- #1
bobred
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Homework Statement
For silicon at T=300K with donor density ND=2×109cm−3, acceptor density NA=0 and ni=8.2×109cm−3, calculate the equilibrium electron and hole concentration
Homework Equations
[tex]n_0=\frac{N_D-N_A}{2}+\sqrt{\frac{N_D-N_A}{2}^2+n_i^2}[/tex]
[tex]p_o=\frac{n_i^2}{n_0}[/tex]
The Attempt at a Solution
I get
[tex]n_0=9.26\times10^9[/tex] and [tex]p_0=7.26\times10^9[/tex]
But whenever I enter the results into the online quiz it says it's wrong, am I missing something here?