what are light emitting diodes made of

What are light emitting diodes made of?

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Light emitting diodes are a semiconducting device. LEDs are made on single crystal silicon carbide substrates. The semiconductor layer is doped with dissimilar dopants to create a pn junction.

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Then again, this answer might help you...

Light-emitting diodes are made from variety of inorganic semiconductor materials. The composition of LEDs depends on the color of the light emitted. Most LEDs are made from GaAs (Gallium arsenide).

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