Light Emitting Diode (LED) | sabaq.pk

Have you ever wondered what makes a Light Emitting Diode (LED) shine? In today’s video, we’re diving into the fascinating world of LEDs and uncovering the science behind their incredible efficiency and vibrant colors.

We’ll start by exploring the flow of charge and how current moves through a PN Junction Diode. You’ll learn about the special role of semiconductor materials like silicon and how the structure of these materials, including pentavalent crystals, helps create light. We’ll break down concepts like forward biasing and reverse biasing, and we’ll explain the depletion region and the potential barrier that makes all of this possible.

You’ll also discover how energy levels play a role in light production, as we look at the conduction band and valence band through the lens of Bohr's Model. We’ll touch on some cool physics concepts, like Planck’s constant and how the frequency of light corresponds to its place in the electromagnetic spectrum—from microwaves to gamma rays.

Plus, we’ll explore different LED materials like Aluminium Gallium Indium Phosphide (ALGaInP) and Indium Gallium Nitride (InGaN), and how they contribute to the efficiency and color of our everyday bulbs.

Whether you’re a science enthusiast or just curious about how these little devices have changed the way we light our world, this video has something for everyone. So, let’s jump in and shed some light on Light Emitting Diodes!

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