Semiconductor - Science topic

The main focus is on the current status of the application of microelectronics in different fields. The current state of research in microelectronics is shown more visually through two experiments with diodes and MOS transistors. Then through its application in integrated circuits and automatic control shows the importance of microelectronics in to...

Piezoelectric semiconductor fibers are the foundation of nanogenerators, nano-force sensors, and other nanodevices. Regulating the local piezopotential characteristics inside the PS fiber is crucial for its piezoelectric performance. However, due to the extremely small size of nanofibers, this is quite challenging. In this study, we propose a metho...

Over the past few decades, exciton-polaritons have attracted substantial research interest due to their half-light-half-matter bosonic nature. Coupling exciton-polaritons with magnetic orders grants access to rich many-body phenomena, but has been limited by the availability of material systems that exhibit simultaneous exciton resonances and magne...

InAlAs:Be/InGaAs superlattices grown at low temperatures were investigated in this study. To obtain the highest resistivity and mobility simultaneously, a growth temperature above 200 °C was applied. The electrical properties were conducted via Hall effect measurement and a photoresponse test. The experimental results demonstrate that the sample gr...

Nanostructured semiconductors have driven the research in electronic and optoelectronic devices in the new millennium era [...]

Cu2NiSnS4 (CNTS) as a promising quaternary semiconductor suitable for absorber layer in thin film solar cells because of their non toxic compositions and ingredients elements are earth abundant. Here, we have successfully deposited CNTS thin films onto glass substrates by the Spray Sandwich method. These thin films were only obtained at 300 °C with...

Based on density functional theory, structural, electronic, optical and thermoelectric properties of CaO and CaO:F mono-layer compounds have been investigated. Both structures have elastic stability and Young's and Shear's moduli of CaO:F are 57.78 (N/m) and 23.85 (N/m), which shows the resistance of these compounds against stress and strain. The r...

Inorganic semiconductors have a wide range of applications in various fields, including electronics, optoelectronics, photovoltaics, and even catalysis [...]

In recent years, semiconductor survey meters have been developed and are in increasing demand worldwide. This study aimed to investigate whether it is possible to calculate the time constant of the semiconductor survey meter using the X-ray equipment installed in each medical facility and whether it is possible to calibrate the semiconductor survey...

In recent years, inorganic flexible electronics technology has been widely researched as a promising field that enables semiconductor devices to combine excellent electrical and flexible properties for various electronic applications. However, rigid semiconductor materials are susceptible to fracture during service, leading to functional failure. T...

The stage of transporting semiconductor chips from the wafer to the support strip is crucial in the integrated circuit manufacturing process. This process can be modeled as a combinatorial optimization problem where the objective is to reduce the total distance the robotic arm must travel to pick up each chip and place it in its corresponding posit...

Recently, semiconductor nanograting layers have been introduced and their optical properties have been studied. Spectroscopic ellipsometry has shown that nanograting significantly modifies the dielectric function of c-Si layers. Photoluminescence spectroscopy reveals the emergence of an emission band with a remarkable peak structure. It has been ob...

The 29th International Conference on Amorphous and Nanocrystalline Semiconductors served as a continuation of the biennial conference that has been held since 1965 [...]

Single-crystal sapphire specimen (α-Al2O3) have been widely applied in the semiconductor industry, microelectronics, and so on. In order to shorten the production time and improve the processing efficiency of sapphire processing, an integrated fixed-abrasive tool (FAT) based on solid-phase reactions is proposed in this article. The optimal FAT comp...

Based on available datasets prepared by numerical simulations and machine learning, maps of properties for materials that have not yet been synthesized can be developed. These maps can be used to select promising materials for synthetic experiments. With a single objective function, the ranking of the optimal solutions can be simply obtained based...

The chemical complexity of organic contaminants (drugs, agrochemicals, and dyes) requires new, more advanced ways to remove them from water compared to the conventional treatment methods used. One such method is photocatalytic degradation. In this paper, the mechanism of degradation of harmful organic compounds using semiconductor materials with p...

We theoretically study the polarization and nonlinear effects of polariton parametric amplification and oscillation based on a semiconductor microcavity. The polaritons in the signal state can be adjusted by the polarizations, nonlinear strength, and phases of the light exciting the signal, pump and idler states. The signal amplification and depres...

The performance of FFC-NMR power supplies is evaluated not only considering the technique requirements but also comparing efficiencies and power consumption. Since the characteristics of FFC-NMR power supplies depend on the power circuit topology and on the control solutions, the control design is a core aspect for the development of new FFC system...

Ferromagnetic semiconductors (FMS) enable simultaneous control of both charge and spin transport of charge carriers, which have emerged as a class of highly desirable but rare material for applications in spin field‐effect transistors and quantum computing. Organic‐inorganic hybrid perovskite with high compositional adjustability and structural ver...

We report the fine periodic nanostructure formation process on metal and semiconductor surfaces in air with few-cycle 7-fs laser pulses and its physical mechanism. Using appropriate peak power densities and scanning speeds for the laser pulses, nanostructures could be formed on stainless steel and gallium arsenide (GaAs) with periods of 60–110 nm a...

The emergence of moiré materials with flat bands provides a platform to systematically investigate and precisely control the correlated electronic phases. Here we report on a rich phase diagram of interpenetrating Hofstadter states—also called Chern insulators—and electron solids in a twisted WSe2/MoSe2 heterobilayer using local electronic compress...

Silver(I) oxide was anodically formed in a deaerated 0.1 M KOH aqueous solution on Ag and Ag–Zn alloys (from 5 to 30 at.% of zinc) subjected to anodic selective dissolution in a deaerated 0.01 M HNO3 + 0.09 М KNO3 aqueous solution. Under these conditions, a layer is formed on the surface of the alloy enriched with silver and structural defects whos...

Despite dramatic improvements in the electronic characteristics of organic semiconductors, the low operational stability of organic field‐effect transistors hinders their direct use in practical applications. Although the literature contains numerous reports on the effects of water on the operational stability of organic field effect transistors, t...

We investigate theoretically the Josephson current through one semiconductor quantum dot (QD) coupled to triple nanowires (junctions) with Majorana bound states (MBSs) prepared at their ends. We find that not only the strength but also the period of the Josephson current flowing between the left and right Josephson junctions via the dot can be full...

The semiconductor industry is reaching a fascinating confluence in several evolutionary trends that will likely lead to a number of revolutionary changes in how computer systems are designed, implemented, scaled, and used. Since Moore’s Law, which has driven the evolution in systems for the last several decades, is imminently approaching real and s...

Photoluminescence (PL) is one of the commonly used methods to determine the energy gap ( $${E}_{\mathrm{g}}$$ E g ) of semiconductors. In order to use it correctly, however, the shape of the PL peak must be properly analyzed; otherwise, the value of $${E}_{\mathrm{g}}$$ E g is burdened with a large error. $${E}_{\mathrm{g}}$$ E g is often mistakenl...

Surface reconstruction plays a vital role in determining the surface electronic structure and chemistry of semiconductors and metal oxides. However, it has been commonly believed that surface reconstruction does not occur in van der Waals layered materials, as they do not undergo significant bond breaking during surface formation. In this study, we...

The purpose of this study is to investigate the phenomenon of self-organization of the dynamics of charge carriers in semiconductor structures. Investigate the basic model, give a numerical estimate for given parameters and propose its modification. Determine the dependence of the evaluation results on the control parameter. Consider the dynamics w...

As the main challenge for in-memory photonic computing, high-precision weight controlling will enable us to perform parallel multiply accumulate (MAC) with enhanced computing accuracy. Considering environmental factors such as fluctuation of temperature, it's difficult to accurately control the weight for photonic computing. To solve the problem ab...

A problem of determining the characteristics of a semiconductor can be reduced to the study of the quasi-variational inequality, [1] where the obstacle M(u) is the solution of an elliptic problem depending on u. We present here an hybrid finite element method for the computation of obstacle M(u) and we discuss some numerical aspects appearing in it...

Finding efficient and environmentally friendly semiconductor photocatalysts can effectively alleviate the energy crisis and environmental pollution. Based on first-principles calculations, this work focused on the electronic, Bader charge and optical properties of the TMDs/MN heterojunctions. The results showed that the AlN/WS2 and GaN/WS2 heteroju...

Solar hydrogen production by photocatalytic water splitting is studied to solve energy and environmental problems. It is estimated that practical implementation of this technology will require a photocatalytic water splitting system that is not only highly efficient in solar-to-hydrogen energy conversion but also cheap and scalable. Particulate pho...

Evidence shows that charge carriers in organic semiconductors self-localize because of dynamic disorder. Nevertheless, some organic semiconductors feature reduced mobility at increasing temperature, a hallmark for delocalized band transport. Here we present the temperature-dependent mobility in two record-mobility organic semiconductors: dinaphtho[...

Two-dimensional intrinsic ferromagnetic materials have received considerable attention for their potential applications in spintronic devices. The possible defects during experimental synthesis can affect the properties of magnets. However, the study of vacancies in two-dimensional ferromagnetic CrOCl is still lacking. Based on first-principles cal...

As the prevailing non-volatile memory (NVM), flash memory offers mass data storage at high integration density and low cost. However, due to the ‘speed-retention-endurance’ dilemma, their typical speed is limited to ~microseconds to milliseconds for program and erase operations, restricting their application in scenarios with high-speed data throug...

RuBr 2 RuBr 2 Valleytronic materials can provide new degrees of freedom to future electronic devices. In this work, the concepts of the ferrovalley metal (FVM) and valley gapless semiconductor (VGS) are proposed, which can be achieved in valleytronic bilayer systems by electric field engineering. In valleytronic bilayer systems, the interaction bet...

Na 2 MoO 4 and Na 2 WO 4 are isostructural semiconductors, belonging to the spinel class. They have interesting properties and find applications in numerous sectors. These properties can be tuned by controlling the composition of their solid solutions. Here, different methods to obtain these compounds are presented, both wet and solid-state synthes...

The current investigation aims at the derivation of the basic equations of nonlocal elasticity using the Green’s function technique, in which the analytical expressions have been obtained using contour integration. An investigation of the photo-thermoelastic interaction is analyzed for an infinite semi-conductor with a cylindrical cavity. The surfa...

Sustainable green electronics is increasingly needed for a multitude of new applications that will fill daily life in the coming decades. The search for new semiconductor materials that can be used in light, flexible, ultra-thin and scalable devices has been given great attention, and especially directed towards organic materials, such as small mol...

La formación práctica ocupa un lugar relevante dentro de las exigencias docentes, sobre todo con una importancia marcada en las carreras tecnológicas. La metodología habitual necesita la presencia física del alumno en el laboratorio para poder realizar las prácticas y el número de sesiones de prácticas libres está limitado por el tiempo de permanen...

Liquid phase deposition is a cost-effective and energy-efficient method for obtaining TiO2 films at low temperatures. This work demonstrates the use of a multifunctional template consisting of grafted gallic acid (GA) and hexamethylenediamine (HD) on a Ti substrate to regulate the deposition of TiO2 films. X-ray diffraction characterization shows t...

In the last years space technologies have made giant leaps, increasing the feasibility of human exploration and colonization of other celestial bodies. The Moon and Mars have become appealing in these terms, but autonomy, adaptability and high reliability are inevitably needed in long-term missions. Furthermore, new generation spacecraft will have...

The semiconductor industry is one of the most rapidly growing in the modern era. It is important to analyse price movements of the raw materials that make up semiconductors to analyse the semiconductor industry as a whole. The goal of this project is to provide a realistic forecast based on historically available data to predict the future values o...

In the recent past, there has been an increase in the use of semiconductor nanostructures that convert solar energy to electrical energy. This has encouraged the development of better and more efficient solar cells (SCs). Numerous investigations have been conducted into synthesizing novel semiconductor materials and tuning the electronic properties...

In this paper, a novel single-phase, 15-level asymmetrical multilevel inverter that is designed for renewable energy applications is introduced. This inverter topology, designed with only 8 semiconductor switches, features a lower number of switches when compared to other 15-level inverters. A comprehensive examination of different multilevel carri...

More than half of the world's population is affected by waterborne illnesses, which have become a severe public health concern worldwide. Around 1 billion people drink contaminated water, resulting in 2.2 million deaths every year. According to a UNICEF assessment in 2010, children under the age of five are more vulnerable to diarrheal diseases, wh...

We investigate the electronic properties of a semiconductor quantum ring with an elliptical shape and non-uniform height, allowing for distributed quantum-dot-like bulges along its perimeter. The adiabatic approximation and the finite element method are combined to calculate the allowed electron states in the structure under the effective mass appr...

Electroluminescence of metal halide perovskites has been widely reported via the fabrication and optimization of light-emitting diodes and light-emitting transistors. Light-emitting transistors are particularly interesting owing to the additional control of the gate voltage on the electroluminescence. In this work, the design of a microcavity, with...

Membrane external-cavity surface-emitting lasers (MECSELs) are at the forefront of pushing the performance limits of vertically emitting semiconductor lasers. Their simple idea of using just a very thin (hundreds of nanometers to few microns) gain membrane opens up new possibilities through uniform double side optical pumping and superior heat extr...

Membrane external-cavity surface-emitting lasers (MECSELs) are at the forefront of pushing the performance limits of vertically emitting semiconductor lasers. Their simple idea of using just a very thin (hundreds of nanometers to few microns) gain membrane opens up new possibilities through uniform double side optical pumping and superior heat extr...

Near-infrared (NIR) and shortwave infrared (SWIR) image technologies have gained significant attention for emerging applications. However, the absorption edge of Si CMOS image sensors limits their effectiveness beyond the 1000 nm wavelength range. Solution-processed organic semiconductors, with their unique photon-to-electron responses spanning fro...

Van der Waals dielectrics are fundamental materials for condensed matter physics and advanced electronic applications. Most dielectrics host isotropic structures in crystalline or amorphous forms, and only a few studies have considered the role of anisotropic crystal symmetry in dielectrics as a delicate way to tune electronic properties of channel...

Organic polymer semiconductor materials are conveniently tuned to energy levels because of their good chemically modifiable properties, thus enhancing their carrier transport capabilities. Here, we have designed and prepared a polymer with a donor-acceptor structure and tested its potential as a p-type material for organic field-effect transistor (...

As a biocompatible semiconductor composed of abundant elements, ZnO, in the form of nanowires, exhibits remarkable properties, mainly originating from its wurtzite structure and correlated with its high aspect ratio at nanoscale dimensions [...]

This study pioneers Convolutional Neural Networks (CNNs) to automate wafer map failure recognition, enhancing product performance and yield in semiconductor manufacturing. Leveraging the WM811K dataset, we randomly selected 90 images from each of nine failure classes. We introduce a multi-class classification, CNN model and rigorously evaluate it a...

The total energy is the most fundamental quantity in ab initio studies. To include electron-phonon interaction (EPI) contribution to the total energy, we have recast Allen's equation, for the case of semiconductors and insulators. This equivalent expression can be computed using available software, leading to more accurate total energy. We calculat...

We've studied the effect of uniaxial deformation along the trigonal axis of a bismuth crystal on its band structure using the DFT modeling. A transition to the semiconductor state upon compressive deformation along the trigonal axis have been found.

The small footprint of semiconductor qubits is favourable for scalable quantum computing. However, their size also makes them sensitive to their local environment and variations in gate structure. Currently, each device requires tailored gate voltages to confine a single charge per quantum dot, clearly challenging scalability. Here, we tune these g...

Zn2GeO4 is considered a very promising alternative to current luminescent semiconductors. Previous results suggest that its emitted wavelength may depend on different variables, such as particle size and morphology, among others. In this work, we have prepared pure and highly homogeneous Zn2GeO4 nanorods under hydrothermal synthesis conditions with...

Semiconductor spin qubits demonstrated single-qubit gates with fidelities up to 99.9% benchmarked in the single-qubit subspace. However, tomographic characterizations reveals non-negligible crosstalk errors in a larger space. Additionally, it was long thought that the two-qubit gate performance is limited by charge noise which couples to the qubits...

The analysis of Local thermo-EMF in p-n junctions made it possible to reveal the phenomenological features of ballistic thermoelectricity. By the Curie Symmetry Principle, in polar structures of p-n junctions, the thickness of which is of the order of the electron mean free path, the contribution of ballistic effects to the formation of the total E...

Correction for 'Lone pair driven anisotropy in antimony chalcogenide semiconductors' by Xinwei Wang et al., Phys. Chem. Chem. Phys., 2022, 24, 7195-7202, https://doi.org/10.1039/D1CP05373F.

In this research, a single-phase, 31-level asymmetrical multilevel inverter that is designed for renewable energy applications is introduced. This inverter topology, designed with only 10 semiconductor switches, features a lower number of switches when compared to other 31-level inverters. A comprehensive examination of different multilevel carrier...

The work aims at designing a system that detects X-Ray and alerts the user through alarm. It aims to save people life from harm full rays like X and Gamma ray. And applied in medical imaging room for Technicon from adsorb overdose during his work so if there is an alarm, technician must stop take dose. Detector is a powerful and reliable tool used...

Semiconductor nanowires play a very important role in optoelectronic devices due to their excellent photoelectric properties. However, the intermixing of zinc blende and wurtzite crystal phases limits the development of GaAs nanowires, and how to obtain pure phase GaAs nanowires has become a research hotspot. In this study, the Si substrate is pre-...

Controlling the relaxation dynamics of excitons is key to improve the efficiencies of semiconductor--based applications. Confined semiconductor nanocrystals (NCs) offer additional handles to control the properties of excitons, for example, by changing the size or the shape of the NC, resulting in a mismatch between the excitonic gaps and the phonon...

Antiferromagnets (AFMs) are promising platforms for the transmission of quantum information via magnons (the quanta of spin waves), offering advantages over ferromagnets with regard to dissipation, speed of response, and immunity to external fields. Recently, it was shown that in the insulating van der Waals (vdW) semiconductor, CrSBr, strong spin-...