1 files changed, 24 insertions, 0 deletions
diff --git a/3665/CH8/EX8.13/Ex8_13.sce b/3665/CH8/EX8.13/Ex8_13.sce
new file mode 100644
index 000000000..2d8a8bb8d
--- /dev/null
+++ b/3665/CH8/EX8.13/Ex8_13.sce
@@ -0,0 +1,24 @@
+clc//
+//
+//
+
+//Variable declaration
+ni=1.5*10^16;     //carrier density(per m^3)
+mew_e=0.135;     //electron mobility(m^2/Vs)
+mew_h=0.048;     //hole mobility(m^2/Vs)
+e=1.6*10^-19;  
+Nd=10^23;      
+T=300;    //temperature(K)
+k=1.38*10^-23;
+
+//Calculation
+sigma=ni*e*(mew_e+mew_h);     //conductivity(ohm-1 m-1)
+p=ni^2/Nd;     //hole concentration(per m^3)
+sigma_ex=Nd*e*mew_e;      //conductivity(ohm-1 m-1)
+x=3*k*T*log(mew_e/mew_h)/4;
+
+//Result
+printf("\n conductivity is %0.3f *10^-3 ohm-1 m-1",sigma*10^3)
+printf("\n hole concentration is %0.3f per m^3",p)
+printf("\n conductivity is %0.3f *10^3 ohm-1 m-1",sigma_ex/10^3)
+printf("\n position of fermi level is %0.2f eV",x/(1.6*10^-19))