Photoluminescence

Photoluminescence Introduction Photoluminescence is the phenomenon of the interaction of light with matter, which causes the material to glow when illuminated. This process is caused by electrons moving to a higher energy level, which then return to the base level, emitting photons of light.

In nature, bacteria, quartz crystals, and some plants and animals, such as squid, fireflies, jellyfish and insects, photoluminesce. The phenomenon is also known in solid state physics, where crystals are used to create detectors and lasers. Properties The main characteristic of photoluminescent materials is their ability to glow after exposure to light of a certain wavelength.