Ioannis Deretzis
YOU?
Author Swipe
View article: Tailoring Nuclear Spins Order With Defects: A Quantum Technology CAD Study
Tailoring Nuclear Spins Order With Defects: A Quantum Technology CAD Study Open
The full design of relevant systems for quantum applications, ranging from quantum simulation to sensing, is presented using a combination of atomistic methods. A prototypical system features a 2D ordered distribution of spins interacting …
View article: Electrical and Structural Properties of Ohmic Contacts of SiC Diodes Fabricated on Thin Wafers
Electrical and Structural Properties of Ohmic Contacts of SiC Diodes Fabricated on Thin Wafers Open
New generations of SiC power devices require to be fabricated on very thin substrates, in order to significantly reduce the series resistance of the device. The role of thinning process on the formation of backside ohmic contact has been i…
View article: Laser‐Annealed SiO<sub>2</sub>/Si<sub>1−<i>x</i></sub>Ge<sub><i>x</i></sub> Scaffolds for Nanoscaled Devices, Synergy of Experiment, and Computation
Laser‐Annealed SiO<sub>2</sub>/Si<sub>1−<i>x</i></sub>Ge<sub><i>x</i></sub> Scaffolds for Nanoscaled Devices, Synergy of Experiment, and Computation Open
Ultraviolet nanosecond laser annealing (UV‐NLA) proves to be an important technique, particularly when tightly controlled heating and melting are necessary. In the realm of semiconductor technologies, the significance of NLA grows in tande…
View article: Mechanism of Grain Densification in Nano- and Poly-Crystalline Cu Films and Its Impact in Advanced Metallization Processes
Mechanism of Grain Densification in Nano- and Poly-Crystalline Cu Films and Its Impact in Advanced Metallization Processes Open
We investigate the microstructural evolution of electrochemically deposited poly-crystalline Cu films during subsequent thermal process cycles at mild maximum temperatures, compatible with the integration in advanced metallization schemes …
View article: Performance Evaluation of Printable Carbon‐Based Perovskite Solar Cells Infiltrated with Reusable CsPbI<sub>3</sub>:EuCl<sub>3</sub> and Standard AVA‐MAPbI<sub>3</sub>
Performance Evaluation of Printable Carbon‐Based Perovskite Solar Cells Infiltrated with Reusable CsPbI<sub>3</sub>:EuCl<sub>3</sub> and Standard AVA‐MAPbI<sub>3</sub> Open
Hole‐transporting layer‐free mesoporous carbon (mC) architectures represent a printable, low‐cost, and stable solution for the future commercialization of perovskite solar cells (PSCs). CsPbI 3 perovskite is attracting attention for its in…
View article: Interface Properties of MoS2 van der Waals Heterojunctions with GaN
Interface Properties of MoS2 van der Waals Heterojunctions with GaN Open
The combination of the unique physical properties of molybdenum disulfide (MoS2) with those of gallium nitride (GaN) and related group-III nitride semiconductors have recently attracted increasing scientific interest for the realization of…
View article: Temperature‐Dependent Excitonic Band Gap in Lead‐Free Bismuth Halide Low‐Dimensional Perovskite Single Crystals
Temperature‐Dependent Excitonic Band Gap in Lead‐Free Bismuth Halide Low‐Dimensional Perovskite Single Crystals Open
In this study, the optical behavior of lead‐free Bi‐based low‐dimensional perovskite single crystals (Cs 3 Bi 2 Cl 9 , Cs 3 Bi 2 Br 9 , Cs 3 Bi 2 I 9 , and MA 3 Bi 2 I 9 ) is investigated by spectroscopic ellipsometry, supported by X‐ray d…
View article: X-ray Investigation of CsPbI3:EuCl3 Infiltrated into Gig-Lox TiO2 Spongy Layers for Perovskite Solar Cells Applications
X-ray Investigation of CsPbI3:EuCl3 Infiltrated into Gig-Lox TiO2 Spongy Layers for Perovskite Solar Cells Applications Open
In this study, we explore the potential of a blended material comprising CsPbI3:EuCl3 perovskite and Gig-Lox TiO2, a unique transparent spongy material known for its multi-branched porous structure, for application in solar cells. The incl…
View article: Local Coordination Modulates the Reflectivity of Liquefied Si-Ge Alloys
Local Coordination Modulates the Reflectivity of Liquefied Si-Ge Alloys Open
The properties of liquid Si-Ge binary systems at melting conditions deviate from those expected by the ideal alloy approximation. Particularly, a non-linear dependence of the dielectric functions occurs with the reflectivity of liquid Si-G…
View article: Atomistic Insights into Ultrafast SiGe Nanoprocessing
Atomistic Insights into Ultrafast SiGe Nanoprocessing Open
Controlling ultrafast material transformations with atomic precision is essential for future nanotechnology. Pulsed laser annealing (LA), inducing extremely rapid and localized phase transitions, is a powerful way to achieve this but requi…
View article: Atomistic insights into ultrafast SiGe nanoprocessing
Atomistic insights into ultrafast SiGe nanoprocessing Open
Controlling ultrafast material transformations with atomic precision is essential for future nanotechnology. Pulsed laser annealing (LA), inducing extremely rapid and localized phase transitions, is a powerful way to achieve this, but it r…
View article: Multiscale atomistic modelling of CVD: From gas-phase reactions to lattice defects
Multiscale atomistic modelling of CVD: From gas-phase reactions to lattice defects Open
Growth from vapour/gas/plasma phases is a key process to produce high-quality nanostructures and thin films. The quest for high performances at low cost calls for the development of modelling strategies able to accurately predict growth ra…
View article: First Experimental Evidence of Amorphous Tin Oxide Formation in Lead‐Free Perovskites by Spectroscopic Ellipsometry
First Experimental Evidence of Amorphous Tin Oxide Formation in Lead‐Free Perovskites by Spectroscopic Ellipsometry Open
The most promising lead‐free options for producing perovskite solar cells are tin halide perovskite materials. Herein, while in situ monitoring the optical evolution of the material in humid air, spectroscopic ellipsometry is used to inves…
View article: Interface Structure and Doping of Chemical Vapor Deposition‐Grown MoS<sub>2</sub> on 4H–SiC by Microscopic Analyses and Ab Initio Calculations
Interface Structure and Doping of Chemical Vapor Deposition‐Grown MoS<sub>2</sub> on 4H–SiC by Microscopic Analyses and Ab Initio Calculations Open
The interface structure and electronic properties of monolayer (1L) MoS 2 domains grown by chemical vapor deposition on 4H–SiC(0001) are investigated by microscopic/spectroscopic analyses combined with ab initio calculations. The triangula…
View article: Ni-Silicide Ohmic Contacts on 4H-SiC Formed by Multi Pulse Excimer Laser Annealing
Ni-Silicide Ohmic Contacts on 4H-SiC Formed by Multi Pulse Excimer Laser Annealing Open
The formation of ohmic contacts by laser annealing approach is of great importance for SiC power devices, since it allows their fabrication on thin substrates, that is of crucial significance to reduce power dissipation. Ni silicide reacti…
View article: Direct atomic layer deposition of ultra-thin Al2O3 and HfO2 films on gold-supported monolayer MoS2
Direct atomic layer deposition of ultra-thin Al2O3 and HfO2 films on gold-supported monolayer MoS2 Open
In this paper, the atomic layer deposition (ALD) of ultra-thin films (80 ALD cycles, corresponding to 3.6 nm $Al_{2}O_{3}$ and 3.1 nm $HfO_{2}$. Current mapping by C-AFM showed, for the same applied bias, a uniform insulating behavior of $…
View article: Lead Detection in a Gig-Lox TiO2 Sponge by X-ray Reflectivity
Lead Detection in a Gig-Lox TiO2 Sponge by X-ray Reflectivity Open
The importance of lead analysis in environmental matrices becomes increasingly relevant due to the anthropogenic spread of toxic species in nature. Alongside the existing analytical methods to detect lead in a liquid environment, we propos…
View article: Impact of surface reflectivity on the ultra-fast laser melting of silicon-germanium alloys
Impact of surface reflectivity on the ultra-fast laser melting of silicon-germanium alloys Open
Ultraviolet nanosecond laser annealing (LA) is a powerful tool where strongly confined heating and melting are desirable. In semiconductor technologies the importance of LA increases with the increasing complexity of the proposed integrati…
View article: Multiscale Simulations for Defect-Controlled Processing of Group IV Materials
Multiscale Simulations for Defect-Controlled Processing of Group IV Materials Open
Multiscale approaches for the simulation of materials processing are becoming essential to the industrialization of future nanotechnologies, as they allow for a reduction in production costs and an enhancement of devices and applications. …
View article: Stability and decoherence analysis of the silicon vacancy in 3C-SiC
Stability and decoherence analysis of the silicon vacancy in 3C-SiC Open
We study the silicon vacancy in 3C SiC as a color center of interest in the field of Quantum Technologies, focusing on its magnetic interaction with the SiC nuclear spin bath containing Si29 and C13 nuclei in their natural isotopic concent…
View article: Computational Study of the Silicon Vacancy in 3C-SiC and Perspectives for Quantum Technologies
Computational Study of the Silicon Vacancy in 3C-SiC and Perspectives for Quantum Technologies Open
We theoretically study point defects in 3C-SiC for applications in Quantum Technologies, focusing on the neutral silicon vacancy, with an electron spin of 1, magnetically interacting with the SiC nuclear spin bath containing Si-29 and C-13…
View article: Multiscale Simulations of Plasma Etching in Silicon Carbide Structures
Multiscale Simulations of Plasma Etching in Silicon Carbide Structures Open
Manufacturing of Silicon Carbide (SiC) based devices will soon require the accuracy and control typical of the advanced Si based nanoelectronics. As a consequence, the processes development will surely benefit of technology computer aided …
View article: Out‐of‐Glovebox Integration of Recyclable Europium‐Doped CsPbI<sub>3</sub> in Triple‐Mesoscopic Carbon‐Based Solar Cells Exceeding 9% Efficiency
Out‐of‐Glovebox Integration of Recyclable Europium‐Doped CsPbI<sub>3</sub> in Triple‐Mesoscopic Carbon‐Based Solar Cells Exceeding 9% Efficiency Open
CsPbI 3 perovskites are attracting huge interest for their inorganic structure and thanks to a bandgap of 1.69–1.78 eV that makes them suitable for application in tandem solar cells with silicon. Herein, all‐inorganic hole‐transporting‐lay…
View article: Multiscale modeling of ultrafast melting phenomena
Multiscale modeling of ultrafast melting phenomena Open
Ultraviolet Nanosecond Laser Annealing (LA) is a powerful tool for both fundamental investigations of ultrafast, nonequilibrium phase-change phenomena and technological applications (e.g., the processing of 3D sequentially integrated nano-…
View article: Black‐Yellow Bandgap Trade‐Off During Thermal Stability Tests in Low‐Temperature Eu‐Doped CsPbI<sub>3</sub>
Black‐Yellow Bandgap Trade‐Off During Thermal Stability Tests in Low‐Temperature Eu‐Doped CsPbI<sub>3</sub> Open
The black γ‐phase of CsPbI 3 with its bandgap at ≈1.75 eV can enable the take‐off of tandem solar cells as soon as intrinsic instability to the yellow δ‐phase is solved. Here, a black γ‐phase is formed at low temperature (80–90 °C) by inco…
View article: An Experimental Evaluation of Resistive Defects and Different Testing Solutions in Low-Power Back-Biased SRAM Cells
An Experimental Evaluation of Resistive Defects and Different Testing Solutions in Low-Power Back-Biased SRAM Cells Open
This paper compares different types of resistive defects that may occur inside low-power SRAM cells, focusing on their impact on device operation. Notwithstanding the continuous evolution of SRAM device integration, manufacturing processes…
View article: Comparing different solutions for testing resistive defects in low-power SRAMs
Comparing different solutions for testing resistive defects in low-power SRAMs Open
Low-power SRAM architectures are especially sensitive to many types of defects that may occur during manufacturing. Among these, resistive defects can appear. This paper analyzes some types of such defects that may impair the device functi…
View article: MAPbI3 Deposition by LV-PSE on TiO2 for Photovoltaic Application
MAPbI3 Deposition by LV-PSE on TiO2 for Photovoltaic Application Open
Hybrid perovskites are one of the most popular materials nowadays due to their very exclusive properties. To mitigate costs, complexity, and environmental impact, in this work, we have prepared methylammonium lead iodide (MAPbI 3 ) films b…
View article: Molecular dynamics simulations supporting the development of a continuum model of heat transport in nanowires
Molecular dynamics simulations supporting the development of a continuum model of heat transport in nanowires Open
We establish a suitable methodology for Molecular Dynamics (MD) simulations to provide reliable data for the development of continuum model extensions of Fouriers law, which reproduce effects arising from phonon confinement and interface s…