Crystallographic Defect

The lasers currently have a short wavelength, but Imec is looking to change that

Supercooled rare-earth barium copper oxide could be the magic ingredient that lets humanity finally make a successful fusion engine.

In its most expensive project to date, Germany's Cyber Agency (Cyberagentur) has awarded three different contracts to four quantum computing startups — Quantum Brilliance, ParityQC, ...

Silicon carbide CMOS is setting new standards in voltage and frequency

The quest for boundless energy takes an electrifying turn with this magic mineral.

Physicists at The City College of New York have developed a technique with the potential to enhance optical data storage capacity in diamonds. This is possible by multiplexing the storage in the spectral domain. The research by Richard G. Monge and Tom Delord, members of the Meriles Group in CCNY's Division of Science, is titled "Reversible optical data storage below the diffraction limit" and appears in the…

A team of MIT researchers has demonstrated a way to precisely control the size, composition, and other properties of nanoparticles key to the reactions involved in a variety of clean energy and environmental technologies.

The Quantum Systems Accelerator (QSA) pioneers studies to build and co-design the next generation of programmable quantum devices. An interdisciplinary team of scientists from QSA institutions, Lawrence Berkeley National Laboratory (Berkeley Lab), and the University of California, Berkeley (UC Berkeley), in collaboration with Los Alamos National Laboratory, conducted a series of experiments with a new type of…

A new publication in Opto-Electronic Science reports how high-quality diamonds empower narrowband deep ultraviolet photodetection.

Defects often limit the performance of devices such as light-emitting diodes (LEDs). The mechanisms by which defects annihilate charge carriers are well understood in materials that emit light at red or green wavelengths, but an explanation has been lacking for such loss in shorter-wavelength (blue or ultraviolet) emitters.

The next generation of 2D semiconductor materials doesn't like what it sees when it looks in the mirror. Current synthesizing approaches to make single-layer nanosheets of semiconducting material for atomically thin electronics develop a peculiar "mirror twin" defect when the material is deposited on single-crystal substrates like sapphire. The synthesized nanosheet contains grain boundaries that act as a mirror,…

Silicon (Si) photonics has recently emerged as a key enabling technology in many application fields thanks to the mature Si process technology, the large silicon wafer size, and Si optical properties. However, the inability of Si-based materials to efficiently emit light requires the use of other semiconductors for light sources.

The absolute internal quantum efficiency (IQE) of indium gallium nitride (InGaN) based blue light-emitting diodes (LEDs) at low temperatures is often assumed to be 100%. However, a new study from University of Illinois Urbana-Champaign Electrical and Computer Engineering researchers has found that the assumption of always perfect IQE is wrong: the IQE of an LED can be as low as 27.5%.

In a new paper published in eLight, a team of scientists led by Professors Haizheng Zhong and Yongyou Zhang from the Beijing Institute of Technology and Professor Haiyan Qin from Zhejiang University have discovered nonlocal effects in large semiconductor nanocrystals. They provide new strategies to achieve high-efficiency multiple excitons for quantum optics and energy conversation applications.

Visible Light Absorption of Titanium Dioxide Through Cerium Synchronous Doping in Anatase The introduction of rare earth elements into TiO2 can effectively improve the electron-hole separation of TiO2 and prolong the visible light response of TiO2. Cerium (Ce) shows variable valence states Ce3+/

The heavy use of fossil fuels for driving industrial processes and human activities has resulted in increasingly excessive emissions of anthropogenic CO2 into our atmosphere, surpassing the 400 ppm level. This exceedingly high concentration of atmospheric CO2 has led to a series of negative consequences for our planet's climate system. However, CO2 can be a strategic carbon resource for synthesizing valued…

According to a study published in Nature Materials, a collaborative research team from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences (CAS) and the University of Science and Technology of China has developed a research platform to study superconducting magnetic detection and magnetic phase transitions of hydrides under high pressure.

Physicists at the University of Wisconsin-Madison have directly measured the fluid-like flow of electrons in graphene at nanometer resolution for the first time. The results appear in the journal Science today.

Advances in computing power over the decades have come thanks in part to our ability to make smaller and smaller transistors, a building block of electronic devices, but we are nearing the limit of the silicon materials typically used. A new technique for creating 2D oxide materials may pave the way for future high-speed electronics, according to an international team of scientists.

Automated solutions are in the works, but they will take time to develop.