What is a depletion layer? What is the order of its thickness?
(N/A) depletion layer (or depletion region) is a region formed at the $PN$ junction where the mobile charge carriers (electrons and holes) have diffused across the junction and recombined, leaving behind immobile ionized donor and acceptor atoms.
Because this region is devoid of free charge carriers, it acts as an insulating layer that prevents further flow of current across the junction under equilibrium conditions.
The order of the thickness of the depletion layer is typically $10^{-6} \, m$ or $1 \, \mu m$.
Because this region is devoid of free charge carriers, it acts as an insulating layer that prevents further flow of current across the junction under equilibrium conditions.
The order of the thickness of the depletion layer is typically $10^{-6} \, m$ or $1 \, \mu m$.
Explore More
Similar Questions
The $I-V$ characteristics of a semiconductor diode are shown in the figure. The resistance of the diode at $V = -8 \text{ V}$ and $I_{d} = 10 \text{ mA}$ are respectively:
Medium
View SolutionWhen a $p-n$ junction diode is in forward bias,which type of charge carriers flows in the connecting wire?
When a forward bias is applied to a $p-n$ junction,it $\qquad$ .
The $V-I$ characteristic of a silicon diode is shown in the Figure. Calculate the resistance of the diode at $(a) \; I_{D} = 15 \, mA$ and $(b) \; V_{D} = -10 \, V$.
Medium
View SolutionWhen forward bias is applied to a $p-n$ junction,then what happens to the potential barrier $(V_B)$ and the width $(X)$ of the depletion region?
Vedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo