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// Example 6.21.1 page 6.59
clc;
clear;
tr=50; //radiative recombination lifetime
tnr=85; //non-radiative recombination lifetime
h=6.624d-34; //plank's constant
c=3d8; //speed of light
q=1.6d-19; //charge of electron
i=35d-3; //current
lamda=0.85d-6; //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 %.1f mW.",t,eta,Pint);
//answer in the book for Internal quantum efficiency is 0.629, deviation of 0.001.
//answer in the book for Internally generated power is 32.16 mW, deviation of 0.04 mW.
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