%Mobility versus Dopant Concentration (Si,300K)



%Fit Parameters

NDref=1.3e17;  NAref=2.35e17;

unmin=92;  upmin=54.3;

un0=1268;  up0=406.9;

an=0.91;  ap=0.88;



%Mobility Calculation

N=logspace(14,19);

un=unmin+un0./(1+(N/NDref).^an);

up=upmin+up0./(1+(N/NAref).^ap);



%Plotting results

close

loglog(N,un,N,up); grid;

axis([1.0e14 1.0e19 1.0e1 1.0e4]);

xlabel('NA or ND (cm-3)');

ylabel('Mobility (cm2/V-sec)');

text(1.0e15,1500,'Electrons');

text(1.0e15,500,'Holes');

text(1.0e18,2000,'Si,300K');