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//Example 6.4
//Program to compare the approximate radiative minority carrier
//lifetimes in gallium arsenide and silicon
clear;
clc ;
close ;
//Given data
N=10^18; //per cm^3 - HOLE CONCENTRATION
Br1=7.21*10^(-10); //cm^3 / s - RECOMBINATION COEFFICIENT FOR GaAs
Br2=1.79*10^(-15); //cm^3 / s - RECOMBINATION COEFFICIENT FOR Si
//Radiative minority carrier lifetime for GaAs
tau_r1=1/(Br1*N);
//Radiative minority carrier lifetime for Si
tau_r2=1/(Br2*N);
//Displaying the Results in Command Window
printf("\n\n\t Radiative minority carrier lifetime for GaAs is %0.2f ns.",tau_r1/10^(-9));
printf("\n\n\t Radiative minority carrier lifetime for Si is %0.2f ms.",tau_r2/10^(-3));
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