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//Calculate Hole concentration
//Ex:15.9
clc;
clear;
close;
nd=10^17;//in per cu cm
ni=1.5*10^10;//in cu cm
ne=nd;//nd>>ni
nh=ni^2/ne;
disp(nh,"Hole concentration (in per cubic cm) = ");
t=300;//in K
e=0.0259*log(ne/ni);//in eV
disp(e,"Location of Fermi Level (in eV) = ");
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