A5081966326- Perovskite Materials and Applications
- Solid-state spectroscopy and crystallography
- Glass properties and applications
- Quantum Dots Synthesis And Properties
- Thermal and Kinetic Analysis
- Chalcogenide Semiconductor Thin Films
- Optical properties and cooling technologies in crystalline materials
- Luminescence Properties of Advanced Materials
- Thermal Expansion and Ionic Conductivity
- Advanced MEMS and NEMS Technologies
- Machine Learning in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Microwave Dielectric Ceramics Synthesis
- Calibration and Measurement Techniques
- Magnesium Oxide Properties and Applications
- Advanced Photocatalysis Techniques
University of Tübingen
2019-2025
Peter the Great St. Petersburg Polytechnic University
2019
<title>Abstract</title> The preparation of perovskite solar cells from the liquid phase is a cornerstone their immense potential. However, clear relationship between precursor ink and resulting missing. Established theories, such as heterogeneous nucleation lead complex colloid formation often prove unreliable, which has led to an overreliance on heuristics. Most high-performing perovskites use additives control crystallization; role during crystallization is, however, elusive. Here, we...
Mixed-halide perovskites of the composition MAPb(BrxI1–x)3, which seem to exhibit a random and uniform distribution halide ions in absence light, segregate into bromide- iodide-rich phases under illumination. This phenomenon segregation has been widely investigated photovoltaics context since it is detrimental for material properties ultimately device performance these otherwise very attractive materials. A full understanding mechanisms driving forces remained elusive. In this work, study...
Understanding the processes of perovskite crystallization is essential for improving properties organic solar cells. In situ real-time grazing-incidence X-ray diffraction (GIXD) a key technique this task, but it produces large amounts data, frequently exceeding capabilities traditional data processing methods. We propose an automated pipeline analysis GIXD images, based on Faster R-CNN deep learning architecture object detection, modified to conform specifics scattering data. The model...
Structural properties and photophysics of layered perovskites comprising adamantyl (A) cations in A<sub>2</sub>FA<sub>n−1</sub>Pb<italic>n</italic>I<sub>3n+1</sub> (<italic>n</italic> = 1–3, FA formamidinium) composition are studied by a combination theoretical experimental techniques to unravel unique features.
Abstract Metal halide perovskites are an emerging class of crystalline semiconductors great interest for application in optoelectronics. Their properties dictated not only by their composition, but also structure and microstructure. While significant efforts dedicated to the development strategies microstructural control, significantly less is known about processes that govern formation thin films, particular context orientation. This work investigates highly oriented triple cation...
The stability of hybrid organic-inorganic halide perovskite semiconductors remains a significant obstacle to their application in photovoltaics. To this end, the use low-dimensional (LD) perovskites, which incorporate hydrophobic organic moieties, provides an effective strategy improve stability, yet often at expense performance. address limitation, supramolecular engineering noncovalent interactions between and inorganic components has shown potential by relying on hydrogen bonding...
We demonstrate a compact sample environment for the in situ study of crystallization kinetics thin films on synchrotron beamlines, featuring atmospheric control, automated deposition, spin-coating, and annealing stages. The setup is suitable studying film growth real time using grazing-incidence X-ray diffraction techniques. Humidity oxygen levels are being detected by sensors. spinning stage exhibits low vertical oscillation amplitude (∼3μm at speeds up to 10 000 rpm) can optionally be...
Metal halide perovskites are an emerging class of crystalline semiconductors great interest for application in optoelectronics. Their properties dictated not only by their composition, but also structure and microstructure. While significant efforts were dedicated to the development strategies microstructural control, significantly less is known about processes that govern formation thin films, particular context orientation. In this work, we investigate highly oriented triple cation...
Abstract In this article we present procedures of creation, verification, and application a device for contactless measurement object’s temperature in vacuum. contrast to conventional dual-wavelength pyrometers, it does not rely on spectral filtering makes use the intrinsic bandwidth parameters photodetectors. theory is capable measuring values ranging from room several thousands kelvins. The verification was performed using reference thermometer. Also, in-field measurements sample’s vacuum...