| 摘要 |
Provided in the present invention is a metal nanoparticle-coating titanate fluorescent material, which has a molecular formula of A1-x-yByTiO3:xR@SiO2@Mz, where A is one or two elements selected from Ca, Sr, Ba and Mg, where B is one element selected from Li, Na and K, where R is one or two elements selected from Eu, Gd, Tb, Tm, Sm, Ce, Dy and Mn, where M is one selected from Ag, Au, Pt, Pd and Cu nanoparticles, where 0<x≦0.40; 0≦y≦0.40, where z is the molar ratio of M and SiO2, where 0<z≦1×10−2, where @ represents a coating, where M is a core where SiO2 is an intermediate layer shell, and where A1-x-yByTiO3:xR is an outer layer shell. The metal nanoparticle-coating titanate fluorescent material forms a core-shell structure by introducing metal nanoparticles, while the metal nanoparticles generate a Plasmon resonance effect, thus increasing the internal quantum efficiency of the metal nanoparticle-coating titanate fluorescent material, which is provided with increased luminescent intensity. Also provided in the present invention is a preparation method for the metal nanoparticle-coating titanate fluorescent material. |
| 主权项 |
1. A metal nanoparticle-coating titanate fluorescent material, wherein having the molecular formula of A1-x-yByTiO3:xR@SiO2@Mz,
where A is one or two elements selected from Ca, Sr, Ba and Mg; B is one element selected from Li, Na and K; R is one or two elements selected from Eu, Gd, Tb, Tm, Sm, Ce, Dy and Mn; M is one selected from Ag, Au, Pt, Pd and Cu nanoparticles; 0<x≦0.40; 0≦y≦0.40; z is the molar ratio of M and SiO2, where 0<z≦1×10−2;
@ represents a coating, M is a core, SiO2 is an intermediate layer shell, and A1-x-yByTiO3:xR is an outer layer shell. |
