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clc;clear;
//Example 18.2
//calculation of probability
//given values
T=300;//temp in K
kT=.026;//temperture equivalent at room temp in eV
Eg=5.6;//forbidden gap in eV
//calculation
f=1/(1+%e^(Eg/(2*kT)));
disp(f,'probability of an e being thermally promoted to conduction band is');
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