SrTiO3:Pr, A1 based phosphor having efficient emission at low voltage

Abstract

A SiTiO3:Pr, Al based phosphor having efficient emission at a low voltage, which is an oxide phosphor emerging as a very likely substitute for sulfide based phosphors. The SrTiO3:Pr, Al based phosphor has the composition of (MeIMeIIMeIII)TiO3. A2O3 obtained by adding MeII to a phosphor having the composition of (MeIMeIII)TiO3. A2O3, where MeI is a metal selected from the group consisting of magnesium (Mg), calcium (Ca), strontium (Sr) and barium (Ba), MeII is a metal of zinc (Zn) or cadmium (Cd), MeIII is a metal selected from the group consisting of praseodymium (Pr), europium (Eu), terbium (Tb), erbium (Er), cerium (Ce) and thulium (Tm), and A is a metal selected from the group consisting of aluminum (Al), gallium (Ga), indium (In) and thallium (Tl). The SrTiO3:Pr, Al based phosphor can enhance luminance without changing CIE chromaticity (x=0.67, y=0.33), and thus it is applicable to display devices including cathodeluminescence (CL) devices operating with low voltages.

Dependencies are inferred from the claim text.