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Why is elemental semiconductor not suitable for producing visible light-emitting diodes (LEDs)?

Options

  1. AElemental semiconductors lack the necessary energy band structure for emitting visible light.
  2. BElemental semiconductors have too narrow a band gap to produce visible light.
  3. CElemental semiconductors produce light with frequencies in the infrared (IR) region.
  4. DElemental semiconductors do not respond to electric current in a way that allows for visible light emission.

Correct answer

C. Elemental semiconductors produce light with frequencies in the infrared (IR) region.

Step-by-step solution

Correct Option is : (C) Elemental semiconductors produce light with frequencies in the infrared (IR) region.

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