The demand to shrink the size of semiconductors coupled with the problem of the heat generated at the hot spots of the devices not being effectively dispersed has negatively affected the reliability and durability of modern ...
Nanophysics
Jun 1, 2023
0
7
A team led by Prof. Guo Guangcan from the University of Science and Technology of China (USTC) has made significant progress in the research of multilevel quantum system tunability.
Quantum Physics
May 31, 2023
0
17
In March 2022, Microsoft published research results about the realization of a special type of particle that might be used to make particularly robust quantum bits. Researchers at the University of Basel are now calling these ...
Quantum Physics
May 26, 2023
1
276
Researchers from the RIKEN Center for Emergent Matter Science and collaborators have succeeded in creating a "superlattice" of semiconductor quantum dots that can behave like a metal, potentially imparting exciting new properties ...
Condensed Matter
May 26, 2023
0
70
Things do not always go as one wants in reality. This is especially true in the world of light. However, a research team at POSTECH has successfully controlled "trions," a breakthrough toward developing what could ultimately ...
Nanophysics
May 15, 2023
0
43
Water oxidation reaction involves a four-electron and four-proton transfer process, which requires an uphill energy transformation and limits the efficiency of the overall photocatalytic water splitting reaction.
Analytical Chemistry
May 5, 2023
0
4
Physicists at the Australian National University (ANU) are using nanoparticles to develop new sources of light that will allow us to "peel back the curtain" into the world of extremely small objects—thousands of times smaller ...
Nanophysics
Apr 26, 2023
0
30
Scientists from Tokyo Metropolitan University have successfully engineered multi-layered nanostructures of transition metal dichalcogenides that meet in-plane to form junctions. They grew out layers of multi-layered structures ...
Nanomaterials
Apr 24, 2023
0
13
Moiré patterns occur everywhere. They are created by layering two similar but not identical geometric designs. A common example is the pattern that sometimes emerges when viewing a chain-link fence through a second chain-link ...
Nanophysics
Apr 20, 2023
0
73
Hydrogen produced from renewable energy sources can be used as fuels that do not contribute to CO2 emissions, and therefore is emerging as an important future power source.
Analytical Chemistry
Apr 17, 2023
0
77
A semiconductor is a material that has a resistivity value between that of a conductor and an insulator. The conductivity of a semiconductor material can be varied under an external electrical field. Devices made from semiconductor materials are the foundation of modern electronics, including radio, computers, telephones, and many other devices. Semiconductor devices include the transistor, solar cells, many kinds of diodes including the light-emitting diode, the silicon controlled rectifier, and digital and analog integrated circuits. Solar photovoltaic panels are large semiconductor devices that directly convert light energy into electrical energy. In a metallic conductor, current is carried by the flow of electrons. In semiconductors, current can be carried either by the flow of electrons or by the flow of positively-charged "holes" in the electron structure of the material.
Silicon is used to create most semiconductors commercially. Dozens of other materials are used, including germanium, gallium arsenide, and silicon carbide. A pure semiconductor is often called an “intrinsic” semiconductor. The conductivity, or ability to conduct, of semiconductor material can be drastically changed by adding other elements, called “impurities” to the melted intrinsic material and then allowing the melt to solidify into a new and different crystal. This process is called "doping".
This text uses material from Wikipedia, licensed under CC BY-SA
