Uses of Luminescent Pigments

In low-pressure (fluorescent) lamps the phosphor is excited by energy-rich mercury resonance lines at 254 and 185 nm. For many years the most important phosphors were the halophosphates. In the search for more efficient phosphors with greater 

Special applications of UV phosphors include fluorescent UV lamps for tanning (sun studios), photocopier lamps, and lamps for photochemistry, medicine, and varnish hardening. Examples are Ce(Mg, Ba)Al11019 (Amai = 344 nm), BaSi205 Pb2+ (351 nm), and (Ba, Zn, Mg)3 Si207 Pb2+ (303 nm). 

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