Wondering about law of mass action

  • Thread starter jinyong
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  • #1
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I am wondering why the law of mass action in semiconductors is this relation: n*p=ni^2. Any proof of this why is it not n*p=ni^3 or something....Also why doesn't dopants affect this relationship since doesn't dopants increase the overall number of carriers?
 

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  • #2
Gokul43201
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Does it even make dimensional sense to write n*p=ni^3? You need to learn how the law is derived - you will find it in any solid state electronics text.

And yes, dopant concentrations are considered in arriving at that final result.
 

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