Cadmium Zinc Telluride is a special material that is used in some types of cameras and X-ray machines.
Now, imagine you are building a camera or X-ray machine that can see through things. You need a special material that can absorb some of the X-rays and turn them into electrons (tiny particles that can get sent to a computer to make a picture).
Cadmium Zinc Telluride is really good at doing this job because it can absorb a lot of X-rays and create a lot of electrons. That’s why it is used in these types of machines!
However, this material is also really expensive and can be hard to find. So, scientists are always trying to figure out how to make it even better or find other materials that can do the same job.