Semiconductors are physical systems whose electrical conductivity lies between that of conductors and insulators and is strongly tunable by temperature, impurity concentration, and external fields. Their behavior is governed by band structure, featuring a finite band gap between valence and conduction bands that enables controlled carrier generation and recombination. Charge transport arises from electrons and holes, with densities modulated via doping, optical excitation, or electrostatic gating. Semiconductor systems support phenomena such as drift, diffusion, and quantum confinement, and they serve as the foundational medium for devices like diodes, transistors, and optoelectronic components through engineered heterostructures, junctions, and nanostructures.
Scientists from the Department of Physical Chemistry at the Fritz Haber Institute have made an innovative discovery in nanoscale optoelectronics. The study, published in the journal Nature Communications and titled "Atomic-Precision ...
Nanophysics
Aug 15, 2024
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180
Researchers at Fraunhofer IAF have made a breakthrough in the field of semiconductor materials: With aluminum yttrium nitride (AlYN), they have succeeded in fabricating and characterizing a new and promising semiconductor ...
Condensed Matter
Aug 14, 2024
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121
Future optical communication and signal processing systems will require high-volume optical links, wherein photonic integrated devices play a key role. Si photonics is currently among the most advanced techniques for realizing ...
Optics & Photonics
Aug 8, 2024
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76
Quantum technology is quantifiable in qubits, which are the most basic unit of data in quantum computers. The operation of qubits is affected by the quantum coherence time required to maintain a quantum wave state.
Quantum Physics
Aug 1, 2024
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108
U.S. Naval Research Laboratory (NRL) scientists confirm the identification of a new class of semiconductor nanocrystals with bright ground-state excitons, a significant advancement in the field of optoelectronics, in an article ...
Nanomaterials
Jul 31, 2024
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181
Putting 50 billion transistors into a microchip the size of a fingernail is a feat that requires manufacturing methods of nanometer level precision—layering of thin films, then etching, depositing, or using photolithography ...
Nanophysics
Jul 30, 2024
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122
The semiconductor industry has grown into a $500 billion global market over the last 60 years. However, it is grappling with dual challenges: a profound shortage of new chips and a surge of counterfeit chips, introducing ...
Optics & Photonics
Jul 20, 2024
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110
Successfully innovating optoelectronic semiconductor devices depends a lot on moving charges and excitons—electron-hole pairs—in specified directions for the purpose of creating fuels or electricity.
Nanophysics
Jul 18, 2024
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208
Silicon, the cornerstone of modern electronics, photovoltaics, and photonics, has traditionally been limited to surface-level nanofabrication due to the challenges posed by existing lithographic techniques. Available methods ...
Nanophysics
Jul 16, 2024
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547
An international research team led by Professor My Ali El Khakani of the Institut national de la recherche scientifique (INRS) has made a surprising discovery about the properties of molybdenum disulfide, also known as MoS2. ...
Nanophysics
Jul 11, 2024
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