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2015-02-02T15:14:36+05:30

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Adding of impurities to semiconductor is doping.

Materials which are used in semiconductor devices are generally of silicon , germanium etc .

The impurities belong  to either boron family members like gallium , indium to make p- type semiconductors and to make n-type semiconductors  we use
nitrogen famiily members to make n-type semiconductors  like phosphorus ,
arsenic etc

Doping is done because addition of small qty of them causes dramatic changes in the electrical properties.


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2015-02-02T15:38:47+05:30

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By adding suitable impurities, the electrical conductivity can be increased.
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