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semiconductor    音标拼音: [s,ɛmikənd'ʌktɚ] [s,ɛmɪkənd'ʌktɚ] [s,ɛmɑɪkənd'ʌktɚ]
n. 半导体

半导体

semiconductor
浮动栅金属氧化物半导体 FGMOS


semiconductor
金属-氮化物-氧化物-半导体 MNOS


semiconductor
金氧半导体;金属氧化物半导体 MOS


semiconductor
金属-铝-半导体 MAS


semiconductor
金属-绝缘体-半导体 MIS


semiconductor
半导体 SC

semiconductor
半导体

semiconductor
n 1: a substance as germanium or silicon whose electrical
conductivity is intermediate between that of a metal and an
insulator; its conductivity increases with temperature and
in the presence of impurities [synonym: {semiconductor},
{semiconducting material}]
2: a conductor made with semiconducting material [synonym:
{semiconductor device}, {semiconductor unit},
{semiconductor}]

A material, typically crystaline, which allows
{current} to flow under certain circumstances. Common
semiconductors are silicon, germanium, gallium arsenide.
Semiconductors are used to make {diodes}, {transistors} and
other basic "solid state" electronic components.

As crystals of these materials are grown, they are "doped"
with traces of other elements called {donors} or {acceptors}
to make regions which are n- or p-type respectively for the
{electron model} or p- or n-type under the {hole model}.
Where n and p type regions adjoin, a junction is formed which
will pass {current} in one direction (from p to n) but not the
other, giving a {diode}.

One {model} of semiconductor behaviour describes the doping
elements as having either {free electrons} or {holes} dangling
at the points in the crystal lattice where the doping elements
replace one of the atoms of the foundation material. When
external electrons are applied to n-type material (which
already has free electrons present) the repulsive force of
like charges causes the free electrons to migrate toward the
junction, where they are attracted to the holes in the p-type
material. Thus the junction conducts current.

In contrast, when external electrons are applied to p-type
material, the attraction of unlike charges causes the holes to
migrate away from the junction and toward the source of
external electrons. The junction thus becomes "depleted" of
its charge carriers and is non-conducting.

(1995-10-04)


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  • Semiconductor - Wikipedia
    A semiconductor is a material with electrical conductivity between that of a conductor and an insulator [1] Its conductivity can be modified by adding impurities (" doping ") to its crystal structure
  • What is a semiconductor? An electrical engineer explains how these . . .
    What is a semiconductor? An electrical engineer explains how these critical electronic components work and how they are made This schematic of a semiconductor chip shows many different
  • Semiconductor | Definition, Examples, Types, Uses, Materials, Devices . . .
    semiconductor, any of a class of crystalline solids intermediate in electrical conductivity between a conductor and an insulator Semiconductors are employed in the manufacture of various kinds of electronic devices, including diodes, transistors, and integrated circuits
  • What is a semiconductor, and what is it used for? - TechTarget
    A semiconductor is a substance that can act as a conductor or insulator depending on other factors, enabling it to serve as a foundation for computers and other electronic devices The term semiconductor is now widely associated with integrated circuits
  • Semiconductors - GeeksforGeeks
    Semiconductors are the materials which have energy gap between conductors and insulators In this materials electrons can be moved from valence band to conduction band by applying some amount of energy But they don't conduct at normal conditions some energy equal to band gap between valence and conduction band need to be supplied for conductivity
  • How Semiconductors Work - HowStuffWorks
    A diode is the simplest possible semiconductor device, and is therefore an excellent beginning point if you want to understand how semiconductors work In this article, you'll learn what a semiconductor is, how doping works and how a diode can be created using semiconductors
  • What Is a Semiconductor and How Is It Used? - Investopedia
    A semiconductor is an electrical component in consumer and industrial products Read how they work and how to invest in the semiconductor industry
  • Semiconductor: Definition, Types, Examples, and Applications
    What is a semiconductor What is it used for Learn its types with examples and a diagram Also, learn about electron and hole mobilities in a semiconductor
  • What Are Semiconductors, and What Are They Made Of?
    In this article, we explain what semiconductors are; how they work, with an eye to N-type vs P-type semiconductors; what semiconductors are made of and how they're built; and where they are found
  • What Is a Semiconductor? How Does It Work? | Built In
    A semiconductor is a material that controls electrical currents, making it an essential component of most modern electronics They are the computing chips and microcontrollers that power smartphones, computers and televisions





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