Rare Earth Luminescent Materials are produced by the hopping of rare earth 4f electrons between different energy levels. The luminescence can be divided into photoluminescence, cathodluminescence, electroluminescence, radiation luminescence, X-ray luminescence, triboluminescence, chemiluminescence, and bioluminescence.
Rare earth luminescence has strong absorption capacity, high conversion efficiency, and can emit spectrum from ultraviolet ray to infrared light, especially in the visible light region.
Rare earth luminescent materials have been widely used in display imaging, new light sources, X-ray illuminating screens and other aspects.
