Question
Download Solution PDFWhat colour LED lamp is commonly used for domestic use?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFLight Emitting Diode:
- A light-emitting diode (LED) is a semiconductor light source.
- Electroluminescence is the working principle of LED.
- A light-emitting diode emits light when a current flows through it.
- Infrared LEDs are used in remote-control circuits.
- Warm white lighting fixtures are often preferred in living rooms to create a peaceful atmosphere.
- The warm white lights are a good choice to compliment earthy tones and wood furniture.
- White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.
Important Points
- A light-emitting diode (LED) is a semiconductor device that emits visible light when an electric current passes through it
- Light Emitting Diode (LED) works only in the forward bias condition
- When free electrons reach the junction or depletion region, some of the free electrons recombine with the holes in the positive ions
- Free electrons recombine with holes in the depletion region
- In a similar way, holes from the p-side recombine with electrons in the depletion region.
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