1 files changed, 18 insertions, 0 deletions
diff --git a/2258/CH2/EX2.4/2_4.sce b/2258/CH2/EX2.4/2_4.sce
new file mode 100755
index 000000000..9fecc5793
--- /dev/null
+++ b/2258/CH2/EX2.4/2_4.sce
@@ -0,0 +1,18 @@
+clc();
+clear;
+// To calculate the temperature
+//let X=E-Ef
+X=0.5;   //E-Ef=0.5 in eV
+X=X*1.6*10^-19;   //X in J
+FE=1/100;    //fermi function is 1% 
+k=1.38*10^-23;
+//FE=1/(1+exp(X/(k*T)))
+//therefore 1/FE = 1+exp(X/(k*T))
+//therefore (1/FE)-1 = exp(X/(k*T))
+//therefore log((1/FE)-1) = X/(k*T)
+//but log(x) = 2.303*log10(x)
+//therefore T = X/(k*log((1/FE)-1))
+//but log(x)=2.303*log10(x)
+//therefore T = X/(k*2.303*log10((1/FE)-1))
+T = X/(k*2.303*log10((1/FE)-1));
+printf("temperature is %f K",T);