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clc//
//
//
//Variable declaration
e=1.6*10^-19;
mew_e=0.36; //electron mobility(m^2/Vs)
mew_h=0.17; //hole mobility(m^2/Vs)
rho=2.12; //resistivity(ohm m)
T=300; //temperature(K)
k=1.38*10^-23; //boltzmann constant
m=9.109*10^-31; //mass(kg)
h=6.626*10^-34; //plancks constant
//Calculation
sigma=1/rho;
ni=sigma/(e*(mew_e+mew_h));
C=2*((2*%pi*m*k/h^2)^(3/2));
y=C*T^(3/2)/ni;
z=log(y);
Eg=2*k*T*z/(1.6*10^-19); //forbidden energy gap(eV)
//Result
printf("\n forbidden energy gap is %0.3f eV",Eg)
printf("\n answer varies due to rounding off errors")
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