Klaus Götz
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View article: Identification of polytypism and their dislocations in bilayer MoS2 using correlative transmission electron microscopy and Raman spectroscopy
Identification of polytypism and their dislocations in bilayer MoS2 using correlative transmission electron microscopy and Raman spectroscopy Open
Stacking orders and topological defects substantially influence the physical properties of 2D van der Waals (vdW) materials. However, the inherent features of 2D materials challenge the effectiveness of single characterization techniques i…
View article: Identification of Polytypism and Their Dislocations in Bilayer MoS2 Using Correlative Transmission Electron Microscopy and Raman Spectroscopy
Identification of Polytypism and Their Dislocations in Bilayer MoS2 Using Correlative Transmission Electron Microscopy and Raman Spectroscopy Open
Stacking orders and topological defects substantially influence the physical properties of 2D van der Waals (vdW) materials. However, the inherent features of 2D materials challenge the effectiveness of single characterization techniques i…
View article: Anchoring ligand engineering enables highly stable MA-free perovskite solar cells with a minimal <i>V</i><sub>OC</sub> deficit of 0.32 V
Anchoring ligand engineering enables highly stable MA-free perovskite solar cells with a minimal <i>V</i><sub>OC</sub> deficit of 0.32 V Open
Ligand engineering is an effective method to reduce defects in perovskite solar cells (PSCs) and to enhance efficiency.
View article: Nucleation Behavior of SnS<sub>2</sub> on Thiol Functionalized SAMs During Solution‐Based Atomic Layer Deposition
Nucleation Behavior of SnS<sub>2</sub> on Thiol Functionalized SAMs During Solution‐Based Atomic Layer Deposition Open
Solution‐based atomic layer deposition (sALD) is an emerging technique that transfers the principle of traditional atomic layer deposition (ALD) from the gas phase into a wet chemical environment. This new preparation technique has new and…
View article: Squeezing the Threshold of Metal‐Halide Perovskite Micro‐Crystal Lasers Grown by Solution Epitaxy
Squeezing the Threshold of Metal‐Halide Perovskite Micro‐Crystal Lasers Grown by Solution Epitaxy Open
Metal halide perovskite semiconductors have demonstrated remarkable progress not only in photovoltaics and X‐ray detection but also in laser technologies. Particularly appealing is the simplicity with which micro‐crystallites can be epitax…
View article: SAXS/PCS study on the mesoscopic structure of lipid nanoparticle (LNP) formulations for mRNA drug delivery: Comirnaty and drug-free LNP dispersions
SAXS/PCS study on the mesoscopic structure of lipid nanoparticle (LNP) formulations for mRNA drug delivery: Comirnaty and drug-free LNP dispersions Open
Lipid Nanoparticles (LNPs) produced by anti-solvent precipitation (ASP) are used in formulations for mRNA drug delivery. The mesoscopic structure of such complex multicomponent and polydisperse nanoparticulate systems is most relevant for …
View article: Highly Stable Lasing from Solution‐Epitaxially Grown Formamidinium‐Lead‐Bromide Micro‐Resonators
Highly Stable Lasing from Solution‐Epitaxially Grown Formamidinium‐Lead‐Bromide Micro‐Resonators Open
High‐quality epitaxial growth of oriented microcrystallites on a semiconductor substrate is demonstrated here for formamidinium lead bromide perovskite, by drop casting of precursor solutions in air. The microcrystallites exhibit green pho…
View article: Investigating Growth of Gold Nanorods by Simultaneous Small‐Angle X‐Ray and Neutron Scattering
Investigating Growth of Gold Nanorods by Simultaneous Small‐Angle X‐Ray and Neutron Scattering Open
Increased usage of gold nanorods (AuNRs) in various biosensing and medical applications requires tight size and morphology control. This is often achieved by tuning the aggregation behavior of the stabilizing ligand cetrimonium bromide (CT…
View article: Simultaneous SAXS/SANS Method at D22 of ILL: Instrument Upgrade
Simultaneous SAXS/SANS Method at D22 of ILL: Instrument Upgrade Open
A customized portable SAXS instrument has recently been constructed, installed, and tested at the D22 SANS instrument at ILL. Technical characteristics of this newly established plug-and-play SAXS system have recently been reported (J. App…
View article: Hydrogenated anatase TiO<sub>2</sub> single crystals: defects formation and structural changes as microscopic origin of co-catalyst free photocatalytic H<sub>2</sub> evolution activity
Hydrogenated anatase TiO<sub>2</sub> single crystals: defects formation and structural changes as microscopic origin of co-catalyst free photocatalytic H<sub>2</sub> evolution activity Open
A model identifying defects formation and structural as well as chemical changes as crucial parameters for a co-catalyst free photocatalytic H 2 evolution activity in epitaxial grown anatase single crystals is presented.
View article: Unraveling Complexity: A Strategy for the Characterization of Anisotropic Core Multishell Nanoparticles
Unraveling Complexity: A Strategy for the Characterization of Anisotropic Core Multishell Nanoparticles Open
In this work, a widely applicable routine to characterize the core, surface, stability, and optical properties of CdSe/CdS/ZnS core–shell–shell nanorods after multiple growth steps is established. First, size, shape, and shell thickness of…
View article: Epitaxial Metal Halide Perovskites by Inkjet‐Printing on Various Substrates
Epitaxial Metal Halide Perovskites by Inkjet‐Printing on Various Substrates Open
Metal‐halide‐perovskites revolutionized the field of thin‐film semiconductor technology, due to their favorable optoelectronic properties and facile solution processing. Further improvements of perovskite thin‐film devices require structur…
View article: A novel experimental approach for nanostructure analysis: simultaneous small-angle X-ray and neutron scattering
A novel experimental approach for nanostructure analysis: simultaneous small-angle X-ray and neutron scattering Open
Exploiting small-angle X-ray and neutron scattering (SAXS/SANS) on the same sample volume at the same time provides complementary nanoscale structural information in two different contrast situations. Unlike an independent experimental app…
View article: A Novel Experimental Approach for Nanostructure Analysis: Simultaneous Small Angle X-ray and Neutron Scattering (SAXS/SANS)
A Novel Experimental Approach for Nanostructure Analysis: Simultaneous Small Angle X-ray and Neutron Scattering (SAXS/SANS) Open
Exploiting small angle X-ray and neutron scattering (SAXS/SANS) on the same sample volume at the same time provides complementary nanoscale structural information at two different contrast situations. Compared with an independent experimen…