LED Full Form, Light Emitting Diode, LED IN JEE Main Physics Syllabus 2024

LED Full Form : The LED Full Form is Light Emitting Diode, an important concept in JEE Main Physics Syllabus 2024 . It is a small light bulb that glows when electricity passes through it. The LED devices are energy efficient, durable, and versatile in nature. These light bulbs produce a lesser amount of carbon, which makes them a conventional source of energy.

What is a Light Emitting Diode (LED)?

Benefits of Using LED Lights

• It is a semiconductor device that glows when electricity is passed through it to produce light.
• LEDs support sustainability as they do not contain mercury, which is a hazardous material. It helps reduce bad carbon emissions, which contribute to greenhouse and global warming effects.
• It is an energy-efficient light source. It consumes less electricity as compared to the traditional lights used before.
• LED lights last long and also have low maintenance.
• The LED lights can be dimmed, which provides flexibility in controlling light levels.
• It is environmentally friendly.
• There is a wide range of colour options available in LED Lights.
• The LED bulbs are recyclable and easy to maintain.

Working of LED

• The LED is a semiconductor that works on a phenomenon called electroluminescence.
• It is a PN Junction diode where the N region is negatively doped, and the P region is positively doped.
• The electron-hole pair formation occurs at the P-N junction when a voltage of sufficient energy passes. When connected to a power source, the electrons from the N side move to the P-type region. Also, the holes from the P-type region move toward the N-type region. The electrons and holes combine to form a P-N junction.
• When an electron combines with the hole, it loses energy in the form of energy packets called Photons.

Difference Between LEDs and CFLs