A5041169205- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Advancements in Battery Materials
- Chalcogenide Semiconductor Thin Films
- Advanced Battery Materials and Technologies
- Copper-based nanomaterials and applications
- Magnetic Properties and Synthesis of Ferrites
- Conducting polymers and applications
- Catalytic Processes in Materials Science
- Advanced Sensor and Energy Harvesting Materials
- Iron oxide chemistry and applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Nanomaterials for catalytic reactions
- X-ray Diffraction in Crystallography
- Solid-state spectroscopy and crystallography
- Extraction and Separation Processes
- Pickering emulsions and particle stabilization
- Advanced Battery Technologies Research
- Plasmonic and Surface Plasmon Research
- Crystal Structures and Properties
- 2D Materials and Applications
- Nanoparticle-Based Drug Delivery
- Terahertz technology and applications
- Graphene and Nanomaterials Applications
Italian Institute of Technology
2016-2025
Istituto Nazionale di Fisica Nucleare, Sezione di Genova
2015-2021
University of Padua
2019
University of Genoa
2016-2018
University of Cagliari
2004-2008
Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari
2003-2007
National Interuniversity Consortium of Materials Science and Technology
2006-2007
University of Milan
2003-2005
University of Kent
2003-2005
Michigan Technological University
2001-2002
We report a colloidal synthesis approach to CsPbBr3 nanoplatelets (NPLs). The nucleation and growth of the platelets, which takes place at room temperature, is triggered by injection acetone in mixture precursors that would remain unreactive otherwise. low temperature enables control plate thickness, can be precisely tuned from 3 5 monolayers. strong two-dimensional confinement carriers such small vertical sizes responsible for narrow PL, excitonic absorption, blue shift optical band gap...
A binary ligand system composed of aliphatic carboxylic acids and primary amines various chain lengths is commonly employed in diverse synthesis methods for CsPbBr3 nanocrystals (NCs). In this work, we have carried out a systematic study examining how the concentration ligands (oleylamine oleic acid) resulting acidity (or basicity) affects hot-injection NCs. We devise general scheme cesium lead bromide NCs which allows control over size, size distribution, shape, phase (CsPbBr3 or Cs4PbBr6)...
Compact TiO<sub>2</sub> is replaced by a low-temperature solution-processed TiO<sub>X</sub>/60-PCBM layer for electron extraction in perovskite solar cells with high steady conversion efficiencies.
We investigate the relationship between structural and optical properties of organo-lead mixed halide perovskite films as a function crystallization mechanism. For methylammonium lead tri-iodide, organic cations rearrange within inorganic cage, moving from crystals grown in mesoporous scaffold to larger, oriented on flat substrate. This reduces strain felt by bonds forming cage affects motion cation it, influencing electronic transition at onset absorption spectrum semiconductor. Moreover,...
Abstract Recently, intensive efforts are dedicated to convert and store the solar energy in a single device. Herein, dye-synthesized cell technology is combined with lithium-ion materials investigate light-assisted battery charging. In particular we report direct photo-oxidation of lithium iron phosphate nanocrystals presence dye as hybrid photo-cathode two-electrode system, metal anode hexafluorophosphate carbonate-based electrolyte; configuration corresponding ion Dye-sensitization...
Perovskite-related Cs4PbBr6 nanocrystals present a "zero-dimensional" crystalline structure where adjacent [PbBr6]4– octahedra do not share any corners. We show in this work that these can be converted into "three-dimensional" CsPbBr3 perovskites by extraction of CsBr. This conversion drastically changes the optoelectronic properties become highly photoluminescent. The CsBr achieved either thermal annealing (physical approach) or chemical reaction with Prussian Blue (chemical approach)....
Although water is considered detrimental for Li-ion battery technology, a 1% w/w amount of in melt LiCl ionic liquid 1-butyl-3-methylimidazolium chloride promotes the reduction lithium into LiAl intermetallic along with oxidation to O2 gas. The electrodeposition an layer several micrometers thickness demonstrated by combining complementary techniques, such as galvanostatics, X-ray diffraction, electron energy-loss spectroscopy, mass spectrometry, and 1H nuclear magnetic resonance....
We present an approach for the synthesis of ternary copper indium sulfide (CIS) and quaternary zinc (CIZS) nanocrystals (NCs) by means partial cation exchange with In3+ Zn2+. The consists a sequential three-step synthesis: first, binary Cu2S NCs were synthesized, followed homogeneous incorporation in situ cation-exchange reaction, leading to CIS NCs. In last step, second was performed where Zn2+ partially replaced Cu+ cations at surface, creating ZnS-rich shell preservation size shape. By...
Poly(vinylidene fluoride‐trifluoroethylene, P(VDF‐TrFE)) and P(VDF‐TrFE)/barium titanate nanoparticle (BTNP) films are prepared tested as substrates for neuronal stimulation through direct piezoelectric effect. Films characterized in terms of surface, mechanical, features before vitro testing on SH‐SY5Y cells. In particular, BTNPs significantly improve properties the (4.5‐fold increased d 31 ). Both kinds support good viability differentiation. Ultrasound (US) is proven to elicit Ca 2+...
The thermal evolution of a collection heterogeneous CdSe-Au nanosystems (Au-decorated CdSe nanorods, networks, vertical assemblies) prepared by wet-chemical approaches was monitored in situ the transmission electron microscope. In contrast to interfaces that are formed during kinetically controlled wet chemical synthesis, heating under vacuum conditions results distinct and well-defined CdSe/Au interfaces, located at polar surfaces. high quality these should make heterostructures more...
Synthesis approaches to colloidal Cu3P nanocrystals (NCs) have been recently developed, and their optical absorption features in the near-infrared (NIR) interpreted as arising from a localized surface plasmon resonance (LSPR). Our pump–probe measurements on platelet-shaped Cu3-xP NCs corroborate plasmonic character of this absorption. In accordance with studies crystal structure analysis dating back 1970s, our density functional calculations indicate that material is substoichiometric...
We report a highly reproducible route to synthesize iron oxide nanoparticles (IONPs) with control over size and shape dispersions around 10%. By tuning the relative ratio of squalane dibenzyl ether, which were used as solvents in synthesis, particles could be varied from 14 100 nm, while their evolved cubic (for ranges up 35 nm) truncated octahedra sizes 40 nm nm). Fine within each these achieved by varying heating ramp precursor decanoic acid ratio. also demonstrate direct water transfer...
Abstract Thermal decomposition of citric acid is one the most common synthesis methods for fluorescent carbon dots; reaction pathway is, however, quite complex and details are still far from being understood. For instance, several intermediates form during process they also give rise to species. In present work, formation C‐dots has been studied as a function time by coupling infrared analysis, X‐ray photoelectron spectroscopy, liquid chromatography/mass spectroscopy (LC/MS) with change...
Magnetic hyperthermia (MH) based on magnetic nanoparticles (MNPs) is a promising adjuvant therapy for cancer treatment. Particle clustering leading to complex interactions affects the heat generated by MNPs during MH. The efficiencies, theoretically predicted, are still poorly understood because of lack control fabrication such clusters with defined geometries and thus their functionality. This study aims correlate heating efficiency under MH individually coated iron oxide nanocubes (IONCs)...
CsPbBr3 nanocrystals passivated with short molecular ligands and deposited on a substrate were annealed from room temperature to 400 °C in inert atmosphere. Chemical, structural, morphological transformations monitored situ ex by different techniques, while optoelectronic properties of the film also assessed. Annealing at 100 resulted 1 order magnitude increase photocurrent photoresponse as result partial sintering NCs residual solvent evaporation. Beyond 150 original orthorhombic partially...
Terahertz spectroscopy has vast potentialities in sensing a broad range of elementary excitations (e.g., collective vibrations molecules, phonons, excitons, etc.). However, the large wavelength associated with terahertz radiation (about 300 μm at 1 THz) severely hinders its interaction nano-objects, such as nanoparticles, nanorods, nanotubes, and molecules biological relevance, practically limiting studies to macroscopic ensembles these compounds, form thick pellets crystallized or highly...
We studied the structural and compositional transformations of colloidal covellite (CuS) nanocrystals (and djurleite (Cu1.94S) as a control) when exposed to divalent cations, Cd2+ Hg2+, at room temperature in organic solvents. All experiments were run absence phosphines, which are necessary ingredient for cation exchange reactions involving copper chalcogenides, they strongly bind expelled Cu+ ions. Under these experimental conditions, no remarkable reactivity was indeed seen both CuS...
Sustainable biocomposites have been developed by solvent mixing of poly(lactic acid) (PLA) with a fine powder cocoa bean shells (CBS) and subsequent solution casting, using different concentrations CBS. The inclusion CBS recovers the crystallinity initially amorphous PLA films improves physical properties composites. Young's modulus increases 80% 75 wt % inclusion; however, composites maintain plasticity. barrier hydrophobic were characterized, water vapor permeability is found to be ca. 3.5...
Although the growth of graphene by chemical vapor deposition is a production technique that guarantees high crystallinity and superior electronic properties on large areas, it still challenge for manufacturers to efficiently scale up industrial scale. In this context, issues related purity reproducibility batches exist need be tackled. When grown in quartz furnaces, particular, common end with samples contaminated heterogeneous particles, which alter mechanism affect graphene's properties....
Abstract The development of wearable technology increasingly requires bendable sensing devices operating across multiple domains for opto‐electro‐mechanical and biochemical transduction. Piezoelectric materials integrated into flexible transparent device architectures can enable multiple‐sensing platforms. It is shown that compliant surface‐acoustic‐wave (SAW) piezoelectric include all these features be applied to the human body. A aluminum‐nitride‐(AlN)‐based SAW on a thermoplastic...
Abstract The necessity to continuously and seamlessly monitor human health is calling for compliant, comfortable, safe wearables. employment of piezoelectric biopolymers in form thin film perfectly matches with these needs due their inherent flexibility, sensitivity, biocompatibility. Among them, chitosan a low cost, highly sustainable, biocompatible material great potential applications compliant However, general show relatively coefficients processing difficulties. Here, it shown facile...