Advertisements
Advertisements
प्रश्न
Distinguish between intrinsic and extrinsic semiconductors.
उत्तर
| Sr. No. | Intrinsic Semiconductor | Extrinsic Semiconductor |
| 1. | These are pure semiconducting tetravalent crystals. | These are semiconducting tetravalent crystals doped with impurity atoms group III (or) V. |
| 2. | Their electrical conductivity is low. | Their electrical conductivity is high. |
| 3. | There is no permitted energy state between valence and conduction band. | There is no permitted energy state of the impurity atom between valence and conduction band. |
| 4. | Their electrical conductivity depends on temperature. | Their electrical conductivity depends on temperature as well as dopant concentration. |
APPEARS IN
संबंधित प्रश्न
Doping a semiconductor result in
Why is temperature co-efficient of resistance negative for semiconductor?
What do you mean by doping?
Why can’t we interchange the emitter and collector even though they are made up of the same type of semiconductor material?
Elucidate the formation of n-type extrinsic semiconductors.
On doping an intrinsic semiconductor with a group V element, free electrons in the conduction band are the majority charge carriers and the resulting semiconductor has a net
The electron concentration in an n-type semiconductor is the same as the hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
The electron concentration in an n-type semiconductor is the same as the hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
The electron concentration in an n-type semiconductor is the same as the hole concentration in a p-type semiconductor. An external field (electric) is applied across each of them. Compare the currents in them.
