A5103088829- Photonic and Optical Devices
- Surface Chemistry and Catalysis
- Experimental Learning in Engineering
- Machine Learning in Materials Science
- Graphene research and applications
- Force Microscopy Techniques and Applications
- Quantum Dots Synthesis And Properties
- Surface and Thin Film Phenomena
- Semiconductor Lasers and Optical Devices
- Molecular Junctions and Nanostructures
- Climate change and permafrost
- 2D Materials and Applications
- nanoparticles nucleation surface interactions
- X-ray Diffraction in Crystallography
- Advanced MEMS and NEMS Technologies
- Advanced Optical Sensing Technologies
- Antioxidant Activity and Oxidative Stress
- Advanced X-ray Imaging Techniques
- Semiconductor materials and devices
- Enzyme Structure and Function
- ZnO doping and properties
- Advanced Chemical Physics Studies
- Chalcogenide Semiconductor Thin Films
- Conducting polymers and applications
- Electrowetting and Microfluidic Technologies
Friedrich Schiller University Jena
2019-2024
Helmholtz Institute Jena
2019-2022
GIDVis is a software package based on MATLAB specialized for, but not limited to, the visualization and analysis of grazing-incidence thin-film X-ray diffraction data obtained during sample rotation around surface normal. allows user to perform detector calibration, stitching, intensity corrections, standard evaluation (e.g. cuts integrations along specific reciprocal-space directions), crystal phase etc. To take full advantage measured in case rotation, pole figures can easily be calculated...
The fabrication of nanomaterials involves self-ordering processes functional molecules on inorganic surfaces. To obtain specific molecular arrangements, a common strategy is to equip with groups. However, focusing the groups alone does not provide comprehensive picture. Especially at interfaces, that govern are complex and involve various physical chemical effects, often leading unexpected structures, as we showcase here example homologous series quinones Ag(111). Naively, one could expect...
2D materials such as hexagonal boron nitride (h-BN) are widely used to decouple organic molecules from metal substrates. Nevertheless, there also indications in the literature for a significant hybridization, which results perturbation of intrinsic molecular properties. In this work we study electronic and optical properties well lateral structure tetraphenyldibenzoperiflanthene (DBP) on Ni(111) with without an atomically thin h-BN interlayer investigate its possible decoupling effect. To...
The formation of unknown polymorphs due to the crystallization at a substrate surface is frequently observed. This phenomenon much less studied for epitaxially grown molecular crystals since unambiguous proof new polymorph challenging task. existence multiple epitaxial alignments crystallites together with simultaneous presence different does not allow simple phase identification. We present grazing incidence X-ray diffraction studies on conjugated molecules like perylenetetracarboxylic...
Blue phosphorene (BlueP) is considered as a promising two-dimensional (2D) material for future-(opto)electronic applications. Monolayer BlueP often fabricated on Au(111) single-crystal surfaces. It has been suggested that small P domains form lateral network with Au adatoms. Previous studies attempting to use BlueP/Au(111) substrate the deposition of fullerene indicated former susceptible structural deterioration, unlike most other 2D materials in this regard. Here, we investigate...
Crystal structure identification of thin organic films entails a number technical and methodological challenges. In particular, if molecular crystals are epitaxially grown on single-crystalline substrates complex scenario multiple preferred orientations the adsorbate, several symmetry-related in-plane alignments occurrence unknown polymorphs is frequently observed. theory, parameters reduced unit cell its orientation can simply be obtained from matrix three linearly independent...
Structural templating with homogeneous template layers is one of the strategies for controlling orientation small molecular absorbers in photoactive layer an organic solar cell to increase its power conversion efficiency. A main challenge thereby energetic alignment molecules and charge-transporting materials. In present study, effects a cluster-like ellagic acid (EA) on morphology optical properties side-chain-substituted dicyanovinyl quaterthiophene (DCV4T-Et2) thin films are discussed....
Ellagic acid (EA), an antioxidant from fruits or other plants, has recently evoked interest in the field of organic electronics because its weak electron donor properties. In this work, preparation uniaxial π-stacked EA films by thermal evaporation on different surfaces is reported for first time. The (102) lattice plane π-electron system was confirmed as contact one monolayer equivalent Ag(111) low-electron energy diffraction. X-ray and atomic force microscopy measurements revealed...
An indispensable part of the structure determination crystalline two-dimensional (2D) materials and epitaxial thin films is correct indexing acquired diffraction patterns. In our previous work, we described an effective algorithm to determine 3D unit-cell parameters complex systems comprising different orientations polymorphs. this adapt method 2D lattices in reciprocal space. Analyzing low-energy electron Fourier-transformed scanning tunneling microscopy measurements, exemplarily applied...
1 Max Planck School of Photonics, Friedrich Schiller University Jena (GERMANY)2 Abbe (GERMANY)3 Fakultät Medizin, Health and Medical Erfurt (GERMANY)4 Institute Applied Physics, (GERMANY)
While the crystal structure of polymorph phase can be studied in three dimensions conveniently by X-ray methods like grazing-incidence diffraction (GIXD), first monolayer is only accessible surface-sensitive that allow determination a two-dimensional lattice. Here, GIXD measurements with sample rotation are compared distortion-corrected low-energy electron (LEED) experiments on conjugated molecules: 3,4;9,10-perylenetetracarboxylic dianhydride (PTCDA), 6,13-pentacenequinone (P2O),...
The epitaxial growth of molecular crystals at single-crystalline surfaces is often strongly related to the first monolayer substrate surface. present work presents a theoretical approach compare three-dimensional lattices epitaxially grown with two-dimensional molecules formed within monolayer. Real-space and reciprocal-space representations are considered. Depending on crystallographic orientation relative surface, proper linear combinations lattice vectors unit cell result in rhomboid xy...
1 Institute of Applied Physics, Friedrich Schiller University Jena (GERMANY)2 Abbe Center Photonics, (GERMANY)
LAB BUDDY SYSTEM FOR HYBRID PRACTICAL TRAINING AND THE INTEGRATION OF ONLINE STUDENTS INTO STUDENT COMMUNITY
Appears in: EDULEARN22 Proceedings Publication year: 2022Page: 5915 (abstract only)ISBN: 978-84-09-42484-9ISSN: 2340-1117doi: 10.21125/edulearn.2022.1388Conference name: 14th International Conference on Education and New Learning TechnologiesDates: 4-6 July, 2022Location: Palma, Spain
1 Abbe Center of Photonics, Friedrich Schiller University Jena (GERMANY)2 Institute Applied Physics, (GERMANY)
1 Abbe Center of Photonics, Friedrich Schiller University Jena (GERMANY)2 Institute Applied Physics, (GERMANY)
MULTIPLE CAMERA VIDEO CONFERENCE SYSTEM FOR HYBRID PRACTICAL TRAINING AND THE INTEGRATION OF ONLINE STUDENTS INTO STUDENT COMMUNITY