A5061813668- Solid-state spectroscopy and crystallography
- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- 2D Materials and Applications
- Semiconductor Quantum Structures and Devices
- Nonlinear Optical Materials Research
- Optical and Acousto-Optic Technologies
- Organic Electronics and Photovoltaics
- X-ray Diffraction in Crystallography
- Organic Light-Emitting Diodes Research
- Luminescence Properties of Advanced Materials
- solar cell performance optimization
- Crystallization and Solubility Studies
- Nanowire Synthesis and Applications
- Thin-Film Transistor Technologies
- Phase-change materials and chalcogenides
- Luminescence and Fluorescent Materials
- Magnetism in coordination complexes
- Advanced Sensor and Energy Harvesting Materials
- Semiconductor materials and interfaces
- Silicon Nanostructures and Photoluminescence
- Lanthanide and Transition Metal Complexes
- Spectroscopy and Quantum Chemical Studies
- Photoreceptor and optogenetics research
University of Southampton
2019-2022
University of Cagliari
2014
In this paper,we propose a hybrid quantum dot (QD)/Solar cell configuration to improve the performance of IBC silicon solar cells through efficient utilisation resonant energy transfer (RET) and luminescent downshifting (LDS).
Optoelectronics based on metal halide perovskites (MHPs) have shown substantial promise, following more than a decade of research. For prime routes commercialization such as tandem solar cells, optical modeling which requires accurate data for the materials utilized is essential engineering device architectures. Additionally, comprehensive understanding fundamental material properties vital simulating operation devices design purposes. In this article, we use variable angle spectroscopic...
Abstract Developing novel techniques for depositing transition metal dichalcogenides is crucial the industrial adoption of 2D materials in optoelectronics. In this work, lateral growth molybdenum disulfide (MoS 2 ) over an insulating surface demonstrated using electrochemical deposition. By fabricating a new type microelectrodes, MoS films grown from TiN electrodes across opposite sides are connected substrate, hence, forming device structure through only one lithography and deposition step....
Large amplitude motions in molecular solids are responsible for anomalous electrical characteristics amphidynamic crystals. Here we explore the implications charge transfer excitons photophysics.
A series of printable UV emitting ionic bifluorene derivatives have been prepared incorporating pendent alkylimidazolium groups. Herein, we detail the synthesis compounds and methods used in device fabrication. We show how ink formulation is improved by increasing solubility active through extension alkyl chain length switching counter ion from PF6− to CF3SO3−. also organic light electrochemical cells (OLECs) can be fabricated spray coating achieve an layer with a thickness ∼150–200 nm,...
Self-assembly of excitonic nanostructures from excess cationic MAI:PbCl<sub>2</sub>perovskite solutions.
Despite the advances in solar cells based on lead halide perovskites, nature of photogenerated charges and trap states within these materials remains unclear. A model describing recombination CH3NH3PbI3–xClx has been developed that accounts for phonon-assisted free-exciton free-carrier trapping. We utilize optical spectroscopies observe significant co-existence tetragonal orthorhombic structural phases at low temperatures. From measurements, we evaluate longitudinal–optical phonon energy,...
Multi-junction solar cells, according to the detailed balance limit, should be able achieve efficiencies above 50 percent. Work on new materials is necessary for improvements beyond current state of art. In this work, we evaluate use GaAsSbN, which has shown promise multi-junction particularly targeting 1eV cell. Epitaxial growth material in work been achieved via liquid phase epitaxy, as it can produce high quality crystalline layers. We present our initial and characterization results a...
Sol-gel silica thin films embedding an ytterbium quinolinolato complex (YbClQ 4 ) have been obtained using different alkoxides.Homogeneous, crack-and defect-free of optical quality successfully deposited on glass substrate by dip-coating.The characterized time-resolved photoluminescence.The luminescence properties the YbClQ4 are preserved in prepared through optimized sol-gel approach.The excited state lifetime lanthanide is comparable to those observed bulk and longer than corresponding...
Developing novel techniques for depositing transition metal dichalcogenides is crucial the industrial adoption of 2D materials in optoelectronics. In this work, lateral growth molybdenum disulfide (MoS2) over an insulating surface demonstrated using electrochemical deposition. By fabricating a new type microelectrodes, MoS2 films grown from TiN electrodes across opposite sides have been connected substrate, hence, forming device structure through only one lithography and deposition step....
Perovskite nanocrystals of the form FAPbBr<sub>3</sub> display significant promise in field optoelectronics. In particular, these could bridge `green gap' LED technology, and also serve to down-convert ultraviolet light for harvesting using silicon-based photovoltaic cells. To remain competitive with traditional devices, optimising energy transfer between nanocrystal device is crucial, however very little investigation has been performed into this subject. Here, we characterise dynamics on a...
Optoelectronics based on metal halide perovskites (MHPs) have shown substantial promise, following more than a decade of research. For prime routes commercialization such as tandem solar cells, optical modeling is essential for engineering device architectures, which requires accurate data the materials utilized. Additionally, comprehensive understanding fundamental material properties vital simulating operation devices design purposes. In this article, we use variable angle spectroscopic...
Light emitting devices such as OLECs are one form of electronic device that can be integrated into garments to realise light textiles. In the development wearable electrical devices, conductive organic materials conducting polymers, with ability emit in almost all colours spectrum, could substitute expensive and complex synthesis inorganic or metals. this paper, we report solution processed fabrication method on ITO coated glass substrates using commercially available blue emitter (Merck...