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diff --git a/3636/CH10/EX10.2/Ex10_2.sce b/3636/CH10/EX10.2/Ex10_2.sce
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+clc;
+clear;
+Na=3*10^18 //in cm^-3
+Nd=2*10^16 //in cm^-3
+Dn=25 //in cm^2/s
+Dp=10 //in cm^2/s
+tau_n0=4*10^-7 //in s
+tau_p0=10^-7 //in s
+JL=20*10^-3 //photocurrent density in mA/cm^2
+T=300 //in K
+ni=1.5*10^10 //in cm^-3
+e=1.6*10^-19 //in Joules
+Const=0.026 //constant for KT/e in V
+
+//Calculation
+Ln=sqrt(Dn*tau_n0) //in mmicro-m
+Lp=sqrt(Dp*tau_p0) //in micro-m
+JS=e*ni^2*((Dn/(Ln*Na))+(Dp/(Lp*Nd))) //reverse saturation current density in A/cm^2
+Voc=Const*log(1+(JL/JS))
+
+mprintf("open-circuit voltage Voc= %0.3f V",Voc)