Find the number density of impurity atoms that must be added to a pure – InterviewSolution

InterviewSolution

1.	Find the number density of impurity atoms that must be added to a pure silicon crystal inorder to convert it to have resistivity (i) `10^(-1)Omegam` n-type silicon (ii) `10^(-1)Omegam` p-type silicon. Give for silicon: `mu_(e)=0.135m^(2)V^(-1)s^(-1)` and `mu_(h)=0.048m^(2)V^(-1)s^(-1)`.
Answer» (i) `1/rho=en_(e)mu_(e) or n_(e)=(1)/(rho emu_(e)) (ii) n_(h)=(1)/(rho emu_(h))`

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