4 files changed, 46 insertions, 0 deletions
diff --git a/3440/CH14/EX14.1/Ex14_1.sce b/3440/CH14/EX14.1/Ex14_1.sce
new file mode 100644
index 000000000..5b078342a
--- /dev/null
+++ b/3440/CH14/EX14.1/Ex14_1.sce
@@ -0,0 +1,17 @@
+clc
+
+D=2*10^-14//cm^2/sec
+t=3600//K
+Cx=10^19
+A=sqrt(D*t)
+disp(A,"A in cm is= ")
+Qt=1.13*Cx*A
+disp(Qt,"Q(t) in atoms/cm^3")
+//dC/dx=b
+b=-(Cx/sqrt(%pi*D*t))
+disp(b,"dC/dx in cm^-4 is= ")
+xj=2*sqrt(D*t)*2.75
+disp(xj,"xj in meter is= ")
+b=-(Cx/sqrt(%pi*D*t))*exp(-xj^2/(4*D*t))
+disp(b,"dC/dx in cm^-4 is= ")
+
diff --git a/3440/CH14/EX14.2/Ex14_2.sce b/3440/CH14/EX14.2/Ex14_2.sce
new file mode 100644
index 000000000..fe2f223c4
--- /dev/null
+++ b/3440/CH14/EX14.2/Ex14_2.sce
@@ -0,0 +1,9 @@
+clc
+
+T=1473//K
+k=8.614*10^-5
+D0=24//cm^2/sec
+Ea=4.08//eV
+D=D0*exp(-Ea/(k*T))
+disp(D,"D in cm^2/sec")
+//a=t*log(t)-10.09*t+8350           t=1190 solving this equation
diff --git a/3440/CH14/EX14.3/Ex14_3.sce b/3440/CH14/EX14.3/Ex14_3.sce
new file mode 100644
index 000000000..a3e08bf06
--- /dev/null
+++ b/3440/CH14/EX14.3/Ex14_3.sce
@@ -0,0 +1,14 @@
+clc
+
+w=20//m
+q=1.6*10^-19
+t=60//sec
+nx=2.85*10^19
+disp(nx,"nx in ions/cm^3")    //havent solved in textbook 
+d=5*10^14//ions/cm^2
+Q=d*%pi*(20/2)^2
+disp(Q,"Q in ions is= ")
+I=(q*Q)/t
+disp(I,"I in A is= ")
+
+
diff --git a/3440/CH14/EX14.4/Ex14_4.sce b/3440/CH14/EX14.4/Ex14_4.sce
new file mode 100644
index 000000000..739d48c24
--- /dev/null
+++ b/3440/CH14/EX14.4/Ex14_4.sce
@@ -0,0 +1,6 @@
+clc
+
+Rp=0.53//um
+sigmap=0.093//um
+d=Rp+3.96*sigmap
+disp(d,"d in um is= ")