ELI5: Explain Like I'm 5

Thermophotovoltaic

Have you ever seen a flashlight? When you turn it on, it shines light, right? Well, have you ever felt how warm it gets when you leave it on for a while? That's because the energy from the batteries is making the flashlight get hot!

Now, what if we could use some of that heat to create electricity? That's what thermophotovoltaic technology does! First, we start with a material called a "hot emitter." This is something that gets really, really hot when we shine a light on it. When it gets hot, it starts to give off light - just like the flashlight we talked about earlier.

Then, we add something called a "photovoltaic cell." This is a special kind of material that can turn light into electricity! When the light from the hot emitter shines onto the photovoltaic cell, it creates a flow of electricity that we can use to power things like lights or computers.

The cool thing about thermophotovoltaic technology is that it's really efficient - it can turn almost all of the heat and light from the hot emitter into electricity! That means we can use it to generate energy from all kinds of things that get really hot, like furnaces or even the sun. And, because it doesn't need any moving parts, it can be really quiet and low-maintenance - we don't have to worry about any gears or motors breaking down.

So, that's how thermophotovoltaic technology works - by using heat and light to create electricity!