1 files changed, 10 insertions, 0 deletions
diff --git a/377/CH4/EX4.6/4_6.sce b/377/CH4/EX4.6/4_6.sce
new file mode 100644
index 000000000..2f4f87eaa
--- /dev/null
+++ b/377/CH4/EX4.6/4_6.sce
@@ -0,0 +1,10 @@
+disp("Nd = f*(Ec-Ed) = (exp(((Ec-Ed-Ef)/(K)*(T))+1))^-1");
+disp("Ef=Ec-45 & Ed=45meV");
+disp("(Ec-Ed-Ef)=(Ec-45-(Ec-200)) = 155 meV = 2.48*10^-20 J");
+a= (2.48)*(10^-20);  //say (Ec-Ed-Ef)=a
+K=(1.38)*(10^-23);
+T=300;
+b=(exp(((a)/(K*T)))+1)^(-1);
+printf('the value of Nd = %f',b);
+d=b*100;  //'d' is the percentage value of Nd
+printf('\nSo the percentage of donor states that are occupied are %f percent',d);
+\ No newline at end of file