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//Example 8.3
//Program to determine the wavelength above which an intrinsic
//photodetector will cease to operate
clear;
clc ;
close ;
//Given data
e=1.602*10^(-19); //Coulumbs - CHARGE OF AN ELECTRON
h=6.626*10^(-34); //J/K - PLANK's CONSTANT
c=2.998*10^8; //m/s - VELOCITY OF LIGHT IN VACCUM
Eg=1.43*e; //V - BANDGAP ENERGY
//Wavelength determination
Lambda_c=h*c/Eg;
//Displaying the Result in Command Window
printf("\n\n\t The wavelength above which an intrinsic photodetector will cease to operate is %0.2f um.",Lambda_c/10^(-6));
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