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+clc;
+clear;
+ni=1.5*10^10 //in cm^-3
+epsilon_si=11.7 //in F/cm
+epsilon_0=8.85*10^-14 //in F/cm
+e=1.6*10^-19 //in J
+Na=10^16 //in cm^-3
+Nd=5*10^16 //in cm^-3
+tau_p0=4*10^-7 //in s
+tau_n0=2*10^-7 //in s
+
+//Calculation
+W=(((2*epsilon_si*epsilon_0)*(Na+Nd)*4)/(e*Na*Nd))^0.5 //in micro-m
+tau_m=(tau_p0+tau_n0)/2 //in s
+Jgen=(e*ni*W)/(2*tau_m)
+
+mprintf("reverse-bias generation current density= %1.2e A/cm^2",Jgen) //The answers vary due to round off error