Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

built in potential energy in PN junction is negative?

Status
Not open for further replies.
A

acewong7

Newbie level 1
Newbie level 1
Joined
Mar 5, 2013
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,287
according to the equation to calculate the built-in potential energy:
Vbi = Vt ln(Na*Nd/ni²)
If Na=Nd=5*10^15, but at a high temperature ni is 1.1*10^18, we can find out that Vbi is actually negative. Does this make any sense? WHY? And I have question about the following photo, 照片 (1).JPG
Thanks
 

Hello.

Welcome to edaboard.com

If you keep increasing your forward bias voltage then depletion region become very thin that no electric field will be there any more so no resistance. I am obviously not an expert but I can try to help you because in this semester, I have semiconductor physics course.

Regards,
Princess
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top