A5089914765- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- Magnetic and transport properties of perovskites and related materials
- Chalcogenide Semiconductor Thin Films
- ZnO doping and properties
- Luminescence and Fluorescent Materials
- Crystallography and molecular interactions
- Crystal Structures and Properties
- Combustion and Detonation Processes
- Catalysis and Oxidation Reactions
- Conducting polymers and applications
- Crystallization and Solubility Studies
- Nonlinear Optical Materials Research
- Semiconductor Lasers and Optical Devices
- X-ray Diffraction in Crystallography
- Risk and Safety Analysis
- Advanced Memory and Neural Computing
- Neural dynamics and brain function
- Energetic Materials and Combustion
- Structural Response to Dynamic Loads
- Photochromic and Fluorescence Chemistry
- Minerals Flotation and Separation Techniques
- Ferroelectric and Piezoelectric Materials
- Pigment Synthesis and Properties
Helmholtz-Zentrum Berlin für Materialien und Energie
2020-2024
Humboldt-Universität zu Berlin
2019-2024
Ambulatory Rehabilitation Center Berlin Adlershof
2020
Federal Institute For Materials Research and Testing
1991-2007
Abstract Large datasets are now ubiquitous as technology enables higher-throughput experiments, but rarely can a research field truly benefit from the data generated due to inconsistent formatting, undocumented storage or improper dissemination. Here we extract all meaningful device peer-reviewed papers on metal-halide perovskite solar cells published so far and make them available in database. We collect over 42,400 photovoltaic devices with up 100 parameters per device. then develop...
The ability to selectively tune the optical and mechanical properties of organic molecular crystals offers a promising approach towards developing flexible devices.
We demonstrate a bicoloured metal halide perovskite (MHP) light emitting diode (LED) fabricated in two sequential inkjet printing steps. By adjusting the parameters, we selectively and deliberately redissolve recrystallize first printed emissive layer to add pattern different color. The red features (on green background) have minimum size of 100 μm originate from iodide-rich domains phase-segregated, mixed MHP. This phase forms between layer, bromide-based MHP, which is partially dissolved...
Light-emitting diodes with an inkjet-printed active layer based on MAPbBr<sub>3</sub> perovskite are produced for the first time.
Large area metal halide perovskite LEDs were fabricated by inkjet printing. Homogeneous drying and crystallization was facilitated a guided optimized gas flow.
We report on the fabrication and optimization of Cs0.05FA0.79MA0.16Pb(Br0.17I0.83)3 perovskite solar cells from inks containing polymer PTB7 as an additive, comparing spin-coating inkjet printing deposition methods. Spin-coated devices exhibited a maximum power conversion efficiency 17.75% but showed little difference between samples with without ink additive. For inkjet-printed devices, combined parameters amount additive in precursor enabled layer increased quality. In comparison, added...
A new method for droplet placement in combinatorial inkjet printing, validated by synchrotron micro-spot X-ray diffraction mapping of CsPb(Br x I 1− ) 3 .
Irradiation-induced phase segregation in mixed methylammonium halide perovskite samples such as lead bromide-iodide, MAPb(IxBr1–x)3, is being studied intensively because it limits the efficiency of wide band gap solar cells. It has been postulated that this phenomenon depends on intrinsic ionic (in)homogeneity already induced during film formation. A deeper understanding MAPb(IxBr1–x)3 formation processes and influence ratio, solvents, precursor composition well processing parameters...
Controlling the nucleation and crystal growth in solution-processed metal halide perovskite (MHP) thin films is pivotal point fabricating homogenous pinhole-free films.
Metal halide perovskites have received great attention in recent years, predominantly due to the high performance of perovskite solar cells. The versatility material, which allows tunability bandgap, has led its use light‐emitting diodes, photo, and X‐ray detectors, among other optoelectronic device applications. Specifically photodetectors, bandgap fabrication spectrally selective devices. Utilizing a combinatorial inkjet printing approach, multiple compositions absorbing at specific...
Abstract A simple procedure for the production of pyrite (FeS 2 ) thin films starting from pure elements is presented. pure, highly (110) oriented polycrystalline iron precursor layer could be successfully electrodeposited. Direct sulphurization those on Mo foils resulted in with (200) grains embedded a randomly matrix. No other sulphide phase like e.g. marcasite was observed. XPS shows presence at least 97% FeS . Depth profiles demonstrate stoichiometric homogeneity across films.
Abstract Recent advancements in artificial intelligence (AI) have highlighted the critical need for energy‐efficient hardware solutions, especially edge‐computing applications. However, traditional AI approaches are plagued by significant power consumption. In response, researchers turned to biomimetic strategies, drawing inspiration from ion‐mediated operating principle of biological synapses, develop organic neuromorphic devices as promising alternatives. Organic mixed ionic‐electronic...
Metal halide perovskite solar cells (PSCs) have gained significant attention in thin-film photovoltaic research for their high power conversion efficiency (PCE) and facile fabrication processes. This study presents the use of inkjet printing to fabricate thin films combinatorial mixed formamidinium tin-lead perovskites evaluates layer quality device performance. Our findings demonstrate that incorporating Pb up 50% into FASnI3 enhances lattice stability. The investigation focused on...
Abstract The N , ′‐di‐ tert ‐butoxycarbonylindigo parent compound and four symmetrically substituted derivatives alternatively containing methoxy nitro substituents in positions 5 6 were synthesized. photochromic behavior was studied solvents ranging polarity from toluene to acetonitrile/water mixtures characterized terms of trans cis isomer spectra, conversion quantum yields thermal half‐lives the metastable isomers. at 21 °C varied a few seconds (5‐nitro polar solvents) several days...
Tuning and controlling the solid-state photophysical properties of organic luminophore are very important to develop next-generation luminescent materials. With aim discovering new functional materials, cocrystals 9-anthracene carboxylic acid (ACA) were prepared with two different dipyridine coformers: 1,2-bis(4-pyridyl)ethylene 1,2-bis(4-pyridyl)ethane. The successfully obtained by both mechanochemical approaches conventional solvent crystallization. newly crystalline solids characterized...
Organic single crystals that combine mechanical flexibility and optical properties are important for developing flexible devices, but examples of such remain scarce. Both activity depend on the underlying crystal packing nature intermolecular interactions present in solid state. Hence, both can be expected to tunable by small chemical modifications organic molecule. By incorporating a chlorine atom, reportedly mechanically (E)-1-(4-bromo-phenyl)iminomethyl-2-hydroxyl-naphthalene (BPIN)...
The solution chemistry of the precursor ink defines formation kinetics metal halide perovskites. Thus, rationalizing process from via deposition paves way for high-quality thin films optoelectronic devices.
Abstract No abstracts.
The search for alternative transparent electrodes to the commonly used indium tin oxide (ITO) in optoelectronic devices has led solution-based approaches based on inkjet printing. As an additive manufacturing technique that allows drops be positioned only where necessary, printing shows reduced waste of starting material compared other methods such as spin coating. a result, functional materials can both coated and structured without need masks or lithographic pre-patterning substrate. For...
Luft.An der oberen Explosionsgrenze herrscht Sauerstoffmangel, sodass hier vorhandene Sauerstoffanteile im Biogas berücksichtigt müssen.Für Explosionsschutzdokumente sollten Dreistoffdiagramme aus genormten Bestimmungs-