The Energy level of the electrons is high than holes because electrons are more mobile than holes i.e. current conduction due to electrons are more. During the recombination of electrons and holes, some portion of energy must be dissipated or emitted in the form of heat and light.

As shown in the figure above, electrons start moving from n-region and holes start moving from p-region. When they moved from their regions they start to recombine across the depletion region. Free electrons will remain in the conduction band of energy level while holes remain in the valence band of energy level.

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on the visible light spectrum scale, the __________.

The phenomenon into which light emits from the semiconductor under the influence of the electric field is known as electroluminescence.

Hi Sultana, Glad you asked us. and Sorry for late reply. What exactly you need to know about White LED? Asking it so that we can cover it up in our article.

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Identify a characteristic of LED bulbsmilady

A light emitting diode is a semiconductor device. It is a PN junction that emits or produces light when an electric current passes through it. The LED lighting can be more versatile, efficient and long-lasting as compared to compact fluorescent lighting. This type of diode emits narrow bandwidth of visible light or invisible light at different color wavelengths for remote control. It is preferable because it is small in area and to shape its radiation pattern many optical components may be used.

When the p-n junction is forward biased, the majority carriers; either electrons or holes; start moving across the junction.

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Identify a characteristic of LED bulbsquizlet

sir i have a question that how to improve the lifetime of industrial using leds with low cost . increasing the temperature is one of the main reason for less lifetime please give any idea

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Always remember that the majority of light is produced from the junction nearer to the p-type region. So diode is designed in such a way that this area is kept close to the surface of the device to ensure that the minimum amount of light is absorbed.

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Identify atrue statement about polymer gels

Though very tiny but they glow brightly in the dark. Some of them just glow constantly, and some of them switch their state On/Off and vice-versa. I hope you have got an idea of what we are going to discuss in this article. If not, see the image below for better understanding. Yes, we are going to learn about Light Emitting diodes and LED lights their working, and how they are constructed. But first, let’s learn about its definition.

THE INFORMATION ABOUT THE LIGHTS IS VERY WELL. I HAVE A QUESTION FOR YOU. IF WE GIVE 5V , 2 mA SUPPLY FOR 4V RATED LED BULB THEN WHAT HAPPEND. PLEASE TELL ME.

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Analyse A Meter is an Educational resource site for Electronics, Electrical with the Easiest explaining Guides and Tutorials on Industrial Measurement Tools.

A light emitting diode or LED is a PN semiconductor device. The PN Junction produces light when electric current passes through it.

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Ring-shaped lights offer a convenient and flattering light, they are incredibly popular for solo video projects like vlogging and live streaming.

Ever seen small bulbs probably in size of a millimeter that we mostly use in decorating our house, shop, etc in Christmas, New Year, Diwali, or any other occasion? They are LED Bulbs.

Hi Mahaboob Basha, Thanks for your question. Well if we pass 5V, 2mA current through 4v rated led bulb, then it will glow only when we connect a current limiting resistance in series. 2mA current is very low for any LED depending upon the colour of the led bulb, like the red led bulb requires minimum 5mA current & white led bulb requires 20mA. Feel free to ask any question relating to electronics. Really appreciate your interest.