| 摘要 |
A stannate luminescent material, having the general molecular formula of Ln 2-x Eu x Sn 2 O 7 @SnO 2 @M y , wherein Ln is selected from one of Gd, Y and La; M is selected from at least one of Ag, Au, Pt, Pd and Cu metallic nanoparticles; 0<x<1.5; y is the ratio between the molar mass of M and the sum of the molar mass of Sn in Ln 2-x Eu x Sn 2 O 7 and the molar mass of Sn in SnO 2 @M y , 0<y‰¤1×10 -2 ; and @ represents coating; the stannate luminescent material uses M as a core, SnO 2 as an inner shell, and Ln 2-x Eu x Sn 2 O 7 as an outer shell. The stannate luminescent material is formed into a core-shell structure through the coating of at least one of Ag, Au, Pt, Pd and Cu metallic nanoparticles. The metallic nanoparticles improve the internal quantum efficiency of the luminescent material, thus enabling the stannate luminescent material to have a relatively high luminous intensity. |
