#semiconductors
A semiconductor material has an electrical conductivity value falling between that of a conductor, such as metallic copper, and an insulator, such as glass. Its resistance decreases as its temperature increases, which is behaviour opposite to that of a metal. Its conducting properties may be altered in useful ways by the deliberate, controlled introduction of impurities ("doping") into the crystal structure. Where two differently-doped regions exist in the same crystal, a semiconductor junction is created. The behavior of charge carriers which include electrons, ions and electron holes at these junctions is the basis of diodes, transistors and all modern electronics. Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called "metalloid staircase" on the periodic table. After silicon, gallium arsenide is the second most common semiconductor and is used in laser diodes, solar cells, microwave-frequency integrated circuits and others. Silicon is a critical element for fabricating most electronic circuits.
Semiconductor devices can display a range of useful properties such as passing current more easily in one direction than the other, showing variable resistance, and sensitivity to light or heat. Because the electrical properties of a semiconductor material can be modified by doping, or by the application of electrical fields or light, devices made from semiconductors can be used for amplification, switching, and energy conversion.
The conductivity of silicon is increased by adding a small amount (of the order of 1 in 108) of pentavalent (antimony, phosphorus, or arsenic) or trivalent (boron, gallium, indium) atoms. This process is known as doping and resulting semiconductors are known as doped or extrinsic semiconductors. Apart from doping, the conductivity of a semiconductor can equally be improved by increasing its temperature. This is contrary to the behaviour of a metal in which conductivity decreases with increase in temperature.
The modern understanding of the properties of a semiconductor relies on quantum physics to explain the movement of charge carriers in a crystal lattice. Doping greatly increases the number of charge carriers within the crystal. When a doped semiconductor contains mostly free holes it is called "p-type", and when it contains mostly free electrons it is known as "n-type". The semiconductor materials used in electronic devices are doped under precise conditions to control the concentration and regions of p- and n-type dopants. A single semiconductor crystal can have many p- and n-type regions; the p–n junctions between these regions are responsible for the useful electronic behavior.
Some of the properties of semiconductor materials were observed throughout the mid 19th and first decades of the 20th century. The first practical application of semiconductors in electronics was the 1904 development of the cat's-whisker detector, a primitive semiconductor diode used in early radio receivers. Developments in quantum physics in turn allowed the development of the transistor in 1947, the integrated circuit in 1958, and the MOSFET (metal–oxide–semiconductor field-effect transistor) in 1959.

List of Pinterest Semiconductors images & Semiconductors pictures

List of all Pinterest Semiconductors images and pictures. Browse Pinterest Semiconductors ideas

Fast Free ship  2pcs/lot TEC1- 12730 16V30A 62*62mm semiconductor Thermoelectric Cooler Peltier
Fast Free ship 2pcs/lot TEC1- 12730 16V30A 62*62mm semiconductor Thermoelectric Cooler Peltier
808nm Semiconductor Laser-Haarentfernungsgerät
808nm Semiconductor Laser-Haarentfernungsgerät
Semiconductor CEOs on Computing's Big Role in Slowing the Advance of Climate Change
Semiconductor CEOs on Computing's Big Role in Slowing the Advance of Climate Change
The end of Moore’s Law will drive a renaissance in chip innovation, CEOs say. But the semiconductor industry must face the existential question of power consumption driving climate change. #semiconductors #climatechange #mooreslaw
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Neamen Introduction To Semiconductor Devices Solution Manual download pdf
Neamen Introduction To Semiconductor Devices Solution Manual download pdf
Neamen Introduction To Semiconductor Devices Solution Manual pdf download online full
RARE Vintage National Semiconductor Red LCD Italian Mesh Band Women's Watch
RARE Vintage National Semiconductor Red LCD Italian Mesh Band Women's Watch
Kingston Among Top 10 Semiconductor Chip Buyers in the World
Kingston Among Top 10 Semiconductor Chip Buyers in the World
Kingston Among Top 10 Semiconductor Chip Buyers in the World
Neamen Semiconductor Devices Solution Manual download pdf
Neamen Semiconductor Devices Solution Manual download pdf
Neamen Semiconductor Devices Solution Manual pdf download online full
Big data leads to discovery of nontoxic perovskite semiconductor for solar cells
Big data leads to discovery of nontoxic perovskite semiconductor for solar cells
Diluted Magnetic Semiconductors
Diluted Magnetic Semiconductors
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Kingston Technology Among Top 10 Semiconductor Chip Buyers in the World
Kingston Technology Among Top 10 Semiconductor Chip Buyers in the World
Kingston Technology Among Top 10 Semiconductor Chip Buyers in the World
Samsung-Backed Researchers Debut Ternary Semiconductor Design
Samsung-Backed Researchers Debut Ternary Semiconductor Design
Experiments Demonstrate Seoul Semiconductor SunLike Series Natural Spectrum LEDs Enhance Crop Yields, Antioxidant Content
Experiments Demonstrate Seoul Semiconductor SunLike Series Natural Spectrum LEDs Enhance Crop Yields, Antioxidant Content
Experiments Demonstrate Seoul Semiconductor SunLike Series Natural Spectrum LEDs Enhance Crop Yields, Antioxidant Content
Sze Semiconductor 3 Edition Solutions Manual pdf download
Sze Semiconductor 3 Edition Solutions Manual pdf download
Sze Semiconductor 3 Edition Solutions Manual pdf download online full
Image copyright                  Getty Images               A trade spat between Japan and South Korea threatens to spill beyond their borders, posing potential risks to consumer electronics supplies around the world.  The row stems from export restrictions Tokyo imposed on...
Image copyright Getty Images A trade spat between Japan and South Korea threatens to spill beyond their borders, posing potential risks to consumer electronics supplies around the world. The row stems from export restrictions Tokyo imposed on...
(Sponsored)(eBay) Bussmann 350FM 690Vac 350Amps (350A) T Type Semiconductor Fuse BS88.
(Sponsored)(eBay) Bussmann 350FM 690Vac 350Amps (350A) T Type Semiconductor Fuse BS88.
Korean-American employee claims Intel discriminates in favor of Indian workers
Korean-American employee claims Intel discriminates in favor of Indian workers
A #Korean-#American #software #engineer at Intel Corp. based in #Santa #Clara has filed a #lawsuit alleging the #semiconductor #giant #favors hiring people of #Indian origin, promotes #employees of #Indian #origin even if they have no #management experience, and Indian-origin #employees get #extra #vacation time and #leave compared to others. #indicanews #IntelCorp.
Accuphase E-270 Integrated Amplifier used 2016 JAPAN
Accuphase E-270 Integrated Amplifier used 2016 JAPAN
Click to Zoom Circuit
Click to Zoom Circuit
ON Semiconductor, MBRS140T3G, schottky rectifier diode
ON Semiconductor, MBRS140T3G, schottky rectifier diode
The MBRS140T3G is a schottky power rectifier employs the use of the schottky barrier principle in a large area metal−to−silicon power diode. Available in a DO-214AA package.
Vishay, 10MQ100NTRPBF, Low forward voltage drop, surface mountable
Vishay, 10MQ100NTRPBF, Low forward voltage drop, surface mountable
The 10MQ100NTRPBF is a Schottky rectifier, designed for applications requiring low forward drop and very small foot prints on PC boards. Available in DO-214AC
Robert Miller& Future Electronics, Congratulate 30 anniversary of their employs
Robert Miller& Future Electronics, Congratulate 30 anniversary of their employs
Future Electronics is a global leading distributor of electronic components with corporate headquarters in Montreal, Canada.