron donors and acceptors
Christos Gatsios, Andreas Opitz, Dominique Lungwitz +9
The surface molecular doping of organic semiconductors can play an important role in the development of organic electronic or optoelectronic devices. Single-crystal rubrene remains…
Spectroscopic analysis of vibrational coupling in multi-molecular excited states
Sebastian Hammer, Theresa Linderl, Kristofer Tvingstedt +2
Multi-molecular excited states accompanied by an intra- and inter-molecular geometric relaxation are commonly encountered in optical and electrooptical studies and applications of…
Orbital-resolved Observation of Singlet Fission
Alexander Neef, Samuel Beaulieu, Sebastian Hammer +8
Singlet fission may boost photovoltaic efficiency [by transforming a singlet exciton into two triplet excitons and thereby doubling the number of excited charge carriers. The prima…
Nuclear dynamics of singlet exciton fission: a direct observation in pentacene single crystals
Hélène Seiler, Marcin Krynski, Daniela Zahn +7
Singlet exciton fission (SEF) is a key process in the development of efficient opto-electronic devices. An aspect that is rarely probed directly, and yet has a tremendous impact on…
Scalable Transfer-Free Fabrication of MoS/SiO Hybrid Nanophotonic Cavity Arrays with Quality Factors Exceeding 4000
Sebastian Hammer, Hans-Moritz Mangold, Ariana E. Nguyen +4
We report the fully-scalable fabrication of a large array of hybrid molybdenum disulfide (MoS) - silicon dioxide (SiO) one-dimensional, free-standing photonic-crystal cavit…