A POWDER COMPRISING BLUE LIGHT-EMITTING PHOSPHOR PARTICLES AND PREPARATION THEREOF

摘要

In particular wavelengths corresponding to the Xe ₂ molecular beam emitted from the Xe gas 172 provides a light emission intensity is enhanced in the blue light-emitting fluorescent substance for a vacuum ultraviolet ray powder ; this basic formula CaMgSi ₂ O ₆ :. represented by Eu as the die made of a blue light-emitting fluorescent substance offside powder particles having a crystal structure , the particle surface of the element Eu , Eu ^{2 +} 0.020 at% or more to the surface (where , atom % is present on the surface , Ca, Mg, Si, O, Eu ^{2 +} and Eu ^{3 +} Eu present in the total number per surface of ^{2 + under the conditions present in an amount of} means the percentage of the number of ), Eu ^{2 +} and Eu ^{3 +} 12 : 88 to 35 : characterized in that the powder mixture containing a ratio in the range of 65