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प्रश्न
Distinguish between 'intrinsic' and 'extrinsic' semiconductors
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उत्तर
| Intrinsic Semiconductor | Extrinsic Semiconductor |
| It is a pure semiconductor material with no impurity atoms in it. | It is prepared by doping a small quantity of impurity atoms to the pure semiconductor. |
| The number of free electrons in the conduction band and the number of holes in valence band is exactly equal. | The number of free electrons and holes is never equal. There is an excess of electrons in n-type semiconductors and an excess of holes in p-type semiconductors. |
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संबंधित प्रश्न
Semiconductors formed by doping germanium (Ge) with aluminium (Z = 13) and antimony (Z = 51) are ______.
In n-type semiconductor majority carriers and minority carriers are respectively ______.
Why are elemental dopants for Silicon or Germanium usually chosen from group XIII or group XV?
Name the extrinsic semiconductors formed when pure germanium is doped with a Pentavalent impurity. Draw the energy band diagram of extrinsic semiconductors so formed.
- Statement I: By doping silicon semiconductor with pentavalent material, the electrons density increases.
- Statement II: The n-type semiconductor has net negative charge. In the light of the above statements, choose the most appropriate answer from the options given below:
The majority charge carriers in a P-type semiconductor are ______.
What is the conductivity of intrinsic semiconductors at room temperature?
What is the semiconductor to which the dopant is added called?
Which type of dopant is antimony (Sb)?
What are the two types of extrinsic semiconductors?
