A5045482467- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Solid-state spectroscopy and crystallography
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Machine Learning in Materials Science
- Organic Light-Emitting Diodes Research
- Pigment Synthesis and Properties
- Optical properties and cooling technologies in crystalline materials
- Gas Sensing Nanomaterials and Sensors
- Electronic and Structural Properties of Oxides
- Organic Electronics and Photovoltaics
- Gold and Silver Nanoparticles Synthesis and Applications
- Electrochemical Analysis and Applications
- Advanced Photocatalysis Techniques
- Magnetic and transport properties of perovskites and related materials
- Advanced Thermoelectric Materials and Devices
- Catalysis and Oxidation Reactions
- Material Science and Thermodynamics
- TiO2 Photocatalysis and Solar Cells
- Ferroelectric and Piezoelectric Materials
- Thermal Expansion and Ionic Conductivity
Lomonosov Moscow State University
2015-2025
Moscow State University
2014-2017
Gold degradation under UV-light through local formation of a reactive polyiodide melt and its rapid reaction with gold resulting in the MA<sub>2</sub>Au<sub>2</sub>I<sub>6</sub> phase.
We found for the first time a new origin of selection perovskite crystallization pathways from DMF solutions containing MAI and PbI2 to present here comprehensive study full set essential intermediate phases determining perovskite's morphology. For all three discovered structurally different forming at given precursor ratio, we refined their crystal structures by synchrotron X-ray radiation investigated dynamics phase assemblage in course decomposition. As result, revealed clear correlation...
We report a facile preparation approach of MAPbBr3, MAPbCl3, or FAPbBr3 (where MA = CH3NH3+ and FA CH(NH2)2+) perovskite nanowires via sequential synthesis MAPbI3 FAPbI3 with chemically controlled composition morphologies followed by an exchange halide anions. The formation sequence includes intermediate phases such as MAI-PbI2-DMF FAI-PbI2-DMF (DMF dimethylformamide) acting structure directing agent. 1D shape the adduct is preserved during conversion to perovskite. adducts play role key...
The new precursors MAI<sub>3+x</sub> and FAI<sub>3+x</sub> exhibit exceptionally high reactivity towards lead result in quality lead-halide perovskite films.
We proposed a simple approach for quickly identifying the dimensionality of inorganic substructures, types connections lead halide polyhedra and structure using common powder XRD data ML-decision tree classification model.
Interaction of a copper electrode with methylammonium polyiodides is studied for the first time at interfaces imitating hybrid perovskite solar cells. Along widely known corrosion product—CuI, new MACu2I3 phase found. The presence lead derivatives as well reaction temperature are shown to have strong influence on resulting products. interplay between lead- and copper-containing iodides allows revealing either realistic chemical pathways or possible practical benefits from CuI crystallization...
Solutions of methylammonium and formamidinium polyhalides (AX1+n, A = MA, FA, X I, Br) in isopropanol are introduced as novel versatile precursors for the fabrication APbX3 hybrid perovskite thin films via oxidation metallic Pb. The polyhalide solution with adjustable reactivity is distributed over a Pb layer followed by iodine vapor postprocessing to tune morphology composition film using only elements inherently present perovskite. This method easily reproducible any materials science...
Surface passivation by various organic molecules is a widely used approach to compensate surface defects and improve stability of hybrid halide perovskites. For commonly cationic passivators, the formation 2D phases related heterostructures considered as an essential part process. However, there intriguing fundamental question: it possible achieve effective stable thinnest layer? In this article, we applied iodide salt new bulky bifunctional 11-carboxy-decylammonium cation (further AUDA+)...
Organic diammonium cations are a promising component of both layered (2D) and conventional (3D) hybrid halide perovskites in terms increasing the stability perovskite solar cells (PSCs). We investigated crystallization ability phase-pure 2D based on 1,4-butanediammonium iodide (BDAI2) with layer thicknesses n = 1, 2, 3 and, for first time, revealed presence persistent barrier to obtain BDA-based compounds > 1. Secondly, we introduced BDAI2 salt into 3D lead−iodide different cation...
Identification of crystal structures is a crucial stage in the exploration novel functional materials. This procedure usually time-consuming and can be false-positive or false-negative. necessitates significant level expert proficiency field crystallography and, especially, requires deep experience perovskite - related hybrid perovskites. Our work devoted to machine learning classification structure types lead halides based on available X-ray diffraction data. Here, we proposed simple...