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They use electronic conduction in the solid state as opposed to the gaseous state or thermionic emission in a high vacuum. Semiconductor devices are manufactured both as single discrete devices and as integrated circuits ICs, which consist of a numberfrom a few as low as two to billionsof devices manufactured and interconnected on a single semiconductor substrate. - Current conduction in a semiconductor occurs via mobile or "free" electrons and holes, collectively known as charge carriers.
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The term semiconductor is used, slightly inaccurately, to mean electronic components such as integrated circuits chips and transistors. Strictly speaking, it refers to the materials out of which these components are made. This is most commonly silicon, although other materials including germanium, gallium arsenide and indium arsenide are used for when necessary. - The market for semiconductors is global and demand is cyclical. - There are many smaller companies involved in the design and marketing of semiconductors.
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30 September 2010 AlN substrate used to make 260 240nm UV LEDs Crystal IS reduces threading dislocations in strained active layers by growth on high-quality bulk aluminum nitride substrates. 30 September 2010 Low threshold for m-plane nitride semiconductor lasing UCSB grows m-plane violet lasers with comparable characteristics to state-of-the-art c-plane lasers. - Semiconductor Today and the editorial material contained within it and related media is the of Juno Publishing and Media Solutions Ltd.
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For information on devices using semiconductors and their history, see semiconductor device. This article is about the material. - This means a conductivity roughly in the range of 103 to 108 siemens per centimeter. Semiconductor materials are the foundation of modern electronics, including radio, computers, telephones, and many other devices. Such devices include transistor, solar cells, many kinds of diodes including the light-emitting diode, the silicon controlled rectifier, and digital and analog integrated circuits.
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Semiconductor n. Any of various solid crystalline substances, such as germanium or silicon, having electrical conductivity greater than insulators. - Any of various solid crystalline substances, such as germanium or silicon, having electrical conductivity greater than insulators but less than good conductors, and used especially as a base material for computer chips and other electronic devices. An integrated circuit or other electronic component containing a semiconductor as a base material.
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Related subjects: Electricity and Electronics A semiconductor is a solid whose electrical conductivity can be controlled over a wide range, either permanently or dynamically. - Silicon is the most commercially important semiconductor, though dozens of others are important as well. - Overview Semiconductors are very similar to insulators. The two categories of solids differ primarily in that insulators have larger band gaps energies that electrons must acquire to be free to flow.
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Semiconductor Forecast 2010-2011 Update. - Its that time of the quarter again, where the semiconductor analysts revise forecasts, passing off glorified guesstimates as valid financial planning data. They arent forecasts! They are observations! I blame these hacks for the 12 5% Silicon Valley unemployment rate. - ETF TrendsSemiconductor ETFs Hit the Refresh ButtonETF TrendsSemiconductor revenue is on the upswing, and semiconductor exchange traded funds ETFs could use the boost.
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Possible keywords: Triac (semicond. comp.), Voltage control. (semicond. comp.), Z-diode (semicond. comp.), Zener (semicond. comp.)
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