User:Jeanroyna/sandbox/LED Structures

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LED - Structure in brief

Light-emitting Diode

LEDs are vital for any Optical Communication System. It functions by converting the electrical signal to light signal. It acts as a source to the Optical Fiber Communication.

Structures:

The LED is constructed by forming a simple pn of a semiconductor. Such an LED is called a homojunction LED where the junction that is formed consists of the same semiconductor material.

       In general the structures are of 2 types:

Homojunction

Heterojunction

Practically the single and in particular the double heterojunctions are used instead of homojunctions LEDs because it offers:

 High radiance

 High quantum efficiency

 Carrier confinement

 Optical confinement. ...

References[edit]

External links[edit]

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