Difference between revisions of "Semiconductor"

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A '''semiconductor''' is a material (most often an element like silicon, but sometimes a compound like galena, used in early [[diode]]s) which is intermediate in its ability to carry [[current]] between an [[insulator]] (e.g. most plastics) and a conductor (e.g. most metals).
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A '''semiconductor''' is a material (most often an element like silicon, but sometimes a compound like galena, used in early [[diode]]s) which is intermediate in its ability to carry [[current]] between an [[insulator]] (e.g. most plastics) and a [[conductor]] (e.g. most metals).
  
Semiconductors are very important to modern electronics because the addition of trace amounts of dopants (other elements) can render them into materials which have an excess of [[electron]]s (so-called 'N'-type semiconducors) or [[hole]]s (the absence of an electron, so-called 'P'-type semiconducors). Joining together blocks of P- and N-type semiconductors in the appropriate configurations can produce a wide range of devices, including diodes and [[transistor]]s.
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Semiconductors are very important to modern [[electronics]] because the addition of trace amounts of dopants (other elements) can render them into materials which have an excess of [[electron]]s (so-called 'N'-type semiconducors) or [[hole]]s (the absence of an electron, so-called 'P'-type semiconducors).
  
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Joining together blocks of P- and N-type semiconductors in the appropriate configurations can produce a wide range of devices, including diodes and [[transistor]]s. The ability to create multiple such devices on a single small block of semiconductor material allowed the creation of [[integrated circuit]]s.
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The term may also be used to refer to sub-systems constructed using semiconductor devices; e.g. at one point all [[main memory]] was [[core memory]], so the term 'semiconductor [[Random Access Memory|RAM]]' was used to indicate the use of ICs to actually hold data.
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==Further reading==
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* Michael Riordan, Lillian Hoddeson, ''Crystal Fire: The Birth of the Information Age'', Norton, New York, 1997 - a wonderful history of transistors and ICs, [https://web.archive.org/web/20120627121017/http://laimbio08.escet.urjc.es/docencia/FOTONICA/origins_p_n_junction_IEEE_spectrum_34_1997.pdf Chapter 6] contains the definitive history of the invention of the transistor
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==External links==
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* [https://ocw.mit.edu/courses/sts-340j-introduction-to-the-history-of-technology-fall-2006/a96089fb1b0343cb358c982a9bb3c072_fox_crystalfire.pdf Crystal Fire: The Birth of the Information Age - Theme: Sources] - interesting detail on the sources used for 'Crystal Fire'
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[[Category: Technology]]

Latest revision as of 23:36, 10 January 2024

A semiconductor is a material (most often an element like silicon, but sometimes a compound like galena, used in early diodes) which is intermediate in its ability to carry current between an insulator (e.g. most plastics) and a conductor (e.g. most metals).

Semiconductors are very important to modern electronics because the addition of trace amounts of dopants (other elements) can render them into materials which have an excess of electrons (so-called 'N'-type semiconducors) or holes (the absence of an electron, so-called 'P'-type semiconducors).

Joining together blocks of P- and N-type semiconductors in the appropriate configurations can produce a wide range of devices, including diodes and transistors. The ability to create multiple such devices on a single small block of semiconductor material allowed the creation of integrated circuits.

The term may also be used to refer to sub-systems constructed using semiconductor devices; e.g. at one point all main memory was core memory, so the term 'semiconductor RAM' was used to indicate the use of ICs to actually hold data.

Further reading

  • Michael Riordan, Lillian Hoddeson, Crystal Fire: The Birth of the Information Age, Norton, New York, 1997 - a wonderful history of transistors and ICs, Chapter 6 contains the definitive history of the invention of the transistor

External links