Light-emitting Diodes

Question

Design Specs;

Emission Wavelength ? = .6702 ?m.

-optical power output Pout = 1mW

a. calculate current and voltage needed to obtain 1mW optical power output

b. calculate ?ext and find the current and voltage needed to obtain the desired optical output. Once you know the current density choose Area and Find Vf that will give you the desired current density and current (If= Jf x A= Jn A)

c. How would you improve your LED structure in terms of anti-reflection coating

d. how would you improve your design by incorporating TIP sturcture in terms of reduced loss due to internal reflection and and reflection of back photons. Assume Eg = 2.05 eV.

Explanation / Answer

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Acronym: LED

Definition: semiconductor diodes that emit light via electroluminescence

German: lichtemittierende Dioden

A light-emitting diode (LED) is an optoelectronic device which generates light viaelectroluminescence. It contains a p

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