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المؤلفون: Enrico Di Russo, Francesco Sgarbossa, Pierpaolo Ranieri, Gianluigi Maggioni, Samba Ndiaye, Sébastien Duguay, François Vurpillot, Lorenzo Rigutti, Jean-Luc Rouvière, Vittorio Morandi, Davide De Salvador, Enrico Napolitani
المساهمون: Dipartimento di Fisica e Astronomia [Bologna], Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Groupe de physique des matériaux (GPM), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche sur les Matériaux Avancés (IRMA), Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université de Caen Normandie (UNICAEN), Normandie Université (NU)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Magnetic Resonance (RM ), Modélisation et Exploration des Matériaux (MEM), Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA)-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Grenoble Alpes (UGA), Consiglio Nazionale delle Ricerche [Bologna] (CNR)
المصدر: Applied Surface Science
Applied Surface Science, 2023, 612, pp.155817. ⟨10.1016/j.apsusc.2022.155817⟩مصطلحات موضوعية: General Physics and Astronomy, Surfaces and Interfaces, General Chemistry, Condensed Matter Physics, [SPI.MAT]Engineering Sciences [physics]/Materials, Surfaces, Coatings and Films, germanium, GeSn, strain, pulsed laser melting, tin, germanium, tin, GeSn, pulsed laser melting, strain, defects, [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics, defects
الوصف: International audience
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c0f45fe346ac5e9f1cc08d64a3c66e50Test
https://doi.org/10.1016/j.apsusc.2022.155817Test -
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المؤلفون: Gian Andrea Rizzi, Gianluigi Maggioni, Sara Carturan, D. De Salvador, Igor Píš, Walter Raniero, Federica Bondino, Chiara Carraro, Enrico Napolitani, Francesco Sgarbossa
المصدر: Applied surface science 496 (2019). doi:10.1016/j.apsusc.2019.143713
info:cnr-pdr/source/autori:Sgarbossa F.; Maggioni G.; Rizzi G.A.; Carturan S.M.; Napolitani E.; Raniero W.; Carraro C.; Bondino F.; Pis I.; De Salvador D./titolo:Self-limiting Sb monolayer as a diffusion source for Ge doping/doi:10.1016%2Fj.apsusc.2019.143713/rivista:Applied surface science/anno:2019/pagina_da:/pagina_a:/intervallo_pagine:/volume:496مصطلحات موضوعية: Antimony, Materials science, Monolayer, Antimony, Germanium, Doping, Surface chemistry, Oxide, Analytical chemistry, General Physics and Astronomy, chemistry.chemical_element, Germanium, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, chemistry.chemical_compound, X-ray photoelectron spectroscopy, Monolayer, Doping, Diffusion (business), Dopant, Surfaces and Interfaces, General Chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Surface chemistry, 0104 chemical sciences, Surfaces, Coatings and Films, chemistry, 0210 nano-technology
الوصف: A new method for the creation of high-quality, fully electrically active junctions to be applied in nanostructured semiconductor materials is explored in this work. The method consists in a gas phase antimony deposition on Ge, which gives rise to an antimony self-limiting behavior to form a monolayer (ML) on the Ge (100) surface. The ML formation is characterized by a wide thermal process window in terms of time and temperature. Synchrotron radiation Angle Resolved X-ray Photoelectron Spectroscopy shows that the ML structure consists in oxidized Sb grown over a very thin layer of Ge oxide, and a small amount of metallic Sb is embedded beneath the Ge surface during the deposition process. Interestingly, during the ML formation process native Ge oxide is reduced without the need of strong acid pre-treatments. By performing further thermal annealing in equilibrium conditions, Sb diffusion can be faithfully described by a well assessed diffusion model. Finally, processing the Sb monolayer with Pulsed Laser Melting technique, which is a strongly out-equilibrium diffusion process, allows to exploit the entire Sb ML as a dopant source, thus achieving junctions with a very high dopant concentration (1.2 × 1020 cm−3 Sb surface concentration) and a 100% Sb electrical activation.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c1626e9d5a4b78d62bc09c42aa5f836Test
https://doi.org/10.1016/j.apsusc.2019.143713Test -
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المؤلفون: W. Raniero, Gianluigi Maggioni, M. Campostrini, G. Della Mea, Alberto Quaranta
المصدر: Applied Surface Science. 308:170-175
مصطلحات موضوعية: Materials science, business.industry, Band gap, Photovoltaic system, General Physics and Astronomy, Surfaces and Interfaces, General Chemistry, Spectral bands, Condensed Matter Physics, Rutherford backscattering spectrometry, Dichroic glass, Surfaces, Coatings and Films, Optics, Sputtering, Dichroic filter, Quantum efficiency, business
الوصف: This paper aims at designing, producing and characterizing a series of dichroic filters that are made up of a stack of layers with variable nanometer thickness. Such filters are created by PVD reactive magnetron sputtering, obtaining SiO2 and TiO2 through an active oxidation during the deposition. The single layers have then been analyzed using different techniques including RBS (Rutherford Backscattering Spectrometry) to determine the stoichiometry, AFM (Atomic Force Microscope) to assess the deposition rate, and UV–vis–NIR spectrophotometric analysis to evaluate the optical response. The application of the dichroic in concentration photovoltaic systems, separates the solar radiation in two optical spectral bands [7], that allows to couple them with a different solar cells which have dedicated external quantum efficiency. The optical separation using dichroic filters allows to combine different photovoltaic cells with an appropriate energy gap, thus optimizing the photovoltaic conversion.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::a764c6cca6a935969303dfbf702f74a8Test
https://doi.org/10.1016/j.apsusc.2014.04.130Test -
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المؤلفون: Sara Carturan, M. Rossignoli, Alberto Andrighetto, Stefano Corradetti, A. Monetti, Lisa Biasetto, Mattia Manzolaro, Gianluigi Maggioni, Giovanni Meneghetti, Daniele Scarpa
المصدر: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 317:446-449
مصطلحات موضوعية: Nuclear and High Energy Physics, Test bench, SPES project, Surface ionization, Hot-cavity ion source, Ionization efficiency, High temperature, Isotope, Ion beam, Chemistry, Analytical chemistry, Thermal ionization, Ion source, Isotope separation, law.invention, Ion, Nuclear physics, law, Ionization, Instrumentation
الوصف: Ion sources play a crucial role in ISOL (Isotope Separation On Line) facilities determining, with the target production system, the ion beam types available for experiments. In the framework of the SPES (Selective Production of Exotic Species) INFN (Istituto Nazionale di Fisica Nucleare) project, a preliminary study of the alkali metal isotopes ionization process was performed, by means of a surface ion source prototype. In particular, taking into consideration the specific SPES in-target isotope production, Cs and Rb ion beams were produced, using a dedicated test bench at LNL (Laboratori Nazionali di Legnaro). In this work the ionization efficiency test results for the SPES Ta surface ion source prototype are presented and discussed.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8b815ef2499037d645999e1e773a2c04Test
https://doi.org/10.1016/j.nimb.2013.07.045Test -
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المصدر: Solar Energy Materials and Solar Cells. 108:27-37
مصطلحات موضوعية: Materials science, Renewable Energy, Sustainability and the Environment, business.industry, Energy conversion efficiency, Analytical chemistry, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Waveguide (optics), Light scattering, 0104 chemical sciences, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, Parylene, chemistry, Optoelectronics, Thin film, 0210 nano-technology, Absorption (electromagnetic radiation), Luminescence, business, Deposition (law)
الوصف: Novel thin films of dye-doped parylene were produced by a deposition technique consisting in a coarse vacuum co-sublimation of parylene C dimer and the perylenediimide dye Lumogen ® F Red 305 (LR). In order to obtain parylene films containing different dye concentrations, LR was sublimated at temperatures ranging from 290 °C to 330 °C. The deposited films were characterized by FT-IR analysis, atomic force microscopy (AFM), optical absorption and emission spectroscopy. FT-IR analysis shows that LR is embedded in the parylene matrix, whose properties are not significantly affected by the dye incorporation. AFM analyses highlight the very low roughness of the deposited films, which is particularly important for optical applications, where light scattering at the air/film interface must be minimized. The optical properties of LR are preserved in the deposited films and the films exhibit the typical red light emission around 600 nm. No concentration quenching effects are found even at the highest LR concentrations obtained in this work, thus confirming the capability of the co-sublimation technique to obtain finely dispersed dye-containing films. Thin film luminescent solar concentrators (LSCs) were also produced by depositing LR-containing parylene films on glass and polymer waveguides and their properties were tested by measuring the output power of different solar cells coupled to one edge of the waveguide. Optical efficiency and power conversion efficiency of the LSC-based systems were then measured.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::078875b86aa1df6364ba825b4a73abf7Test
https://doi.org/10.1016/j.solmat.2012.08.009Test -
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المؤلفون: Alberto Quaranta, Gianluigi Maggioni, M. Buffa, G. Della Mea, Sara Carturan
المصدر: Optical Materials. 34:1219-1224
مصطلحات موضوعية: Condensation polymer, Materials science, Hydrosilylation, Organic Chemistry, 3-Hydroxyflavone, chemistry.chemical_element, Photochemistry, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Polymerization, Siloxane, Polymer chemistry, Molecule, Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Spectroscopy, Tin
الوصف: The optical properties of 3-hydroxyflavone (3HF) embedded in siloxane matrices obtained through different synthetic procedures are herein presented for the first time. In this work, polysiloxanes derived from Room Temperature Vulcanization (RTV) by (i) Pt catalyzed hydrosilylation, (ii) tin catalyzed polycondensation and (iii) moisture induced polycondensation are loaded with 3HF molecule both by direct dissolution of 3HF within the siloxane precursors and by swelling of the bare siloxanes from 3HF acetone solutions. The structural changes of the 3HF molecule as the cross-linking reaction proceeds are monitored by FT-IR spectroscopy, whereas the evolution of the optical features of the dye molecule and in particular of the Excited State Intramolecular Proton Transfer (ESIPT) mechanism in the course of RTV is observed by fluorescence and excitation spectroscopy.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::b539b722c1f49584585e4472667b7c95Test
https://doi.org/10.1016/j.optmat.2012.01.038Test -
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المؤلفون: Gabrio Valotto, Gianluigi Maggioni, M. Cinausero, F. Gramegna, V. L. Kravchuk, Alberto Quaranta, M. Buffa, Tommaso Marchi, G Guastalla, Sara Carturan, M. Degerlier
المصدر: Journal of Non-Crystalline Solids. 357:1921-1925
مصطلحات موضوعية: Scintillation, Materials science, Physics::Instrumentation and Detectors, Physics::Medical Physics, Radiochemistry, Doping, chemistry.chemical_element, Scintillator, Condensed Matter Physics, Neutron temperature, Electronic, Optical and Magnetic Materials, Condensed Matter::Materials Science, chemistry, Condensed Matter::Superconductivity, Scintillation counter, Physics::Atomic and Molecular Clusters, Materials Chemistry, Ceramics and Composites, Neutron detection, Luminescence, Boron
الوصف: Boron doped polysiloxane scintillators have been produced with different concentrations of boron and their scintillation yields have been studied as a function of the boron content under α, γ and fast and thermal neutrons irradiation. Their response has been compared with standard commercial plastic scintillators, namely EJ-212 as plastic scintillator and EJ-254 as boron doped scintillator. The produced samples exhibited a scintillation yield similar to EJ-212. The effect of boron on the energy transfer mechanism and on the polymer radiation hardness has been investigated by means of fluorescence and ion beam induced luminescence (IBIL) measurements. Detection efficiencies for thermal neutrons higher than commercial plastic scintillators have been attained with boron doped samples.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d73b9f81c4eadfc01e8f920ff9cdf1abTest
https://doi.org/10.1016/j.jnoncrysol.2010.10.043Test -
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المؤلفون: Tommaso Marchi, F. Gramegna, A. Antonaci, Alberto Quaranta, Carlo Scian, Gianluigi Maggioni, Sara Carturan, V.L. Kravchuk, M. Degerlier
المصدر: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 268:3155-3159
مصطلحات موضوعية: Nuclear and High Energy Physics, Scintillation, Materials science, Ion beam, Physics::Instrumentation and Detectors, business.industry, Doping, Analytical chemistry, Scintillator, Fluence, Light intensity, Physics::Accelerator Physics, Optoelectronics, Irradiation, business, Luminescence, Instrumentation
الوصف: The radiation hardness of polysiloxane based scintillators has been measured by ion beam induced luminescence (IBIL). The light intensity as a function of the irradiation fluence with an He+ beam at 1.8 MeV (1.0 μA/cm2) has been measured on undoped polymers synthesized with different amounts of phenyl units and on polysiloxanes doped with two different dye molecules (BBOT and Lumogen Violet) sensitizing the scintillation yield.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::d7ef123573a7c4dea0fc8cd717da0cb6Test
https://doi.org/10.1016/j.nimb.2010.05.077Test -
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المؤلفون: F. Gramegna, Sara Carturan, V.L. Kravchuk, M. Cinausero, Carlo Scian, Gianluigi Maggioni, Tommaso Marchi, Alberto Quaranta, M. Degerlier, M. Poggi
المصدر: Optical Materials. 32:1317-1320
مصطلحات موضوعية: chemistry.chemical_classification, Scintillation, Materials science, Ion beam, Dopant, Organic Chemistry, Analytical chemistry, Radioluminescence, Polymer, Scintillator, Atomic and Molecular Physics, and Optics, Electronic, Optical and Magnetic Materials, Inorganic Chemistry, chemistry, Yield (chemistry), Electrical and Electronic Engineering, Physical and Theoretical Chemistry, Luminescence, Spectroscopy, Nuclear chemistry
الوصف: Polysiloxane rubbers have been produced with different concentrations of phenyl groups and of dye molecules in order to find the best synthesis conditions for reaching a high light yield. In particular, two different polymer compositions were examined, namely with 15% and 22% of phenyl units in the starting resin. 2,5-Diphenyl oxazole (PPO) as a primary dopant and Lumogen F Violet 570 as secondary dopant were dispersed in the polysiloxane. Ion beam induced luminescence (IBIL) technique was employed for studying radioluminescence and radiation hardness properties. The α and γ scintillation yields were analyzed by measuring the pulse height spectra from 241Am and 60Co radioactive sources. First tests on the suitability of these materials to the detection of fast neutrons were also performed with a TOF procedure. Preliminary results indicate that these materials exhibit a scintillation yield comparable with NE102 plastic scintillator.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::2c95dc9b4c341b6b64bb6cc13fba712bTest
https://doi.org/10.1016/j.optmat.2010.04.021Test -
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المصدر: Sensors and Actuators B: Chemical. 131:496-503
مصطلحات موضوعية: Materials science, Optical gas sensing, Metals and Alloys, Analytical chemistry, Ambientale, Electrical gas sensing, Light reflectance, Plasma deposition, Analytical Chemistry, Electrochemistry, Electrical and Electronic Engineering, Plasma, Gas concentration, Condensed Matter Physics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Wavelength, Copper phthalocyanine, Materials Chemistry, Sublimation (phase transition), sense organs, Thin film, Porosity, Instrumentation
الوصف: Copper phthalocyanine (CuPc) thin films have been deposited by glow discharge-induced sublimation (GDS). This physical technique allows to produce very high porosity films, whose response to gases is much more intense than evaporated films. It has been found that both electrical and optical properties of these films change upon gas exposure due to the gas/film interaction. Electrical response of the films has been tested by exposing the samples to NO x -containing atmospheres and by measuring the slope of the electrical surface current versus gas concentration. This way NO 2 and NO concentrations down to 0.1 ppm and 10 ppm have been measured, respectively, with response times shorter than 2 min. Optical responses have been tested by measuring the change of light reflectance at a fixed wavelength upon exposure to ethanol-containing atmospheres down to concentrations of few thousands of ppm. Response times of less than 10 s have been obtained.
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b7b667c4e50589c3984f150c65d32adTest
https://doi.org/10.1016/j.snb.2007.12.020Test
