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From: simo.kaltiainen on 16 May 2006 05:17
Pooh Bear kirjoitti:
> Please explain how any material has extra ( or lacks ) any electrons !

I should use "quotation" marks :-) or something like that. It's true
that in this case the material hasn't extra electrons to get rid of (or
lack, for getting them), but there are "extra" electrons to transport
the charge in the material, and in the p-type, there is "lack of them",
meaning those "holes" to transport charge (electron gets to a hole).

But, there is actually such thing as material having extra, or lack of,
electrons (meaning that the atom is out of octet, and it "wants" to get
electrons, or get rid of them, to get the octet), but then it would be
a case of chemistry (off-topic).

> N actually stands for 'n material', p for 'p material'.

Yes, but the P and N, in the material types, stand for the positive and
negative

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