1 files changed, 26 insertions, 0 deletions
diff --git a/3665/CH8/EX8.12/Ex8_12.sce b/3665/CH8/EX8.12/Ex8_12.sce
new file mode 100644
index 000000000..fd54d12ec
--- /dev/null
+++ b/3665/CH8/EX8.12/Ex8_12.sce
@@ -0,0 +1,26 @@
+clc//
+//
+//
+
+//Variable declaration
+ni=1.5*10^16;     //carrier density(per m^3)
+mew_e=0.13;     //electron mobility(m^2/Vs)
+mew_h=0.05;     //hole mobility(m^2/Vs)
+e=1.6*10^-19;   
+d=2.33*10^3;    //density(kg/m^3)
+n=28.1;
+na=6.02*10^26;     //number of atoms
+
+//Calculation
+sigma=ni*e*(mew_e+mew_h);     //conductivity(ohm-1 m-1)
+Nd=d*na/(n*10^8);
+p=ni^2/Nd;    
+sigma_ex1=Nd*e*mew_e;     //conductivity(ohm-1 m-1)
+n=p;
+Na=Nd;
+sigma_ex2=Na*e*mew_h;     //conductivity(ohm-1 m-1)
+
+//Result
+printf("\n conductivity is %0.3f *10^-3 ohm-1 m-1",sigma*10^3)
+printf("\n conductivity is %0.2f ohm-1 m-1",sigma_ex1)
+printf("\n conductivity is %0.2f ohm-1 m-1",sigma_ex2)