//Section-12,Example-4,Page no.-SS.59
//To calculate concentration of holes and electrons in an n-type silicon.
clc;
C_n=0.1                            //(ohm-cm)^-1
e=1.6*10^-19                          //Coulombs
u_e=1300                              //cm^2/Vsec
N_D=C_n/(e*u_e)                            //atoms/cm^3
n=N_D                                    //electrons/cm^3
n_i=1.5*10^10                                 //per cm^3
disp(n,'Concentration of electrons(per cm^3)')
p=((n_i)^2)/n
disp(p,'Concentration of holes(per cm^3)')