Grigory Smolentsev
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View article: A high-energy Laue X-ray emission spectrometer at the FXE instrument at the European XFEL
A high-energy Laue X-ray emission spectrometer at the FXE instrument at the European XFEL Open
The high-energy-resolution X-ray emission spectroscopy (XES) spectrometers available at the Femtosecond X-ray Experiment (FXE) instrument of the European XFEL operate in Bragg (reflective) geometry, with optimum performance in the range be…
View article: MYTHEN III: advancements in single photon counting detectors for synchrotron powder diffraction experiments
MYTHEN III: advancements in single photon counting detectors for synchrotron powder diffraction experiments Open
The single photon counting microstrip detector MYTHEN III was developed at the Paul Scherrer Institute to satisfy the increasing demands in detector performance of synchrotron radiation experiments, focusing on time-resolved and on-edge po…
View article: X-ray Spectroscopy at the SuperXAS and Debye Beamlines: from in situ to Operando
X-ray Spectroscopy at the SuperXAS and Debye Beamlines: from in situ to Operando Open
Understanding structure–performance relationships are essential for the rational design of new functional materials or in the further optimization of (catalytic) processes. Due to the high penetration depth of the radiation used, synchrotr…
View article: Ultrafast carrier dynamics and insights in defect mechanism of p-type colloidal ZnO QDs
Ultrafast carrier dynamics and insights in defect mechanism of p-type colloidal ZnO QDs Open
In this study, we place a strong emphasis on understanding the ultrafast dynamics of carrier recombination pathways in p-type ZnO, especially in the midgap region. Synthesizing and controlling the properties of p-type ZnO remains a pivotal…
View article: A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL
A setup for hard x-ray time-resolved resonant inelastic x-ray scattering at SwissFEL Open
We present a new setup for resonant inelastic hard x-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R = 0.5 m Johann-type spectrometer can be equipped with up to three crystal…
View article: Tailoring p-Type Behavior in ZnO Quantum Dots through Enhanced Sol–Gel Synthesis: Mechanistic Insights into Zinc Vacancies
Tailoring p-Type Behavior in ZnO Quantum Dots through Enhanced Sol–Gel Synthesis: Mechanistic Insights into Zinc Vacancies Open
The synthesis and control of properties of p-type ZnO is crucial for a variety of optoelectronic and spintronic applications; however, it remains challenging due to the control of intrinsic midgap (defect) states. In this study, we demonst…
View article: A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL
A set-up for Hard X-ray Time-resolved Resonant Inelastic X-ray Scattering at SwissFEL Open
We present a new set up for resonant inelastic hard X-ray scattering at the Bernina beamline of SwissFEL with energy, momentum, and temporal resolution. The compact R=0.5 m Johann-type spectrometer can be equipped with up to 3 crystal anal…
View article: Promoting Photocatalytic Activity of NH<sub>2</sub>-MIL-125(Ti) for H<sub>2</sub> Evolution Reaction through Creation of Ti<sup>III</sup>- and Co<sup>I</sup>-Based Proton Reduction Sites
Promoting Photocatalytic Activity of NH<sub>2</sub>-MIL-125(Ti) for H<sub>2</sub> Evolution Reaction through Creation of Ti<sup>III</sup>- and Co<sup>I</sup>-Based Proton Reduction Sites Open
Titanium-based metal-organic framework, NH2-MIL-125(Ti), has been widely investigated for photocatalytic applications but has low activity in the hydrogen evolution reaction (HER). In this work, we show a one-step low-cost postmodification…
View article: Tracking C–H activation with orbital resolution
Tracking C–H activation with orbital resolution Open
Transition metal reactivity toward carbon–hydrogen (C–H) bonds hinges on the interplay of electron donation and withdrawal at the metal center. Manipulating this reactivity in a controlled way is difficult because the hypothesized metal-al…
View article: Data for "Tracking C-H activation with orbital resolution"
Data for "Tracking C-H activation with orbital resolution" Open
These are the data displayed in the figures in the main text and in the Supplementary Materials of the manuscript entitled "Tracking C-H activation with orbital resolution".
View article: Data for "Tracking C-H activation with orbital resolution"
Data for "Tracking C-H activation with orbital resolution" Open
These are the data displayed in the figures in the main text and in the Supplementary Materials of the manuscript entitled "Tracking C-H activation with orbital resolution".
View article: Tracking C-H activation with orbital resolution
Tracking C-H activation with orbital resolution Open
The reactivity towards C-H bond activation of alkanes with transition metals is determined by the ability of the metal to donate and withdraw electron density in due proportion. Manipulating this reactivity in a controlled way is difficult…
View article: Atomic-Level Description of Thermal Fluctuations in Inorganic Lead Halide Perovskites
Atomic-Level Description of Thermal Fluctuations in Inorganic Lead Halide Perovskites Open
A comprehensive microscopic description of thermally induced distortions in lead halide perovskites is crucial for their realistic applications, yet still unclear. Here, we quantify the effects of thermal activation in CsPbBr3 nanocrystals…
View article: Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication
Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication Open
The "Zenodo_22-02-2022.zip" file contains a "files" folder and a jupyter notebook to plot the figures reported in the publication. The "files" folder contains several subfolders with the txt files required to plot the figures. The "XAS_sim…
View article: Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication
Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication Open
The "Zenodo_22-02-2022.zip" file contains a "files" folder and a jupyter notebook to plot the figures reported in the publication. The "files" folder contains several subfolders with the txt files required to plot the figures. The "XAS_sim…
View article: Time‐Resolved Potential‐Induced Changes in Fe/N/C‐Catalysts Studied by In Situ Modulation Excitation X‐Ray Absorption Spectroscopy
Time‐Resolved Potential‐Induced Changes in Fe/N/C‐Catalysts Studied by In Situ Modulation Excitation X‐Ray Absorption Spectroscopy Open
To advance the widespread implementation of electrochemical energy storage and conversion technologies, the development of inexpensive electrocatalysts is imperative. In this context, Fe/N/C‐materials represent a promising alternative to t…
View article: Time‐Resolved X‐Ray Spectroscopy to Study Luminophores with Relevance for OLEDs
Time‐Resolved X‐Ray Spectroscopy to Study Luminophores with Relevance for OLEDs Open
Organic light‐emitting diodes (OLEDs) are employed in innovative display technologies and have the potential to be used widely in large area lighting. Luminophores containing 4d or 5d metals are efficient in electro‐luminescent devices due…
View article: From Femtosecond Excited-State and Dissociation Dynamics to Nanosecond Reaction Kinetics: Following C-H Bond Activation with X-rays
From Femtosecond Excited-State and Dissociation Dynamics to Nanosecond Reaction Kinetics: Following C-H Bond Activation with X-rays Open
Using ultrafast X-ray absorption spectroscopy, we observe how a rhodium carbonyl catalyst is formed on femtosecond timescales and reveal the decisive orbital interactions which facilitate the efficient cleavage of an alkane C-H bond from s…
View article: Atomic-level description of thermal fluctuations in inorganic lead halide perovskites
Atomic-level description of thermal fluctuations in inorganic lead halide perovskites Open
The potential of lead-halide perovskites for realistic applications is currently hindered by their limited long-term stability under functional activation. While the role of lattice flexibility in the thermal response of perovskites has be…
View article: Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication
Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication Open
The "Zenodo_27-09-2021.zip" file contains a "files" folder and a jupyter notebook to plot the figures reported in the publication. The "files" folder contains several subfolders with the txt files required to plot the figures. The "XAS_sim…
View article: Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication
Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication Open
The "Zenodo_21-12-2021.zip" file contains a "files" folder and a jupyter notebook to plot the figures reported in the publication. The "files" folder contains several subfolders with the txt files required to plot the figures. The "XAS_sim…
View article: Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication
Dataset of "Atomic-level description of thermal fluctuations in inorganic lead halide perovskites" publication Open
The zip file contains a "files" folder and a jupyter notebook to plot the figures reported in the publication. The "files" folder contains several subfolders with the txt files required to plot the figures.
View article: Ultrafast electron localization in the EuNi2(Si0.21Ge0.79)(2) correlated metal
Ultrafast electron localization in the EuNi2(Si0.21Ge0.79)(2) correlated metal Open
Ultrafast electron delocalization induced by a femtosecond laser pulse is a well-known process in which electrons are ejected from the ions within the laser pulse duration. However, very little is known about the speed of electron localiza…
View article: Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskite Nanocrystals
Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskite Nanocrystals Open
The development of next-generation perovskite-based optoelectronic devices relies critically on the understanding of the interaction between charge carriers and the polar lattice in out-of-equilibrium conditions. While it has become increa…
View article: Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskites Nanocrystals
Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskites Nanocrystals Open
The development of next generation perovskite-based optoelectronic devices relies critically on the understanding of the interaction between charge carriers and the polar lattice in out-of-equilibrium conditions. While it has become increa…
View article: Dataset of "Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskites Nanocrystals" publication
Dataset of "Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskites Nanocrystals" publication Open
The zip file contains a ReadMe.txt file and several subfolders with: - input raw data from the synchrotron experiments, - the python scripts used in the data analysis, - the output of the python scripts (processed txt files) discussed in t…
View article: Dataset of "Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskites Nanocrystals" publication
Dataset of "Quantifying Photoinduced Polaronic Distortions in Inorganic Lead Halide Perovskites Nanocrystals" publication Open
The zip file contains a ReadMe.txt file and several subfolders with: - input raw data from the synchrotron experiments, - the python scripts used in the data analysis, - the output of the python scripts (processed txt files) discussed in t…
View article: Excited-state structure of copper phenanthroline-based photosensitizers
Excited-state structure of copper phenanthroline-based photosensitizers Open
Pump–probe XAS is used to catch the excited-state of two Cu photosensitizers and 4-coordinated excited states are observed. The exciplex can be involved in the deactivation of [Cu(dmp) 2 ] + as a non-observable state that forms slower than…