What does p/τ represent?
Option (c) represents the holes per second lost by recombination per unit volume.
Which of the following is the Taylor’s expression?
Option a represents the correct formula for the Taylor’s expression.
Calculate the number of coulombs per second if the area is 4cm2, recombination rate of hole is 1000 cm-3/s and the differential length is 2mm.
number of coulombs per second= eAdxp/τ
The current entering the volume at x is I and leaving is I+Δi , the number of coulombs per second will be equal to δI. Is it true or false?
Coulombs per second is known as the current. The differential current will be the current through the semiconductor.
The change in the carrier density is due to
The change in the carrier density describes the continuity equation which is equal to the difference between the incoming and outgoing flux plus generation and minus recombination.
What of the following conditions satisfies when the number of holes which are thermally generated is equal to the holes lost by recombination?
Under the equilibrium conditions, I will be zero and then the dp/dt will aso be equal to zero in the continuity equation. Then, g= p/τ is left which is option c.
What is the diffusion length for holes when Dp=25cm2/s and τp=25s?
Which of the following represents the continuity equation?
Option a represents the correct equation of the continuity equation for holes.
What is the diffusion length for electrons when Dn=10cm2/s and τn=40s?
Which of the following represents the best definition for the diffusion length for holes?
Diffusion length for holes is represented as the average distance which a hole is injected travels before recombining with an electron. It is the distance into the semiconductor at which the injected concentration falls to 1/ϵ of its value at x=0.