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.
Quantum dots are microscopic semiconductor crystals developed in the lab that share many properties with atoms, including the ability to absorb or emit light, a technology that Los Alamos researchers have spent nearly three ...
Nanophysics
Jun 12, 2025
0
45
In today's energy-intensive environment, designing new devices for more efficient and renewable energy sources is at the forefront of scientific research. A particularly interesting approach utilizes Ruddlesden-Popper perovskites—a ...
Nanophysics
Jun 12, 2025
0
1
Transistors are fundamental to microchips and modern electronics. Invented by Bardeen and Brattain in 1947, their development is one of the 20th century's key scientific milestones. Transistors work by controlling electric ...
Juan Casado Cordón, Professor of Physical Chemistry at the University of Malaga, considers graphene—an infinite layer of carbon atoms—as one of the greatest discoveries of the last 20 years due to its "unique properties" ...
Nanophysics
May 26, 2025
0
21
Improving energy conversion efficiency in power electronics is vital for a sustainable society, with wide-bandgap semiconductors like GaN and SiC power devices offering advantages due to their high-frequency capabilities. ...
Condensed Matter
May 23, 2025
0
56
A research team, led by Professor Junhee Lee from the Graduate School of Semiconductor Materials and Devices Engineering at UNIST, has demonstrated through quantum mechanical calculations that charged domain walls in ferroelectrics—once ...
Condensed Matter
May 22, 2025
0
42
Ferromagnetic semiconductors (FMSs) combine the unique properties of semiconductors and magnetism, making them ideal candidates for developing spintronic devices that integrate both semiconductor and magnetic functionalities. ...
Condensed Matter
May 21, 2025
0
25
Researchers have demonstrated that by using a semiconductor with flexible bonds, the material can be molded into various structures using nano containers, without altering its composition. The discovery could lead to the ...
Nanophysics
May 21, 2025
0
17
Scientists studying a promising quantum material have stumbled upon a surprise: within its crystal structure, the material naturally forms one of the world's thinnest semiconductor junctions—a building block of most modern ...
Condensed Matter
May 20, 2025
0
142
A research team has successfully produced eco-friendly solar hydrogen for the first time based on a quantum semiconductor nanocluster, which is the world's smallest inorganic semiconductor material.
Nanomaterials
May 19, 2025
0
15
