diff options
Diffstat (limited to '1985/CH14/EX14.4/Chapter14_example4.sce')
| -rwxr-xr-x | 1985/CH14/EX14.4/Chapter14_example4.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/1985/CH14/EX14.4/Chapter14_example4.sce b/1985/CH14/EX14.4/Chapter14_example4.sce new file mode 100755 index 000000000..d9e45bf02 --- /dev/null +++ b/1985/CH14/EX14.4/Chapter14_example4.sce @@ -0,0 +1,19 @@ +clc
+clear
+//Input data
+r=1.54*10^-8//Resistivity in ohm.m
+Ef=5.5//Fermi energy in eV
+n=5.8*10^28//Concentration of electrons in m^-3
+E=100//Electric field applied n V/m
+e=1.6*10^-19//Electron charge in Columbs
+m=9.1*10^-31//Mass of electron in kg
+
+//Calculations
+t=(m/(r*n*e^2))/10^-14//Relaxation time in s*10^-14
+u=((e*t*10^-14)/m)/10^-3//Mobility of the electron in m^2.V^-1.s^-1*10^-3
+v=(e*t*10^-14*E)/m//Drift velocity in m/s
+vf=(sqrt((2*Ef*e)/m))/10^6//Fermi velocity in m/s*10^6
+l=(vf*10^6*t*10^-14)/10^-8//Mean free path in m*10^-8
+
+//Output
+printf('The relaxation time of electrons is %3.2f*10^-14 s \n The mobility of the electrons is %3.2f*10^-3 m^2.V^-1.s^-1 \n The drift velocity of electrons is %3.3f m/s \n The fermi velocity of electrons is %3.2f*10^6 m/s \n The mean free path is %3.2f*10^-8 m',t,u,v,vf,l)
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