A5069323336- 2D Materials and Applications
- Perovskite Materials and Applications
- Phase Equilibria and Thermodynamics
- Solid-state spectroscopy and crystallography
- Graphene research and applications
- Semiconductor Quantum Structures and Devices
- MXene and MAX Phase Materials
- Chalcogenide Semiconductor Thin Films
- Heusler alloys: electronic and magnetic properties
- Material Dynamics and Properties
- Topological Materials and Phenomena
- Thermodynamic properties of mixtures
- Photonic and Optical Devices
University of Rome Tor Vergata
2019-2024
University of Perugia
2021
University College London
2021
Thanks to the ultrahigh flexibility of 2D materials and their extreme sensitivity applied strain, there is currently a strong interest in studying understanding how electronic properties can be modulated by applying uniform or nonuniform strain. In this work, using density functional theory (DFT) calculations, we discuss biaxial strain affects properties, such as ionization potential, electron affinity, gap, work function, different classes from X-enes nitrides transition metal...
One of the most exciting properties two dimensional materials is their sensitivity to external tuning electronic properties, for example via electric field or strain. Recently discovered analogues phosphorene, group-IV monochalcogenides (MX with M = Ge, Sn and X S, Se, Te), display several interesting phenomena intimately related in-plane strain, such as giant piezoelectricity multiferroicity, which combine ferroelastic ferroelectric properties. Here, using calculations from first...
By means of an ab initio investigation, exploiting many-body perturbation theory approaches on top ground-state density functional calculations, we disclose the impact electronic correlation band structure and optical properties a class recently synthesized Pb-free 2D-layered halide perovskites, namely, (BA)4AgBiBr8 (BA)2CsAgBiBr7. We observe strong out-of-plane excitonic dipoles characterizing spectra, result that suggests potential applicability these layered hybrid materials in photonics...
Both Differential Scanning Calorimetry (DSC) and Quasi-elastic Neutron Scattering (QENS) are powerful analytical tools actively used in studies of phase transitions complex solid liquid systems. DSC is typically to map transition temperatures identify sample states, QENS provides information on the molecular scale dynamical motions, such as self-diffusion or glassy dynamics, associated with transitions. techniques provide highly valuable complementary about many cases it would be...
We report a cathodoluminescence (CL) study of layered germanium sulfide (GeS) where we observe sharp emission peak from flakes covered with thin hexagonal boron nitride film. GeS is material that has recently attracted considerable interest due to its in the visible region and strong anisotropy. The measured CL at ~1.69 eV for samples ranging thickness 97 nm 45 nm, quantum-confinement effects can be excluded. By performing ab initio ground- excited-state simulations bulk compound, show...
Abstract By using ab initio simulations based on density functional theory and many‐body perturbation theory, a comprehensive analysis of the distinct optical signatures various tellurene polymorphs their associated unique anisotropic excitonic characteristics is presented. Despite atomic thickness these materials, findings reveal that absorbance reaches as high 50% in near‐infrared visible range. This investigation highlights exceptional potential 2D semiconducting materials development...