PN junction depletion width

Status
Not open for further replies.
K

kenambo

Full Member level 6
Joined
Feb 26, 2012
Messages
393
Helped
52
Reputation
104
Reaction score
48
Trophy points
1,308
Location
India
Visit site
Activity points
3,859
Hi all

what will happen my forward applied bias voltage reaches or exceeds the built-in potential..

Is it possible to entirely vanish the depletion region in a diode?

according to equation barrier voltage = q(Vbi-Vapplied)

if vbi=Vapplied barrier = 0V

am i right?
 

Yes, once you inject forward current there is no depletion
anymore. There are carriers moving through where it used
to be.
 


Vbi = Vt*ln(Na*Nd/ni²)=
= Built-in Potential Barrier .... Vbi≠0
Va = Applied forward bias voltage
 

So the immobile charge carriers of p-side and n-side got their respective holes and electrons when we apply a sufficient forward voltage.

is it correct?
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…