The concentration of electrons in an intrinsi | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) For an intrinsic semiconductor, the law of mass action states that $n_i^2 = n_e n_h$, where $n_i$ is the intrinsic carrier concentration, $n_e$ is

Vedclass · Accepted Answer

$9 	imes 10^8 \,m^{-3}$

Vedclass · Answer

(C) For an intrinsic semiconductor, the law of mass action states that $n_i^2 = n_e n_h$, where $n_i$ is the intrinsic carrier concentration, $n_e$ is the electron concentration, and $n_h$ is the hole concentration.Given $n_i = 6 	imes 10^{15} \,m^{-3}$ and the doped electron concentration $n_e = 4 	imes 10^{22} \,m^{-3}$.Substituting these values into the formula:$(6 	imes 10^{15})^2 = (4 	imes 10^{22}) 	imes n_h$$36 	imes 10^{30} = 4 	imes 10^{22} 	imes n_h$$n_h = \frac{36 	imes 10^{30}}{4 	imes 10^{22}}$$n_h = 9 	imes 10^8 \,m^{-3}$.

The concentration of electrons in an intrinsic semiconductor is $6 \times 10^{15} \,m^{-3}$. On doping with an impurity, the electron concentration increases to $4 \times 10^{22} \,m^{-3}$. In thermal equilibrium, the concentration of the holes in the doped semiconductor is:

Similar Questions

$N-$ type semiconductors are obtained when germanium is doped with:

The electronic configuration of germanium is $2, 8, 18, 4$. To make it an extrinsic semiconductor,a small quantity of antimony is added. What is the nature of the resulting material?

In an intrinsic semiconductor at room temperature,the number of electrons and holes are

Which of the following dopant is $NOT$ used in $Ge$ to obtain $n$-type semiconductor?

$A$ $P$-type semiconductor is .......

Vedclass Test Series

Exam Paper Generator

Online Exam Module