Lanthanum La
Europium, named after the continent of Europe, is mainly used for its phosphorescence. For example, europium oxide, a red phosphor, has been used in the screens of colored TV and fluorescent lamps. Europium is also used to create phosphor marks on Euro banknotes for preventing counterfeiting. Nowadays, europium is doped to different host materials to produce nanophosphors, which are useful probes for scientific research.
The phosphor used for display is generally required to be a narrow spectrum, and the spectrum can also have a high color purity when passing through the liquid crystal panel to meet the high color purity RGB tricolor needs in the high display light source, while the KSF spectrum is narrower than the nitride spectrum (less than 5nm), the peak wavelength is 630nm, and there is better color performance. The key to achieving high gamut coverage lies in the choice of green and red phosphor, and the red powder in the best scheme to achieve high gamut coverage is fluoride, also known as KSF(K2SiF6:Mn4+).
Rare earth long persistence phosphor is a rare earth luminescent material. The advantages of rare earth luminescent materials include stable physical and chemical properties, high temperature resistance, narrow spectral band, high color purity, bright color, high light conversion efficiency, strong absorption capacity, wide wavelength distribution, etc.
