13 Result(s)
within
Christoph Schnedermann
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Article
Open AccessDecoupling excitons from high-frequency vibrations in organic molecules
The coupling of excitons in π-conjugated molecules to high-frequency vibrational modes, particularly carbon–carbon stretch modes (1,000–1,600 cm−1) has been thought to be unavoidable1,2. These high-frequency mode...
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Open AccessHole-limited electrochemical do** in conjugated polymers
Simultaneous transport and coupling of ionic and electronic charges is fundamental to electrochemical devices used in energy storage and conversion, neuromorphic computing and bioelectronics. While the mixed c...
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Photosynthesis re-wired on the pico-second timescale
Photosystems II and I (PSII, PSI) are the reaction centre-containing complexes driving the light reactions of photosynthesis; PSII performs light-driven water oxidation and PSI further photo-energizes harveste...
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Operando monitoring of single-particle kinetic state-of-charge heterogeneities and cracking in high-rate Li-ion anodes
To rationalize and improve the performance of newly developed high-rate battery electrode materials, it is crucial to understand the ion intercalation and degradation mechanisms occurring during realistic batt...
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Open AccessDirect observation of ultrafast singlet exciton fission in three dimensions
We present quantitative ultrafast interferometric pump-probe microscopy capable of tracking of photoexcitations with sub-10 nm spatial precision in three dimensions with 15 fs temporal resolution, through retr...
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Open AccessExtracting quantitative dielectric properties from pump-probe spectroscopy
Optical pump-probe spectroscopy is a powerful tool for the study of non-equilibrium electronic dynamics and finds wide applications across a range of fields, from physics and chemistry to material science and ...
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Open AccessMicrocavity-like exciton-polaritons can be the primary photoexcitation in bare organic semiconductors
Strong-coupling between excitons and confined photonic modes can lead to the formation of new quasi-particles termed exciton-polaritons which can display a range of interesting properties such as super-fluidit...
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Operando optical tracking of single-particle ion dynamics in batteries
The key to advancing lithium-ion battery technology—in particular, fast charging—is the ability to follow and understand the dynamic processes occurring in functioning materials under realistic conditions, in ...
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Long-range ballistic propagation of carriers in methylammonium lead iodide perovskite thin films
The performance of semiconductor devices is fundamentally governed by charge-carrier dynamics within the active materials1–6. Although advances have been made towards understanding these dynamics under steady-sta...
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Open AccessA molecular movie of ultrafast singlet fission
The complex dynamics of ultrafast photoinduced reactions are governed by their evolution along vibronically coupled potential energy surfaces. It is now often possible to identify such processes, but a detaile...
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Shaky lattices for light–matter interactions
Impulsive Raman spectroscopy reveals how atoms are pushed into action by light absorption. The surprising sensitivity of this behaviour to the polaronic character of 2D perovskites opens up new avenues for tai...
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Open AccessWide-Field Detected Fourier Transform CARS Microscopy
We present a wide-field imaging implementation of Fourier transform coherent anti-Stokes Raman scattering (wide-field detected FT-CARS) microscopy capable of acquiring high-contrast label-free but chemically s...
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Evidence for conical intersection dynamics mediating ultrafast singlet exciton fission
Singlet exciton fission is the process in organic semiconductors through which a spin-singlet exciton converts into a pair of spin-triplet excitons residing on different chromophores, entangled in an overall s...
