Articles tagged with Semiconductors
A study at Nagoya University reveals the formation of a superlattice structure in gallium nitride and magnesium, leading to enhanced hole transport and compressive strain. This breakthrough has potential applications in improving GaN-based devices for energy-efficient electronics.
A WPI researcher has received a CAREER Award to develop new technologies to monitor and protect computer chips from malicious attacks. The project aims to create better metrics to verify the integrity of components and advance understanding of side-channel attacks.
Researchers at the University of Michigan have developed a new thermophotovoltaic cell that can recover significantly more energy from heat batteries, increasing efficiency to 44%. The device uses air bridges to trap photons with the right energies, allowing for the recycling of useless photons and improving overall performance.
Scientists studied gallium nitride devices under extreme temperatures and found that ohmic contacts remained structurally intact even at 500 degrees Celsius. This breakthrough could lead to the development of high-performance transistors for Venus exploration and other applications.
Researchers aim to create polymers that can form the basis of effective sensors for applications in physiological, environmental, and Internet of Things monitoring. The goal is to increase energy efficiency and broaden material choices, enabling devices to operate at low voltage and interact with ions and transport ionic charges.
Researchers at CDMF and CINE developed a novel plasma treatment approach for antimony tri-selenide films, making them hydrophilic and improving their photoelectroactivity. This enhancement enables the material to produce hydrogen gas through solar-driven water splitting.
Researchers have developed a new method to study slow electrons in solids, allowing for the deciphering of previously inaccessible information. By combining data from fast and slow electrons, scientists can now investigate how electrons release energy in their interaction with materials, crucial for applications such as cancer therapy ...
A new, low-cost, high-efficiency photonic integrated circuit has been developed using lithium tantalate technology. The breakthrough platform offers scalable and cost-effective manufacturing of advanced electro-optical PICs, paving the way for volume manufacturing.
The article reviews static and dynamic approaches to adjust Schottky barrier height in semiconductor devices. Dynamic techniques include surface modification and external electric fields.
Researchers have discovered a promising approach to engineer semiconductors by tweaking isotopes, which can influence optical and electronic properties. The study demonstrates that small changes in isotope masses can shift the optical bandgap, enabling tunability for designing new devices.
A team from Pohang University of Science & Technology has developed a memory transistor that can adjust its threshold voltage through photocrosslinking. The innovation combines two molecules with a polymeric semiconductor to form a stable bond, enabling precise control of the semiconductor layer's structure.
Researchers from Yokohama National University have successfully induced atomic excitation in a two-dimensional semiconductor material using ultrafast terahertz pulses. This method, known as sum-frequency excitation, holds promise for controlling electronic states and developing valleytronics and electronic devices.
Researchers at the University of Washington have solved a long-standing chemical mystery in organic electrochemical transistors (OECTs), which allow current to flow in devices like implantable biosensors. The study reveals that OECTs turn on via a two-step process, causing a lag, and off through a simpler one-step process.
A new atomically-thin material has been discovered that can switch between an insulating and conducting state by controlling the number of electrons. This property makes it a promising candidate for use in electronic devices such as transistors.
Researchers at the University of Cambridge have developed low-cost light-harvesting semiconductors that power devices for converting water into clean hydrogen fuel using sunlight. By growing copper oxide crystals in a specific orientation, they improved performance by an order of magnitude and increased stability.
A German-Indian research team has achieved a significant breakthrough in developing miniaturized optical isolators by utilizing ultra-thin two-dimensional materials. The researchers successfully rotated the polarization of visible light by several degrees under small magnetic fields, paving the way for on-chip integration of optical co...
A new NIR phosphor with broadband emission, high luminous efficiency, and thermal stability has been developed for multi-functional applications. The phosphor is composed of Cr³⁺ activated in Y₂Mg₂Al₂Si₂O₁₂ host materials, showing potential for night visualization, bio-imaging, and non-intrusive detection.
Researchers have created a probabilistic computer prototype that combines CMOS with stochastic nanomagnets, achieving superior computational performance and energy-efficiency. The new technology reduces area and energy consumption by four and three orders of magnitude compared to current CMOS circuits.
Scientists at Linköping University have created sheets of gold only a single atom layer thick, termed goldene. This material has given gold new properties that can make it suitable for applications such as carbon dioxide conversion, hydrogen production, and selective production of value-added chemicals.
Researchers upgraded a photoelectron momentum microscope to use two undulator beamlines, enabling element-selective measurements and precise analyses of valence orbitals. This innovation provides deeper insights into the behavior of electrons in materials, advancing fields like condensed matter physics and materials science.
A game-based semiconductor curriculum is being developed for high school students, bridging the knowledge gap between technology and career options. The project aims to inspire future semiconductor professionals through online games, workshops, and industry field trips.
Researchers at KAIST have developed a novel ultra-low power memory device that can replace existing memory or be used in implementing neuromorphic computing. The new phase change memory device consumes 15 times less power than conventional devices, enabling the development of low-cost and energy-efficient artificial intelligence hardware.
A team of researchers has created a new photocatalyst that can effectively remove pollutants from water. The Mn₀․₅Cd₀․₅S/BiOBr S-scheme photocatalyst features rich oxygen vacancies, which improve its photocatalytic performance.
Researchers at DGIST created a three-terminal neuromorphic device that stores multiple data levels like neurons, achieving high efficiency and speed. The device responds 10,000 times faster than human synapses and consumes very little energy.
Researchers at DGIST have developed a new manufacturing technology that enables the production of high-quality oxide films and effective patterning at low temperatures. The technology is expected to be used in next-generation computing systems, overcoming existing shortcomings.
A semiconductor device called a Z-source inverter can rapidly reduce voltage and current in the case of a short-circuit or open-circuit fault, protecting against power surges and fires. This innovation can be used to retrofit existing infrastructure and create a safer energy grid.
Researchers have developed a scalable, fully-coupled annealing processor that outperforms simulating a fully coupled Ising system on a PC by 2,306 times. The processor incorporates 4096 spins and uses parallelized capabilities for accelerated problem-solving.
Researchers developed ultra-thin defect-free semiconducting fibers, over 100 meters long, which can be woven into fabrics. The fibers demonstrate excellent electrical and optoelectronic performance, enabling various applications such as wearable electronics and sensors.
Researchers at Argonne National Laboratory have developed a new technique to precisely modulate electron flow in microelectronic devices, enabling lower power consumption and increased efficiency. The 'redox gating' method allows for the control of electron flow at low voltages, preventing damage to the system.
Scientists at Argonne National Laboratory have developed a nanocryotron, a prototype for an on-off switch that can amplify weak electrical signals from tiny particles in collider experiments. The device could help facilitate the operation of new particle colliders and improve the accuracy of observations.
The team's innovative design enables ultra-compact quasi-true-time-delay technology, increasing data rate and channel capacity by nearly doubling that of conventional wireless arrays. This breakthrough could lead to faster service and more data transmission for cellphone users.
A team from Osaka University's SANKEN Institute used the shortcuts to adiabaticity (STA) method to speed-up the adiabatic evolution of spin qubits. The spin flip fidelity after pulse optimization reached up to 97.8%. This method may be useful for fast and high-fidelity quantum control in other systems.
Researchers have developed three-dimensional processors that significantly enhance the efficiency of transmitting vast amounts of data across the globe. The new approach uses semiconductor technology to propel wireless communication into a new dimension, offering compactness and efficiency in data transmission.
A KAIST team developed an insect-mimicking semiconductor that mimics the optic nerve of insects to detect motion. The device operates at high efficiency and ultra-high speeds, and has been applied to a neuromorphic computing system for predicting vehicle paths. It achieved 92.9% less energy consumption compared to existing technology.
Researchers at Kyoto University have determined the magnitude of spin-orbit interaction in acceptor-bound excitons in a semiconductor. The study revealed two triplets separated by a spin-orbit splitting of 14.3 meV, supporting the hypothesis that two positively charged holes are more strongly bound than an electron-and-hole pair.
Researchers engineered the electron density of Pd single atoms with twinned Pd nanoparticles, creating strong electronic metal-support interactions for efficient CO2 photoreduction. The team found that Pd-TPs served as an electron donor, enriching electron density on catalytic centers and accelerating carbonyl desorption.
Researchers have developed a novel 'nano active control platform' to control excitons and trions, providing valuable insights into the optical properties of two-dimensional semiconductors. The breakthrough discovery enables real-time analysis of nano-light properties with exceptional spatial resolution.
Researchers have developed a method called mask wafer co-optimization (MWCO) that allows for the creation of curved shapes using variable-shaped beam mask writers. This technique reduces wafer variation by 3x and improves the process window by 2x compared to existing methods.
Scientists use a special microscope to break up the bond between electrons and holes in semiconductors, revealing that hole interactions determine charge transfer processes. The findings have implications for future computer and photovoltaic technologies.
Scientists have successfully discovered the mechanism of trion generation using a tip-enhanced cavity-spectroscopy system. This approach enables nanoscale control and investigation of trion emission properties.
Researchers have successfully induced and controlled polarization states within metals using flexoelectric fields. This method has the potential to mitigate power losses attributed to semiconductors and extend battery lifespan in electronic devices.
Researchers at Brookhaven National Laboratory have developed a universal method for producing functional 3D metallic and semiconductor nanostructures using DNA. The new method produces robust nanostructures from multiple material classes, opening opportunities for 3D nanoscale manufacturing.
The researchers designed a means to engineer single-nanometer magnetic tunnel junctions with a CoFeB/MgO stack structure, allowing them to control the shape and interfacial anisotropies independently. This enables the MTJ performance to be tailored for applications ranging from retention-critical to speed-critical.
Researchers developed a carbon-based tunable metasurface absorber with an ultrawide, tunable bandwidth in the THz range. The absorber boasts high absorption efficiency and insensitivity to polarization angles, paving the way for advanced technological applications.
A team of researchers from Chiba University introduces a new method of controlled deposition, enabling the creation of stable surface layers with controllable polarization. This approach is expected to improve the efficiency and lifetime of OLED materials, as well as pave the way for the development of new organic devices.
Engineers have discovered a method to increase the stability of perovskite solar cells using bulky additives, which could enable the production of cheaper solar panels. The study suggests that larger molecules with specific configurations are most effective at preventing defects in the cells.
Researchers have successfully synthesized a new material that exhibits self-recoverable near-infrared (NIR) mechanoluminescence, a property useful for biomedical imaging and other applications. The material's mechanism is attributed to its piezoelectricity, which generates excited states in Cr³⁺ ions upon mechanical stimulation.
A team of researchers led by Walter de Heer at Georgia Institute of Technology has created a functional graphene semiconductor with 10 times the mobility of silicon. This breakthrough technology could enable smaller and faster devices, as well as applications for quantum computing.
Researchers propose a new method using titanium dioxide as a photocatalyst for synthesizing thiochromenopyrroledione derivatives in blue light. The approach yielded 20 sulfur-containing heterocyclic compounds with moderate-to-high yield.
A team of researchers has designed a unique n-TiO2/BaTiO3/p-TiO2 heterojunction that couples with the piezoelectric effect to overcome charge separation and transfer limitations. The design achieves higher photocurrent density than traditional p-n junctions, enabling more efficient photoelectrochemical water splitting.
Researchers at Osaka Metropolitan University fabricated GaN transistors using diamond substrates, achieving more than twice the heat dissipation of SiC-based transistors. This novel technology has the potential to revolutionize power and radio frequency electronics with improved thermal management capabilities.
A team of scientists has developed a method to synthesize large-area 2D materials with atomic thickness, exposing single facets. These samples exhibit high crystallinity and ordered domain orientation, making them ideal candidates for studying facet-dependent properties.
Researchers have found a superconducting material that can be controlled to switch its properties on and off, potentially leading to more efficient large-scale computing. The discovery could enable the creation of energy-efficient switchable superconducting circuits, revolutionizing industry electronics.
Researchers at Singapore University of Technology and Design propose a new unifying framework to identify low-risk materials for further development. The team screened 3,000 entries in the materials database to find 25 candidate materials that exhibit high performance and are sustainable at the material level.
Purdue University researchers have found that polaritons can contribute a larger share of thermal conductivity in semiconductors, overcoming phonon limitations. By understanding how to design materials and structures, manufacturers can incorporate these polariton-based nanoscale heat transfer principles into chip designs.
Researchers have successfully fabricated a self-assembling photonic cavity with atomic-scale confinement, bridging the gap between nanoscopic and macroscopic scales. The cavities were created using a novel approach that combines top-down and bottom-up fabrication techniques, enabling unprecedented miniaturization.
Researchers at the University of Sydney have invented a compact silicon semiconductor chip integrating electronics with photonic components, significantly expanding radio-frequency bandwidth and filter control. The new technology has potential applications in advanced radar, satellite systems, wireless networks, and telecommunications,...
Researchers will incorporate advanced semiconductor technologies and AI into a millimeter-wave radio system to increase bandwidth while reducing energy consumption. The project aims to save tens to hundreds of terawatt-hours of energy per year, contributing to climate change mitigation.
Researchers at the University of Illinois have developed a diamond semiconductor device with the highest breakdown voltage and lowest leakage current. The device operates at high voltages and currents without losing electrical performance, making it suitable for applications such as solar panels and wind turbines.
Researchers at University of Illinois developed new semiconductor materials that can harness the power of chirality, a non-superimposable mirror image. The study found that subtle molecular changes can modulate chiral helical assemblies, leading to new optical, electronic, and mechanical properties.