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// Example 6.21.2 page 6.59
clc;
clear;
tr=30; //radiative recombination lifetime
tnr=100; //non-radiative recombination lifetime
h=6.624d-34; //plank's constant
c=3d8; //speed of light
q=1.6d-19; //charge of electron
i=40d-3; //current
lamda=1310d-9; //wavelength
t=tr*tnr/(tr+tnr); //computing total recombination time
eta=t/tr; //computing internal quantum efficiency
Pint=eta*h*c*i/(q*lamda); //computing internally generated power
Pint=Pint*10^3
printf("\nTotal recombinaiton time is %.2f ns.\nInternal quantum efficiency is %.3f.\nInternally generated power is %.2f mW.",t,eta,Pint);
//answer in the book for Total recombinaiton time is 23.07 ns, deviation of 0.01ns.
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