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Current Semiconductors News and Events, Semiconductors News Articles.
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Medical robotic hand? Rubbery semiconductor makes it possible
A medical robotic hand could allow doctors to more accurately diagnose and treat people from halfway around the world, but currently available technologies aren't good enough to match the in-person experience. Now researchers have reported that they have designed and produced a smart electronic skin and a medical robotic hand capable of assessing vital diagnostic data by using a newly invented rubbery semiconductor. (2020-09-16)

Theoretical prediction of reverse intersystem crossing for organic semiconductors
A team of Japanese researchers developed a method to predict rate constants of reverse intersystem crossing (RISC) associated with light emission efficiency of organic semiconductors used for OLED through quantum chemical calculations with computers. (2020-09-08)

Continuous and stable lasing achieved from low-cost perovskites at room temperature
New research from Kyushu University and Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, shows that lasing for over one hour at room temperature can be achieved from low-cost quasi-2D perovskite materials by properly managing losses caused by triplet excitons. This new understanding will help lead the way toward a new class of easily fabricated lasers based on perovskites. (2020-09-02)

Standing the test of time with a perfect partner
Identifying the ideal co-catalyst can significantly extend the working lifetime of solar fuel-generating photocatalysts. (2020-09-01)

Graphene sensors find subtleties in magnetic fields
Cornell researchers used an ultrathin graphene ''sandwich'' to create a tiny magnetic field sensor that can operate over a greater temperature range than previous sensors, while also detecting miniscule changes in magnetic fields that might otherwise get lost within a larger magnetic background. (2020-08-20)

Scientists discover new class of semiconducting entropy-stabilized materials
The design of novel materials with superior characteristics by entropy stabilization is a very dynamic emerging research area in materials science. However, despite recent advances in entropy-stabilized metals and insulating ceramics targeted for structural applications, there is still a dearth of high-entropy semiconductors, which poses a major obstacle for the adoption of high-entropy materials in semiconducting functional applications. Our study aims to realize a novel class of the semiconducting entropy-stabilized chalcogenide alloys. (2020-07-31)

'Etch-a-Sketching' critical p-n nano-junctions for 2D Semiconductor diode
Elisa Riedo, professor at the New York University (NYU) Tandon school of Engineering led an international team that used thermal scanning probe lithography (t-SPL) to fabricate state-of-the-art ''p-n junctions'' on a single atomic layer of molybdeunum disulfide (MoS2) a transition metal dichalcogenide. The work, 'Spatial defects nanoengineering for bipolar conductivity in MoS2,' appears in Nature Communications. (2020-07-28)

Novel "dual-resonant method" in 2D materials can spur advances in the field of photonics
Scientists at Daegu Gyeongbuk Institute of Science and Technology, Korea, have developed a new process that provides an ultrafast process of photon generation in two-dimensional materials. This process can potentially fuel the development of advanced optical devices in the field of photonics. (2020-07-09)

Porous graphene ribbons doped with nitrogen for electronics and quantum computing
A team of physicists and chemists has produced the first porous graphene ribbons in which specific carbon atoms in the crystal lattice are replaced with nitrogen atoms. These ribbons have semiconducting properties that make them attractive for applications in electronics and quantum computing, as reported by researchers from the Universities of Basel, Bern, Lancaster and Warwick in the Journal of the American Chemical Society. (2020-07-08)

2D semiconductors found to be close-to-ideal fractional quantum hall platform
Columbia University researchers report that they have observed a quantum fluid known as the fractional quantum Hall states (FQHS), one of the most delicate phases of matter, for the first time in a monolayer 2D semiconductor. Their findings demonstrate the excellent intrinsic quality of 2D semiconductors and establish them as a unique test platform for future applications in quantum computing. (2020-07-06)

Red-light LEDs for next-generation displays
Novel red LEDs are more temperature stable than those made using the conventional semiconductor of choice. (2020-07-05)

World's widest graphene nanoribbon promises the next generation of miniaturized electronics
Standard semiconductor technology is reaching its limit in miniaturization, but the demand for smaller electrical devices with higher performance continues to grow. The research group introduced the widest graphene nanoribbon prepared by the bottom-up approach with electrical properties surpassing those of silicon semiconductors, promising a new generation of miniaturized electronic devices. (2020-06-30)

Extensive review of spin-gapless semiconductors: Next-generation spintronics candidates
An Australian has published an extensive review of spin-gapless semiconductors (SGSs), a new class of 'zero bandgap' materials which have fully spin polarised electrons and holes, and first proposed in 2008 by the review team's lead, Professor Xiaolin Wang (University of Wollongong). The study tightens the search for materials that would allow for ultra-fast, ultra-low energy 'spintronic' electronics with no wasted dissipation of energy from electrical conduction. (2020-06-26)

Catalyzing a green future
Highly modular metal-organic framework-based materials show great potential for photocatalytic hydrogen production. (2020-06-22)

Is teleportation possible? Yes, in the quantum world
Researchers at the University of Rochester are exploring new ways of creating quantum-mechanical interactions between distant electrons. The research marks an important advance in quantum computing. (2020-06-19)

Exploring mass dependence in electron-hole clusters
A study published in EPJ B reveals that the behaviour of one type of three-particle cluster displays a distinct relationship with the ratio between the masses of its particles. (2020-06-18)

Printed perovskite LEDs
A team of researchers from the Helmholtz-Zentrum Berlin (HZB) and Humboldt-Universit├Ąt zu Berlin has succeeded for the first time in producing light-emitting diodes (LEDs) from a hybrid perovskite semiconductor material using inkjet printing.This opens the door to broad application of these materials in manufacturing many different kinds of electronic components.The scientists achieved the breakthrough with the help of a trick: ''inoculating'' (or seeding) the surface with specific crystals. (2020-06-12)

Tuning the interfacial properties of 2D heterophases though tilt-angles
For devices based on atomically thin two-dimensional (2D) materials, the properties of the interface play important roles in determining their performances. Chinese scientists correlated the electronic states of the 2D 1T'/2H-MoTe2 (metallic/semiconducting) interface with its atomic structures and found that its contact characteristics are tilt angle-dependent, providing useful guidelines to tune the local band structure and contact resistance via phase engineering. (2020-06-02)

Boosting energy efficiency of 2D material electronics using topological semimetal
SUTD researchers discover a new way to boost the energy efficiency of 2D semiconductor electronics by synergizing 2D materials and topological semimetals. (2020-06-02)

2D molecular crystals modulating electronic properties of organic semiconductors
Recently, researchers report a controllable surface doping strategy utilizing 2D molecular crystals (2DMCs) as dopants to boost the mobility and to modulate the threshold voltage of OFETs. The amount of dopants, i.e., the thickness of the 2DMCs, is controlled at monolayer precision. A prominent increase of the average mobility and a reduction of the threshold voltage are observed. Meanwhile, high on/off ratios of up to 10E8 are retained (2020-05-19)

A theoretical boost to nano-scale devices
Researchers with the School of Electrical Engineering at KAIST have developed a new approach to the underlying physics of semiconductors. They calculated the quasi-Fermi levels in molecular junctions applying an initio approach. (2020-05-17)

Designing flexible and stretchable single crystal electronic systems
Researchers at the University of Illinois at Urbana-Champaign in collaboration with a Purdue team have discovered that certain crystals are more flexible and stretchable compared to current materials used for electronic applications. These new materials could therefore be used for making sensors and in robotics. (2020-05-13)

Future information technologies: 3D quantum spin liquid revealed
Quantum Spin Liquids are candidates for potential use in future information technologies. So far, Quantum Spin Liquids have usually only been found in one or two dimensional magnetic systems only. Now an international team led by HZB scientists has investigated crystals of PbCuTe2O6 with neutron experiments at ISIS, NIST and ILL. (2020-05-11)

Pure red LEDs fulfill a primary goal
First high-intensity, low-voltage red LEDs made from nitride semiconductors. (2020-05-06)

Shedding new light on nanolasers using 2D semiconductors
Cun-Zheng Ning, a professor of electrical engineering in the Ira A. Fulton Schools of Engineering at Arizona State University, and collaborators from Tsinghua University in China discovered a process of physics that enables low-power nanolasers to be produced in 2D semiconductor materials. Understanding the physics behind lasers at nanoscale and how they interact with semiconductors can have major implications for high-speed communication channels for supercomputers and data centers. (2020-05-06)

Supercapacitor promises storage, high power and fast charging
A new supercapacitor based on manganese oxide could combine the storage capacity of batteries with the high power and fast charging of other supercapacitors, according to researchers at Penn State and two universities in China. (2020-05-05)

The future of semiconductors is clear
Mobility is a key parameter for semiconductor performance and relates to how quickly and easily electrons can move inside a substance. Researchers have achieved the highest mobility among thin films of tin dioxide ever reported. This high mobility could allow engineers to create thin and even transparent tin dioxide semiconductors for use in next-generation LED lights, photovoltaic solar panels or touch-sensitive display technologies. (2020-04-22)

Tandem solar cell world record: New branch in the NREL chart
A special branch in the famous NREL-chart for solar cell world records refers to a newly developed tandem solar cell by HZB teams. The world-record cell combines the semiconductors perovskite and CIGS to a monolithic 'two-terminal' tandem cell. Due to the thin-film technologies used, such tandem cells survive much longer in space and can even be produced on flexible films. The new tandem cell achieves a certified efficiency of 24.16 percent. (2020-04-14)

Researchers demonstrate a platform for future optical transistors
Photons do not interact with each other well, which creates a big problem for microelectronics engineers. A group of researchers from ITMO University, together with colleagues, have come up with a new solution to this problem by creating a planar system where photons couple to other particles, which enables them to interact with each other. (2020-04-09)

Researchers develop one-way street for electrons
The work has shown that these electron ratchets create geometric diodes that operate at room temperature and may unlock unprecedented abilities in the illusive terahertz regime. (2020-04-09)

Clemson researcher's novel MOF is potential next-gen semiconductor
Clemson professor Sourav Saha demonstrated a novel double-helical metal organic framework architecture in a partially oxidized form that conducts electricity, potentially making it a next-generation semiconductor. (2020-03-23)

A nanoscale laser made of gold and zinc oxide
Tiny particles composed of metals and semiconductors could serve as light sources in components of future optical computers, as they are able to precisely localize and extremely amplify incident laser light. A team from Germany and Sweden led by Prof. Dr. Christoph Lienau and Dr. Jin-Hui Zhong from the University of Oldenburg has now explained for the first time how this process works. The study is published in the current issue of the journal Nature Communications. (2020-03-19)

New mechanism of optical gain in two-dimensional material requires only extremely low input power
Optical gain is a prerequisite for signal amplification in an optical amplifier or laser. It typically requires high level of current injection in conventional semiconductors. By exploring an intricate balance and conversion of excitons and trions in atomically-thin two-dimensional materials, the authors found a new gain mechanism that requires input power several orders of magnitude lower than in conventional semiconductors. This new gain mechanism could potentially enable lasers to be made with extremely low input power. (2020-03-19)

Shedding light on optimal materials for harvesting sunlight underwater
There may be many overlooked organic and inorganic materials that could be used to harness sunlight underwater and efficiently power autonomous submersible vehicles, report researchers at New York University. Their research, publishing March 18 in the journal Joule, develops guidelines for optimal band gap values at a range of watery depths, demonstrating that various wide-band gap semiconductors, rather than the narrow-band semiconductors used in traditional silicon solar cells, are best equipped for underwater use. (2020-03-18)

Room-temperature bonded interface improves cooling of gallium nitride devices
A room-temperature bonding technique for integrating wide bandgap materials such as gallium nitride (GaN) with thermally-conducting materials such as diamond could boost the cooling effect on GaN devices and facilitate better performance through higher power levels, longer device lifetime, improved reliability and reduced manufacturing costs. (2020-03-11)

Atomic vacancy as quantum bit
Physicists from W├╝rzburg for the first time have experimentally observed spin centers in two-dimensional materials. Such centers can act as quantum bits -- even at room temperature. (2020-03-02)

How low can you go? Lower than ever before
Researchers at the National Institute of Standards and Technology (NIST) have made the most sensitive measurements to date of how quickly electric charge moves in silicon, a gauge of its performance as a semiconductor. (2020-02-26)

Having an eye for colors: Printable light sensors
Cameras, light barriers, and movement sensors have one thing in common: they work with light sensors that are already found in many applications. In future, these sensors might also play an important role in telecommunications, as they enable data transmission via light. At the InnovationLab in Heidelberg, scientists of Karlsruhe Institute of Technology (KIT) succeeded in making decisive progress: printable light sensors that can see colors. The results are now reported in Advanced Materials. (2020-02-24)

Green chemistry of fullerene: Scientists invented an environmentally friendly way to realize organic
Scientists from the Skoltech Center for Energy Science and Technology (CEST) and the Institute for Problems of Chemical Physics of Russian Academy of Sciences have developed a novel approach for preparing thin semiconductor fullerene films. The method enables fabrication of organic electronics without using toxic organic solvents and costly vacuum technologies, thus reducing the environmental risks and making organic electronics more accessible. The results of their study were published in the Journal of Materials Chemistry C. (2020-02-19)

A shift in shape boosts energy storage
More efficient photocatalysts could unlock the potential of solar energy. (2020-02-17)

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