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iwas thinking if there exist a general one for the intrinsic material and from it we can get this 2 equations.

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- Thread starter moe_3_moe
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- #1

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iwas thinking if there exist a general one for the intrinsic material and from it we can get this 2 equations.

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- #3

Gokul43201

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Write down one of the two equations that you have, and someone can show you how that comes from the general equation.

As for the general equation itself, you can simply look up the Hall Effect, and you will find it.

Edit: Crossposted with anto again!!

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n-type: Rh=-1/qn0 q=charge(negative) n0=electron concentration

i was thinking about a general formula for intrinsic and from it we can get this 2 equations...it is Rh=1/q(p0-n0)

it may be wrong but it looks so logic...but i feel like it should contain ni ???

- #5

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Sure, you can get a more "general" formula for the Hall coefficient if instead of q (the electron charge) you put the charge of the specific carrier, and instead of n or p you put the concentration of the specific carrier. But there is no need for such a generalization since it interests us if the Hall coefficient is positive or negative because it tells us what is the type of carriers (electron or hole) that make the current in the material whose Hall coefficient we know. See the link I gave you.

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Dr Transport

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You are confused about the meaning of intrinsic. There are always n and p carriers in a semiconductor, intrinsic means that the concentrations are equal. You cannot just add the carrier densities because the mobilities are not equal, you need to take the sum of the n and p contributions.

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- #9

Dr Transport

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Yes, you have to account for all the physics.

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