diff options
Diffstat (limited to '2258/CH7/EX7.23/7_23.sce')
| -rwxr-xr-x | 2258/CH7/EX7.23/7_23.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/2258/CH7/EX7.23/7_23.sce b/2258/CH7/EX7.23/7_23.sce new file mode 100755 index 000000000..9e0ec3ba0 --- /dev/null +++ b/2258/CH7/EX7.23/7_23.sce @@ -0,0 +1,23 @@ +clc();
+clear;
+// To calculate the probability of occupation
+Eg=0.4; //energy gap in eV
+Eg=Eg*1.6*10^-19; //Eg in J
+KB=1.38*10^-23;
+T1=0; //temp 1 in C
+T1k=T1+273; //temp 1 in K
+T2=50; //temp 2 in C
+T2k=T2+273; //temp 2 in K
+T3=100; //temp 3 in C
+T3k=T3+273; //temp 3 in K
+//F(E) = 1/(1+(exp((E-Ep)/(KB*T))))
+//but E-Ep = (1/2)*Eg
+//therefore F(E) = 1/(1+(exp(Eg/(2*KB*T))))
+FE1=1/(1+(exp(Eg/(2*KB*T1k))));
+FE2=1/(1+(exp(Eg/(2*KB*T2k))));
+FE3=1/(1+(exp(Eg/(2*KB*T3k))));
+printf("probability of occupation at 0 C is %f eV",FE1);
+printf("probability of occupation at 50 C is %f eV",FE2);
+printf("probability of occupation at 100 C is %f eV",FE3);
+
+//answers given in the book are wrong
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