Physics, asked by meenakshireddy5801, 1 year ago

What is the range of energy gap to obtain visible light from LED?

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Answered by vanshita38

The spectral range of visible light is from 0.4 μm to 0.7 μm It corresponds to photon energy from 1.8 eV to 3 eV. Hence for the fabrication of LED in visible range, the band gap of the semiconductor used shoud be 1.8 eV.

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