How is this equation derived?

by Turion
Tags: derived, equation
Turion is offline
Sep29-13, 04:24 PM
P: 148
Equation in pink:

I was absent so I was going through the slides and I saw that equation. There isn't a derivation shown. Do you guys have any ideas?
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Turion is offline
Sep29-13, 04:57 PM
P: 148
Quote Quote by arildno View Post
What course is this?

What do the symbols mean?
This is for solid state physics.

n0 represents the number of electrons in a semiconductor. p0 represents the number of holes in a semi conductor.

NA represents the number of positive (acceptor) ions. ND represents the number of negative (donor) ions.

ni=pi=n0=p0 in an instrinsic semiconductor.

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