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Q: What is the purpose of the impurities in the semi conductor?
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What is extrinsic conductor?

Impure semi conductor material are called extrinsic semi conductor as there a small quantity of foreign particle is present. Two types of impurities are added to an extrinsic semi conductor. When impurities belonging to third group are called as trivalent or acceptor impurities such as boron, aluminum, indium or gallium when these impurities are added in pure semi conductors they form p-type semi conductor. And similarly when impurities belonging to group fifth called as penta valent or donor impurities such as arsenic, antimony, bismuth or phosphorus are added to a semi conductor they form N-type semi conductor .


What is the process of adding impurities to a semi conductor?

It's know as 'doping'.


What is doping process?

It is the addition of impurities to a semi-conductor in order improve their electrical conductivity.


IS WATER IS A GOOD CONDUCTOR?

Distilled water is a bad conductor. Dirty water, or water with impurities added, is a good conductor. It is not the water that matters, but the impurities.


Is water a good a conductor?

Distilled water is a bad conductor. Dirty water, or water with impurities added, is a good conductor. It is not the water that matters, but the impurities.


Is sodium a semi conductor?

No, sodium (Na) is a conductor not a semi conductor


How can you increase the conductivity of a semi conductor?

The conductivity of a semi-conductor can be increased by raising the temperature of the semi-conductor .


Is plain water a conductor or insulator?

Plain distilled (or double distilled) water with no impurities is a poor conductor of electricity. The more impurities it has the better conductor it becomes


Is copper a conductor insulator or semi conductor?

Copper is a conductor.


Is a cotton shirt a insulator or conductor?

semi conductor


Which one is used in the laser printing wheather dye laser or semi conductor laser?

semi-conductor


Is silver and gold such as jewelry, are they great semi conductor?

Yes, silver and gold are good semi conductor.