clc; clear; del_n0=10^16 //concentration of electrons in cm^-3 tau_n0=5 //excess carrier lifetime in s tau_n01=5*10^-6 //excess carrier lifetime in micro-s t=5 //in micro-s //Calculation del_nt=del_n0*exp(-t/tau_n0) //in cm^-3 Rn1=del_nt/tau_n01 mprintf("Recombination rate= %.1e cm^-3 s^-1",Rn1)