Home
Class 12
PHYSICS
The densities of electrons and holes in ...

The densities of electrons and holes in an extrinsic semiconductor are `7.5xx10^(13)cm^(-3)` and `4.5 xx 10^(12)cm^(-3)` respectively. The mibilities of electrons and holes are `23xx10^(3)cm^(2)//V-s` and `10^(2)cm^(2)//V-s` respectively. What is the type of semiconductor? Find the resistivity of this semiconductor.

Promotional Banner

Similar Questions

Explore conceptually related problems

The number densities of electrons and holes in an extrinsic semiconductor are 8 xx 10^13 cm^-3 and 5 xx 10^12cm^-3 respectively and their respective mobilities are : 23 xx 10^3cm^2//Vs and 10^2cm^2//Vs . The conductivity of the semiconductor is

In a semiconductor the concentrations of electrons and holes are 8xx10^(18)//m^(3) and 5xx10^(18)//m^(3) respectively. If the mobilities of electrons and hole are 2.3m^(2)/"volt-sec" and 0.01m^(2)//"volt-sec" respectively, then semiconductor is-

In semiconductor the concentrations of electron and holes are 8xx10^(18)//m^(3) and 5xx10^(18)//m respectively. If the mobilities of electrons and hole are 2.3 m^(2)// volt-sec and 0.01m^(2)// volt-sec respectively, then semicondutor is

Mobilities of electrons and holes in a sample of a semiconductor is 25000 cm^(2) V^(-1) s^(-1) and 200 cm^(2) Vs respectively if the electron and hole concentration are 9 xx10^(13) per cm^(3) and 4xx10^(12) per cm^(3) respectively calculate the conductivity of the sample

The number densities of electrons and holes in pure silicon are 1.5 xx 10^16m^-3 . On doping with indium, the hole density becomes 4.5 xx 10^22 m^-3 , the electron density is

In a sample of semi conductor mobilities of electrons and holes are 24 xx 10^3 cm^2 V^-1 S^-1 and 0.2 xx 10^3 cm^2 V^-1 S^-1 respectively. If the density of electrons is 0.8 xx 10^14 cm^-3 and that of holes is 0.4 xx 10^14 cm^-3. Find the nature of semi-conductor and its conductivity.

A semiconductor is known to have an electron concentric of 8xx10^(13)//cm^(3) and hole concentration of 5xx10^(12)//cm^(3) . The semiconductor is

A semiconductor is known to have an electron concentration of 5 xx 10^(13)//cm^(3) and hole concentration of 8 xx 10^(12)//cm^(3) . The semiconductor is