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.
Light-emitting diodes (LEDs) have revolutionized modern lighting and sensing technology. From applications in our homes to industry, LEDs are used for all lighting applications, from indoor lighting over TV screens to biomedicine. ...
Optics & Photonics
Jan 9, 2024
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Substitutional doping from foreign elements stands out as a preferred method for precisely tailoring the electronic band structure, conduction type, and carrier concentration of pristine materials. In the realm of three-dimensional ...
Condensed Matter
Jan 8, 2024
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In a comprehensive review, researchers from Soochow University, Beijing Graphene Institute and Xiamen Silan Advanced Compound Semiconductor Co., Ltd. have collaborated to provide a systematic overview of the progress and ...
Nanomaterials
Dec 29, 2023
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Researchers from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences have designed Slater-Pauling (S-P) Heusler materials with a unique structure resembling a Rubik's cube. These materials exhibit ...
Condensed Matter
Dec 21, 2023
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Researchers at Osaka Metropolitan University are proving that diamonds are so much more than just a girl's best friend. Their groundbreaking research focuses on gallium nitride (GaN) transistors, which are high-power, high-frequency ...
Nanomaterials
Dec 21, 2023
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The properties that make materials like semiconductors so sought after result from the way their atoms are connected, and insight into these atomic configurations can help scientists design new materials or use existing materials ...
Nanophysics
Dec 4, 2023
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Optoelectronics detect or emit light and are used in a variety of devices in many different industries. These devices have historically relied on thin transistors, which are small semiconductors that control the movement ...
Nanophysics
Nov 29, 2023
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Skoltech scientists have found a way to improve the most widely used technology for producing single-walled carbon nanotube films—a promising material for solar cells, LEDs, flexible and transparent electronics, smart textiles, ...
Nanomaterials
Nov 28, 2023
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158
Molybdenum disulfide (MoS2) is a highly versatile material that can function, for example, as a gas sensor or as a photocatalyst in green hydrogen production. Although the understanding of a material usually starts from investigating ...
Nanomaterials
Nov 1, 2023
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New research from Flinders University and UNSW Sydney, published in the ACS Nano journal, explores switchable polarization in a new class of silicon compatible metal oxides and paves the way for the development of advanced ...
Nanophysics
Oct 16, 2023
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