What does LED stand for in semiconductor electronics?

Correct option is C

The correct answer is (c) Light Emitting Diode

Explanation:

• LED stands for Light Emitting Diode, which is a semiconductor device that emits light when an electric current flows through it. The emitted light is a result of electroluminescence, where electrons recombine with holes in the semiconductor material, releasing energy in the form of photons (light).
• LEDs are widely used in lighting, displays, indicators, and optical communication due to their energy efficiency, long lifespan, and compact size.

Information Booster

Working Principle of LED:

• Made of a semiconductor material (commonly Gallium Arsenide or Gallium Phosphide).
• When a forward voltage is applied, electrons and holes recombine, emitting light.
• The color of the emitted light depends on the bandgap energy of the semiconductor material.

Advantages of LEDs Over Traditional Bulbs:

• Energy-efficient – Consume less power.
• Long lifespan – Lasts longer than incandescent and CFL bulbs.
• Eco-friendly – No toxic elements like mercury.
• Fast switching – Lights up instantly.