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15 papers · 1 filter
Optical read and write of spin states in organic diradicals
Rituparno Chowdhury, Petri Murto, Naitik A. Panjwani +17
Optical control and read-out of the ground state spin structure has been demonstrated for defect states in crystalline semiconductors, including the diamond NV- center, and these a…
Reversible spin-optical interface in luminescent organic radicals
Sebastian Gorgon, Kuo Lv, Jeannine Grüne +16
Molecules present a versatile platform for quantum information science, and are candidates for sensing and computation applications. Robust spin-optical interfaces are key to harne…
Understanding the Role of Non-Fullerene Acceptors Crystallinity on the Charge Transport Properties and Performance of Organic Solar Cells
Pierluigi Mondelli, Pascal Kaienburg, Francesco Silvestri +14
The active layer crystallinity has long been associated with favourable organic solar cells (OSCs) properties such as high mobility and Fill Factor. In particular, this applies to…
The critical role of the donor polymer in the stability of high-performance non-fullerene acceptor organic solar cells
Yiwen Wang, Alberto Privitera, Giacomo Londi +7
Driven by the rapid development of non-fullerene electron acceptors (NFAs), the power conversion efficiencies of organic solar cells (OSCs) have reached levels suitable for commerc…
Analysis of external and internal disorder to understand band-like transport in n-type organic semiconductors
Marc-Antoine Stoeckel, Yoann Olivier, Marco Gobbi +18
Charge transport in organic semiconductors is notoriously extremely sensitive to the presence of disorder, both internal and external (i.e. related to the interactions with the die…
Structural and dynamic disorder, not ionic trapping, controls charge transport in highly doped conducting polymers
Ian E. Jacobs, Gabriele D'Avino, Vincent Lemaur +18
Doped organic semiconductors are critical to emerging device applications, including thermoelectrics, bioelectronics, and neuromorphic computing devices. It is commonly assumed tha…
Efficient Energy Transport in an Organic Semiconductor Mediated by Transient Exciton Delocalization
Alexander J. Sneyd, Tomoya Fukui, David Palecek +15
Efficient energy transport is highly desirable for organic semiconductor (OSC) devices such as photovoltaics, photodetectors, and photocatalytic systems. However, photo-generated e…
First principles modeling of exciton-polaritons in polydiacetylene chains
Antonios M. Alvertis, Raj Pandya, Claudio Quarti +7
Exciton-polaritons in organic materials are hybrid states that result from the strong interaction of photons and the bound excitons that these materials host. Organic polaritons ho…
Freeing electrons from extrinsic and intrinsic disorder yields band-like transport in n-type organic semiconductors
Marc-Antoine Stoeckel, Yoann Olivier, Marco Gobbi +15
Charge transport in organic semiconductors is notoriously extremely sensitive to the presence of disorder, both intrinsic and extrinsic, especially for n-type materials. Intrinsic…
Lattice vibrations and dynamic disorder in two-dimensional hybrid lead-halide perovskites
Vlad Alexandru Dragomir, Stefanie Neutzner, Claudio Quarti +7
By means of non-resonant Raman spectroscopy and density functional theory calculations, we measure and assign the vibrational spectrum of two distinct two-dimensional lead-iodide p…
Phonon coherences reveal the polaronic character of excitons in two-dimensional lead-halide perovskites
Félix Thouin, David A. Valverde Chávez, Claudio Quarti +6
Hybrid organic-inorganic semiconductors feature complex lattice dynamics due to the ionic character of the crystal and the softness arising from non-covalent bonds between molecula…
Correlated electron-hole mechanism for molecular doping in organic semiconductors
Jing Li, Gabriele D'Avino, Anton Pershin +4
The electronic and optical properties of the paradigmatic F4TCNQ-doped pentacene in the low-doping limit are investigated by a combination of state-of-the-art many-body \emph{ab in…
Coherent vs Thermally Activated Singlet Exciton Fission in Acene Derivatives From First Principles Quantum Dynamics Simulations: Molecular Packing Makes the Difference
Hiroyuki Tamura, Miquel Huix-Rotllant, Irene Burghardt +2
The mechanisms underlying coherent and thermally activated singlet exciton fission in pi-stacked acene crystals are clarified based on quantum dynamics simulations parameterized ag…
Charge separation by photoexcitation in semicrystalline polymeric semiconductors: An intrinsic or extrinsic mechanism?
Francis Paquin, Gianluca Latini, Maciej Sakowicz +5
We probe charge photogeneration and subsequent recombination dynamics in neat regioregular poly(3-hexylthiophene) films over six decades in time by means of time-resolved photolumi…
Charge-transfer excitons in strongly coupled organic semiconductors
Jean-Francois Glowe, Mathieu Perrin, David Beljonne +3
Time-resolved and temperature-dependent photoluminescence measurements on one-dimensional sexithiophene lattices reveal intrinsic branching of photoexcitations to two distinct spec…