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Why do we not make LEDs out of silicon?

✅ The verified answer to this question is available below. Our community-reviewed solutions help you understand the material better.

Why do we not make LEDs out of silicon?

Si has an indirect bandgap which makes it difficult for electrons and holes to recombine.

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The wavelength of light being released when electrons and holes recombine are not within the visible region.

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Too much energy would be required to produce the light

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Si does not have a band gap that meets the requirement for visible light.

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