Phosphors having improved luminance and longer lifespan

摘要

A phosphor having increased luminance and lifespan which includes a halide flux of the Group 1 element of the periodic table has a perovskite structure and satisfies the following formula:; $PTEXTPDATMTiO/PDATHILSBPDAT3/PDAT/SB/HILPDAT:\; (A,B)/PDAT/PTEXT$ ;where M is an alkaline earth metal, A is a rare earth element, and B is a Group 13 element of the periodic table. The halide flux-containing phosphor shows good luminance and lifespan characteristics compared to conventional phosphors without using sulfur and environmentally harmful cadmium in a host matrix. Therefore, the phosphor is advantageously utilized for various display applications including vacuum fluorescent displays (VFDs) and field emission displays (FEDs).