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orangeincup
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Homework Statement
A sample of germaium has an acceptor concentration of Na=10^17 and a donor concentration of Nd=0. Calculate the intrinsic carrier concentration, majority carrier concentration, and Ef-Efi. Use T=400
Homework Equations
No*Np=ni^2
Nv=Nv*(T/300)^3/2
Nc=Nc*(T/300)^3/2
ni^2=Nv*Nc exp(Ns)
The Attempt at a Solution
1.04*10^19 * (400/300)^3/2 = 1.23*10^19 =Nv
6*10^18 * (400/300)^3/2=7.11*10^18 = Ncni=((((1.04*10^19*6*10^18)^2exp(-.66/(2*400*8.6*10^-6)))^1/2
ni=9.21*10^16
10^17/2+sqrt((10^17/2)^2+(9.21*10^16)^2)=1.55*10^17
Does this look correct? I feel like the ni value is wrong
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