1 files changed, 48 insertions, 0 deletions
diff --git a/3440/CH4/EX4.2/Ex4_2.sce b/3440/CH4/EX4.2/Ex4_2.sce
new file mode 100644
index 000000000..c83e43a45
--- /dev/null
+++ b/3440/CH4/EX4.2/Ex4_2.sce
@@ -0,0 +1,48 @@
+clc
+
+T=300//K
+k=8.617*10^-5 //eV/K
+q=1.6*10**-19 //C
+A=5*10^-4//m^2
+V=0.6//V
+Dp=10//cm^2/sec
+De=1//cm^2/sec
+Dc=2//cm^2/sec
+taup=10^-7//sec
+taue=10^-8//sec
+ND=10^17
+NE=10^19
+W=0.5*10^-4//cm
+ni=9.65*10^9
+Lp=sqrt(Dp*taup)
+disp(Lp,"Lp in cm=")
+pn0=ni^2/ND
+disp(pn0,"pn0 in cm^-3=")
+Le=sqrt(De*taue)
+disp(Le,"Le in cm=")
+nE0=ni^2/NE
+disp(nE0,"nE0 in cm^-3=")
+IEp=exp(V/(k*T))*(q*pn0*Dp*A/W)
+disp(IEp,"IEp in A")
+Icp=IEp
+disp(Icp,"Icp in A =")
+IEn=(q*nE0*De*A/10^-4)*(exp(V/(k*T))-1)
+disp(IEn,"IEn in A =")
+alpha0=Icp/(IEp+IEn)
+disp(alpha0,"alpha0 is= ")
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