- #1
brad sue
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Homework Statement
Silicon is doped with 10^16 phosphorus atoms/cm^3.
At what temperature would the hole concentration be equal to 10% of the ionized impurity concentration?
2. Homework Equations
I am very confused with the equation I have .
The translation of the question is I believe p=0.1(Nd+), where p is the hole concentration.
I think I can use the equation for Nd+= Nd x e(-(Ef-Ed)/KT),
where Nd+ is the ionized donor concentration, Nd is the donor concentration, Ef the fermi level, Ed the donor energy.
The Attempt at a Solution
First I am not sure I am using gthe good equation, then I don't know how to find the Ef and Ed . i was not able to find or don't understand how to get the Ev and Ec...
Homework Equations
Please can I have some guidance at least for the equations?
Thank you
brad