A5033599053- Perovskite Materials and Applications
- Conducting polymers and applications
- Chalcogenide Semiconductor Thin Films
- Electrowetting and Microfluidic Technologies
- Electrohydrodynamics and Fluid Dynamics
- Advanced Sensor and Energy Harvesting Materials
- Quantum Dots Synthesis And Properties
- Microfluidic and Bio-sensing Technologies
- Carbon Nanotubes in Composites
- Surface Modification and Superhydrophobicity
- Crystal Structures and Properties
- Solid-state spectroscopy and crystallography
- Photonic Crystals and Applications
- Catalysis and Oxidation Reactions
- Magnetic and transport properties of perovskites and related materials
- Inorganic Fluorides and Related Compounds
- Polymer Nanocomposites and Properties
- Organic Electronics and Photovoltaics
- Additive Manufacturing and 3D Printing Technologies
- Photonic and Optical Devices
- Electrospun Nanofibers in Biomedical Applications
- Neuroscience and Neural Engineering
- Micro and Nano Robotics
- Advanced Optical Imaging Technologies
- Organic and Molecular Conductors Research
University of Naples Federico II
2013-2024
National Agency for New Technologies, Energy and Sustainable Economic Development
2024
Institute of Applied Science and Intelligent Systems
2016-2022
Naples Anesthesia & Physician Associates
2020
Institute of Polymers, Composites and Biomaterials
2014-2018
National Research Council
2015-2018
Istituto di Chimica Biomolecolare
2014
Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability solar cells. We stabilized the perovskite black improved cell performance using ordered dipolar structure of β-poly(1,1-difluoroethylene) to control film crystallization energy alignment. demonstrated p-i-n cells with a record power conversion efficiency 24.6% over 18 square millimeters 23.1% 1 centimeter, which retained 96 88% after 1000 hours 1-sun maximum point...
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...
Abstract Tin halide perovskites attract incremental attention to deliver lead‐free perovskite solar cells. Nevertheless, disordered crystal growth and low defect formation energy, related Sn(II) oxidation Sn(IV), limit the efficiency stability of Engineering processing from precursor solution preparation film crystallization is crucial tackle these issues enable full photovoltaic potential tin perovskites. Herein, ionic liquid n ‐butylammonium acetate (BAAc) used tune coordination with...
Tin-halide perovskites have great potential as photovoltaic materials, but their performance is hampered by undesirable oxidation of Sn(<sc>ii</sc>) to Sn(<sc>iv</sc>). NMR proves DMSO be a main cause oxidation.
Abstract ASnX 3 perovskite solar cells (Sn‐PSC) have the potential to deliver most efficient cell technology with safe materials. In this review, a comprehensive introduction of field is given, that suitable for nonexperts, gradually leading reader narrower and detailed analysis recent significant advances. A brief description given alternatives lead‐free PSC reasons compounds' status as one promising candidates are presented. The last part review focuses on stabilization , which compelling...
Abstract Due to their outstanding optoelectronic properties, lead-based halide perovskite materials have been applied as efficient photoactive in solution-processed solar cells. Current record efficiencies offer the promise surpass those of silicon However, uncertainty about potential toxicity and facile dissolution water requires a search for new alternative perovskite-like materials. Thanks foresight scientists experience preparation, remarkable results obtained short period time using...
Tin is the frontrunner for substituting toxic lead in perovskite solar cells. However, tin suffers detrimental oxidation of SnII to SnIV . Most reported strategies employ SnF2 precursor solution prevent formation. Nevertheless, working mechanism this additive remains debated. To further elucidate it, we investigate fluoride chemistry halide perovskites by complementary analytical tools. NMR analysis discloses a strong preferential affinity anions over , selectively complexing it as SnF4 Hard...
Tin is one of the most promising alternatives to lead make lead-free halide perovskites for optoelectronics. However, stability tin-based hindered by oxidation Sn(II) Sn(IV). Recent works established that dimethyl sulfoxide, which best-performing solvents processing perovskite, primary source tin oxidation. The quest a stable solvent could be game-changer in perovskites. Starting from database over 2000 solvents, we identified series 12 new suitable formamidinium iodide perovskite (FASnI3)...
Controlling the crystallization of perovskite in a thin film is essential making solar cells. Processing tin-based films from solution challenging because uncontrollable faster tin than most used lead perovskite. The best performing devices are prepared by depositing dimethyl sulfoxide it slows down assembly tin-iodine network that forms However, while seems to control crystallization, oxidizes during processing. This work demonstrates 4-(tert-butyl) pyridine can replace without oxidizing...
In just over a decade, the power conversion efficiency of metal‐halide perovskite solar cells has increased from 3.9% to 25.5%, suggesting this technology might be ready for large‐scale exploitation in industrial applications. Photovoltaic devices based on single crystals are emerging as viable alternative polycrystalline materials. Perovskite indeed possess lower trap state densities, higher carrier mobilities, and longer diffusion lengths, potentially can achieve performance with respect...
In this study, we report a direct writing method for the fabrication of microfluidic footpaths by pyro-electrohydrodynamic (EHD) jet printing. Here, propose use nozzle-free three-dimensional printing technique printed structures that can be embedded in variety soft, transparent, flexible, and biocompatible polymers thus easily integrated into lab-on-chip devices. We prove advantage high resolution flexibility pyro-EHD realization channels well below standard limit dimension conventional...
Perovskite solar cells (PSCs) have the potential for widespread application, but challenges remain a reliable characterization of their performance. Standardized protocols measuring and reporting are still debated. Focusing on short circuit current density ( J SC ), current–voltage characteristics J–V ) external quantum efficiency (EQE) collected to estimate parameter. Still, they often provide mismatch above 1 mA cm −2 , resulting in possible 5% or higher error. Combining experimental data...
ADVERTISEMENT RETURN TO ISSUEPREVCommunicationNEXTTethered Pyro-Electrohydrodynamic Spinning for Patterning Well-Ordered Structures at Micro- and NanoscaleSara Coppola†‡, Veronica Vespini†, Giuseppe Nasti‡, Oriella Gennari†, Simonetta Grilli†, Maurizio Ventre‡, Maria Iannone§, Paolo A. Netti‡§, Pietro Ferraro*†View Author Information† CNR − Istituto Nazionale di Ottica, Via Campi Flegrei 34, 80078 Pozzuoli, Napoli, Italy‡ Department of Chemical Materials Production Engineering, University...
In this paper, we introduce a single-step self-assembling process aimed at forming two-dimensional (2-D) array microstructures made from nanocomposite polymer layer in which are dispersed CdSe-CdS nanocrystals. The novelty of the reported here is that it operates simultaneously as two-fold where liquid matrix self-shaped by electrohydrodynamic pressure 2-D microstructures, while same time, nanocrystals self-assembled dielectrophoretic forces. proposed approach could inspire future smart...
Nowadays it is easy to imagine that the exploitation of different additive manufacturing approaches could find use in regenerative medicine and frontiers nanotechnology with a strong interest development vivo bio-incubators better replicate tissue environment. Various electrospinning technologies have been exploited for fabrication composite polymeric architectures, where fibers used construction layer by micro-architectures. Unfortunately, case processing biomaterials, intrinsic factors...
Carbon nanoparticles are becoming ubiquitous in many fields of science and technology. However, a grand challenge remains assembling, patterning, positioning or even simple manipulation CNTs for complex functional assemblies. have fact enormous perspectives application biotechnologies as bactericide agents prominent tools investigating cell mechanisms, more general functionalized nanoparticle-vectors, but their exploitation requires viable technology at the lab-on-a-chip scale. Many...
In this paper, we introduce an easy multiscale approach for the fabrication of polymer microlens arrays through a self-assembling process driven by electrohydrodynamic (EHD) pressure. This method represents simple alternative to conventional soft lithography techniques. A thin layer liquid is deposited on microengineered ferroelectric crystal and can be self-assembled cross-linked in single-step as consequence pyroelectric effect activated simply heating substrate. Although EHD instability...
The intrinsic photoluminescence emission properties of high-quality bulk crystals CH3NH3PbBr3 under excitation by two-photon absorption at 810 nm are presented. A strongly non-monotonous wavelength shift the with increasing temperature is observed, which can be associated discrete transitions between several stable crystalline phases. Experimentally, both (5 – 300 K) and density varied. At room temperature, a scaling 4th power in contrast to quadratic behavior cryogenic temperatures. We...
One of the most important substances on Earth is water. It an essential medium for living microorganisms and many technological industrial processes. Confining water in enclosed compartment without manipulating it or by using rigid containers can be very attractive, even more if container biocompatible biodegradable. Here, we propose a water-based bottom-up approach facile encasing short-lived silhouettes custom-made adaptive suit. A polymer self-assembling with unprecedented degree freedom...
The power conversion efficiency of the formamidinium tin iodide (FASI) solar cells constantly increases, with current record approaching 15%. literature reports a broad anomaly distribution photoluminescence (PL) peak position. PL is particularly relevant to photovoltaic applications since it directly links material's bandgap and subgap defects energy, which are crucial extracting its full potential. Herein, FASI polycrystalline thin film powder studied. It found that positions in line...