A5050386550- Organoselenium and organotellurium chemistry
- Organic Chemistry Cycloaddition Reactions
- Free Radicals and Antioxidants
- Perovskite Materials and Applications
- Chemical Thermodynamics and Molecular Structure
- Organometallic Compounds Synthesis and Characterization
- Conducting polymers and applications
- Fluorine in Organic Chemistry
- Porphyrin and Phthalocyanine Chemistry
- Chalcogenide Semiconductor Thin Films
- Organic and Molecular Conductors Research
- Quantum Dots Synthesis And Properties
- Crystal structures of chemical compounds
- Molecular Spectroscopy and Structure
- Inorganic and Organometallic Chemistry
- Advanced MEMS and NEMS Technologies
- Microfluidic and Capillary Electrophoresis Applications
- Thin-Film Transistor Technologies
- Advanced Materials and Mechanics
- Ionic liquids properties and applications
- Sulfur-Based Synthesis Techniques
- Advanced Sensor and Energy Harvesting Materials
- Nanofabrication and Lithography Techniques
- Oxidative Organic Chemistry Reactions
- Molecular spectroscopy and chirality
Leibniz Institute for Solid State and Materials Research
2021-2024
TU Dresden
2024
Heidelberg University
2017-2019
Kirchhoff (Germany)
2018-2019
German Cancer Research Center
2017
Southern Federal University
1985-1997
Institute of Physical and Organic Chemistry
1988-1991
State Research Institute of Organic Chemistry and Technology
1984
Abstract This paper investigates the impact of microstructure on degradation rate methylammonium lead triiodide (MAPbI 3 ) perovskite films upon exposure to light and oxygen. By comparing oxygen induced different microstructure–fabricated using either a acetate trihydrate precursor or solvent engineering technique–it is demonstrated that with larger more uniform grains better electronic quality show significantly reduced compared smaller, irregular grains. The effect optical, compositional,...
Magnetic sensors are widely used in our daily life for assessing the position and orientation of objects. Recently, magnetic sensing modality has been introduced to electronic skins (e-skins), enabling remote perception moving However, integration density is limited vector properties field cannot be fully explored since can only perceive components one or two dimensions. Here, we report an approach fabricate high-density integrated active matrix sensor with three-dimensional (3D) capability....
Perovskite-based solar cells are promising because of their rapidly improving efficiencies but suffer from instability issues. Recently, it has been claimed that one the key contributors to perovskite is ion migration-induced electrode degradation, which can be avoided by incorporating inorganic hole-blocking layers (HBLs) in device architecture. In this work, we investigate operational environmental stability methylammonium lead iodide contain either an or organic HBL, with only former...
Self assembled catheters with deep sub-mm diameters deliver liquids, carry out micromanipulation, and sense magnetic fields.
To use the "apparent diffusion coefficient" (Dapp) as a quantitative imaging parameter, well-suited test fluids are essential. In this study, previously proposed aqueous solutions of polyvinylpyrrolidone (PVP) were examined and temperature calibrations obtained. For example, at 20°C, Dapp ranged from 1.594 (95% CI: 1.593, 1.595) μm2/ms to 0.3326 0. 3304, 0.3348) for PVP-concentrations ranging 10% (w/w) 50% using K30 polymer lengths. The dependence was found be so strong that negligence seems...
The next generation of biomedical tools requires reshapeable electronics to closely interface with biological tissues. This will offer unique mechanical properties and the ability conform irregular geometries while being robust lightweight. Such devices can be achieved soft materials thin‐film structures that are able reshape on demand. However, reshaping at submillimeter scale remains a challenging task. Herein, shape‐controlled microscale demonstrated integrate electronic sensors...
Abstract Many modern electronic applications rely on functional units arranged in an active‐matrix integrated a single chip. The allows numerous identical device pixels to be addressed within system. However, next‐generation electronics requires heterogeneous integration of dissimilar devices, where sensors, actuators, and display sense interact with the local environment. Heterogeneous material reduction size, increase functionality, enhancement performance; however, it is challenging since...
Biodegradable medical implants promise to benefit patients by eliminating risks and discomfort associated with permanent implantation or surgical removal. The time until full resorption is largely determined the implant's material composition, geometric design, surface properties. Implants a fixed residence time, however, cannot account for needs of individual patients, thereby imposing limits on personalization. Here, an active Fe-based implant system reported whose biodegradation...
Abstract Following the remarkable advances in performance of metal halide perovskite solar cells, recent research efforts have focused more on enhancing their long‐term stability. Among various factors that impact device's lifetime, humidity‐driven degradation plays an important role and can significantly lower device within hours. It is generally considered humidity‐induced proceeds via formation hydrogen bonds between water molecules nitrogen atoms widely used ammonium‐based organic...
Abstract Despite the remarkable advances in field of perovskite photovoltaics, use toxic solvents for their fabrication poses a significant challenge to scale‐up and commercialization. The vast majority studies rely on using highly hazardous N, N‐Dimethylformamide (DMF), with green alternatives remaining scarce. In this work, glycerol formal (Gly‐F) is reported as solvent fabricating quasi‐2D ( n = 5) solar cells. Quasi‐2D films processed from Gly‐F exhibit high degree uniformity compact...
The review gives a systematic account of the survey data on application organic compounds tellurium in synthesis hydrocarbons, halogeno-derivatives, and carbonyl compounds. bibliography includes 94 references.
Fast autonomous rhythmic motion is achieved in water for an artificial microsystem inspired by biologically relevant frequencies.
In organic and hybrid photovoltaic devices, the asymmetry required for charge separation necessitates use of a donor an acceptor material, resulting in formation internal interfaces device active layer. While core objective these is to facilitate separation, bound states between electrons holes may form across them, loss mechanism that diminishes performance solar cells. These interfacial transitions appear systems as transfer (CT) pairs (BCP) systems. Despite being similar, latter are far...
Abstract Poly(o‐phenyleneditelluride) 6 has been prepared by the reduction of 1,2‐bis(trichlorotelluro)benzene obtained treatment 1,2‐bis(trimethylsilyl)benzene with TeCl 2 . The NaBH 4 in ethanol solution affords sodium benzene‐1,2‐ditellurolate, which, upon methylene bromide, forms benzo‐1,3‐ditellurole 40–47% yield. Benzo‐1, 3‐ditellurole also synthesized 18–20% yeild reaction 1,2‐bis(trimethylslyl)benzene bis(trichlorotelluro)methane, subsequent product, 1,1,3,3‐tetrachlorobenzo‐1,3‐ditellurole.
Abstract Literature data concerning the synthesis and reactions of diorganyl tellurides, viz., dialkyl, alkyl aryl diaryl tellurides are systematized generalized in this review. Key Words: Alkyl telluridesdialkyl telluridesdiaryl
Abstract A comprehensive up-to-date review of the synthesis and reactions benzo-1,3-dithioles, benzo-1,3-diselenoles benzo-1,3-ditelluroles is presented. An appreciable synthetic potential these chalcogen-containing heterocycles for preparation dibenzotetrachalcogenafulvalenes, particularly carbonyl compounds hydrocarbons, displayed.
Perovskite Solar Cells In article number 2402916, Yana Vaynzof, and co-workers reported glycerol formal as a green solvent for processing efficient stable quasi-2D (n = 5) metal halide perovskite solar cells.
In article number 1700977, Yana Vaynzof and co-workers investigate how the MAPbI3 perovskite layer microstructure is affecting its stability upon exposure to oxygen light. The authors show that degradation process initiated at grain boundaries, demonstrating devices whose active consists of larger, more uniform grains exhibit enhanced photovoltaic stability.
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 100 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”