ELI5: Explain Like I'm 5

Quantum-confined Stark effect

Okay, kiddo, let me tell you about something called the quantum-confined stark effect. Have you heard of atoms? They are the tiny particles that everything is made of. Now, these atoms can come together to form different materials like metals or semiconductors. Hmmm...let's say we have a piece of semiconductor made up of lots of tiny atoms that all have electrons moving around them.

Have you ever seen a toy car or a ball? Imagine that we have lots of balls, one on top of the other. And each ball can be described as a tiny world where there are lots of smaller things called electrons spinning around them. It's like a solar system but super, super tiny.

When we shine light on this semiconductor, some of the electrons in the atoms start to move around and jump from one atom to another. And when the electrons move, they create and release energy in the form of light, again.

But wait a second, kiddo, things get interesting when we make a change to the semiconductor. We can squeeze it or make it smaller in some way so that the electrons have less space to move around. This makes them behave differently, which is where the quantum-confined stark effect comes in.

The quantum-confined stark effect happens because we can control the movement of electrons in the semiconductor by applying electric fields to it. This makes the electrons move in a different way, and so they release different types of energy.

So, the effect is that the electrons inside the semiconductor get all packed up and can't move around as much as they used to when we apply electric fields. Now this causes them to release the energy in slightly different ways because they all get squeezed together. That's Quantum-confined stark effect!