In a semiconducting material,the mobilities o | vedclass

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

Question

(A) In a semiconductor,the mobility of charge carriers is defined as the drift velocity per unit electric field. Electrons are lighter and move throug

Vedclass · Accepted Answer

$\mu_e > \mu_h$

Vedclass · Answer

(A) In a semiconductor,the mobility of charge carriers is defined as the drift velocity per unit electric field. Electrons are lighter and move through the conduction band,whereas holes are essentially vacancies in the valence band that move through a process of successive electron jumps. Due to their lower effective mass and the nature of their movement in the conduction band,electrons encounter less scattering and have a higher mobility compared to holes. Therefore,the mobility of electrons is always greater than the mobility of holes,i.e.,$\mu_e > \mu_h$.

In a semiconducting material,the mobilities of electrons and holes are $\mu_e$ and $\mu_h$ respectively. Which of the following is true?

Similar Questions

The distance between the body-centered atom and a corner atom in sodium $(a = 4.225 \, \mathring{A})$ is ....... $\mathring{A}$ $[AIPMT \, 1995]$

Explain the classification of materials on the basis of resistivity.

The relation between the number of free electrons in semiconductors $(n)$ and its temperature $(T)$ is

$GaAs$ (Gallium Arsenide) is a ....... .

Which is the correct relation for the forbidden energy gap in a conductor,semiconductor,and insulator?

Vedclass Test Series

Exam Paper Generator

Online Exam Module