微波场作用下类球形亚超细CaS:Sm^(3+)的快速合成及其发光特性

Rapid Synthesis of the Near-spherical Phosphor CaS:Sm^(3+) with Submicron-scale in Microwave Field and Its Fluorescent Properties

在微波场作用下 ,快速合成了CaS :Sm3+琥珀色荧光材料。系统考察了微波场对不同浓度Sm3+离子掺杂的CaS :Sm3+磷光体发光特性的影响。采用含Li+、Na+、K+、NH4 +四种不同 + 1价阳离子的无机盐作助熔剂时 ,所得CaS基质平均粒径为 2 0 0～ 5 0 0nm ,且以采用Li+离子的无机盐作助熔剂制得的类球形亚超细CaS :Sm3+磷光体荧光强度最强。将微波法与传统合成法进行了比较。

The phosphors with CaS as the host and doped with Sm 3+ ion were synthesized in microwave field. The influence of different Sm 3+ concentrations on luminescent properties of these phosphors was discussed . The experimental results of SEM show that the crystallite structures of the CaS host with different shapes and submicron-scale (200～500 nm) can be obtained when adding the four fluxes (Li +,Na +,NH 4 +,K +).The fluorescent intensity of the near spherical phosphor CaS:Sm 3+ is the strongest under the condition of Li + as the flux.