🔴 LIGHT EMITTING DIODE or LED - Working Principle explained in HINDI
Ғылым және технология
In this Physics (Digital Electronics) video lecture in Hindi we explained the working principle of light emitting diode, known as LED. Light emmiting diode is made up using p-n junction diode. when this junction diode is connected to a DC source in forward bias, conduction electrons from n side fill the holes of the p side. In this process some energy is released in the form of photon (E=hv).
LEDs have many advantages over other light sources, including lower energy consumption, longer lifetime, improved physical robustness and smaller size.
Light-emitting diodes are used in applications as diverse as automobile headlamps, advertising, display boards, general lighting, traffic signals, camera flashes etc.
Following are some semiconductor materials used in different colour LED.
Infrared LED : Gallium arsenide (GaAs), Aluminium gallium arsenide (AlGaAs)
Red LED : Aluminium gallium arsenide (AlGaAs), Gallium arsenide phosphide (GaAsP), Aluminium gallium indium phosphide (AlGaInP), Gallium(III) phosphide (GaP)
Orange LED : Gallium arsenide phosphide (GaAsP), Aluminium gallium indium phosphide (AlGaInP), Gallium(III) phosphide (GaP)
Blue LED : Zinc selenide (ZnSe), Indium gallium nitride (InGaN), Silicon carbide (SiC) as substrate
For more details on different semiconductor materials used for different colour-LEDs click here :
en.wikipedia.org/wiki/Light-e...
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Arijit Daripa
EduPoint,
Dam Road,
Chandil,
Dist- Seraikela-Kharsawan,
Jharkhand,
India.
Пікірлер: 473
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@edupoint.physics
5 жыл бұрын
Harshit bhai, Good luck....
@harshitjain5757
5 жыл бұрын
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2 жыл бұрын
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2 жыл бұрын
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@vision6482
2 жыл бұрын
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@niteshchittora128
4 жыл бұрын
Acha
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@growwithbro7617
6 жыл бұрын
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5 жыл бұрын
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5 жыл бұрын
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5 жыл бұрын
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How the photon me develop from the emitting of elctrons
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3 ай бұрын
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बहुत बढ़िया सर
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Sir please , zener breakdown and zener diode par bhi video bna dijie
Thanks for teaching us
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So good explanation in your all basic electronics lecture but I think when short notes slides will be added in your video it will be very useful for us...
Sir white LED k case m forbidden energy gap kiya hoga?
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Sir can we use forward biase in this diod?
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Which material used for White colour making?
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sir aap bahut achha samjhate
e- cb se vb m q aa rha h Plz explain
Love from UP♥
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Sir , for white light of LED what is the forbidden gap and as white light is the combination of 7 colours there is different types of frequencies then how we calculate?
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Then according to your video the recombination occurs in p region?
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Sir magnetic system pe kaise 2nd law of thermodynamics applicable hain???
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sir hum current ko kese veri kar sakte hai