公开(公告)号：US20090315446A1

公开(公告)日：2009-12-24

申请号：US12427138

申请日：2009-04-21

申请人： Norio MURASE ,  Chunliang LI ,  Masanori ANDO

发明人： Norio MURASE ,  Chunliang LI ,  Masanori ANDO

IPC分类号： H01J1/62 ,  C23C18/14 ,  B32B5/02 ,  C09K11/08 ,  C09K11/56 ,  C09K11/54 ,  C09K11/70

CPC分类号： C09K11/70 ,  B82Y30/00 ,  C09K11/02 ,  C09K11/565 ,  C23C18/122 ,  C23C18/1254 ,  C23C18/14 ,  Y10S977/778 ,  Y10S977/815 ,  Y10S977/816 ,  Y10S977/818 ,  Y10S977/819 ,  Y10S977/82 ,  Y10S977/826 ,  Y10S977/834 ,  Y10T428/268

摘要： The present invention provides nanoparticles having a core/shell structure consisting of a core comprising a Group III element and a Group V element at a molar ratio of the Group III element to the Group V element in the range of 1.25 to 3.0, and a shell comprising a Group II element and a Group VI element and having a thickness of 0.2 nm to 4 nm, the nanoparticles having a photoluminescence efficiency of 10% or more and a diameter of 2.5 to 10 nm; a method of producing the water-dispersible nanoparticles comprising bringing a dispersion of III-V semiconductor nanoparticles in an organic solvent into contact with an aqueous solution of a Group II element-containing compound and a Group VI element-containing compound to thereby transfer the III-V semiconductor nanoparticles of the organic solvent dispersion to the aqueous solution, and then irradiating the aqueous solution with light; and a method of producing a glass matrix having the nanoparticles dispersed therein.The present invention provides III-V semiconductor nanoparticles having a high photoluminescence efficiency in an aqueous solution, and a method of producing the nanoparticles. The invention further provides a fluorescent material with high PL efficiency containing the III-V semiconductor nanoparticles retained in a glass matrix, a method of producing the fluorescent material, and a light-emitting device containing the fluorescent material.

摘要翻译： 本发明提供具有由包含III族元素和V族元素的芯组成的核/壳结构的纳米颗粒，其中III族元素与V族元素的摩尔比在1.25至3.0的范围内，壳体 包含II族元素和VI族元素，并且具有0.2nm至4nm的厚度，所述纳米颗粒的光致发光效率为10％以上，直径为2.5〜10nm; 制备水分散性纳米颗粒的方法包括使III-V族半导体纳米颗粒在有机溶剂中的分散体与含有II族元素的化合物和含VI族元素的化合物的水溶液接触，从而将III -V半导体纳米颗粒的有机溶剂分散到水溶液中，然后用光照射水溶液; 以及制备其中分散有纳米颗粒的玻璃基质的方法。 本发明提供了在水溶液中具有高光致发光效率的III-V族半导体纳米粒子，以及制造纳米粒子的方法。 本发明还提供一种含有保留在玻璃基质中的III-V族半导体纳米粒子的PL效率高的荧光材料，荧光材料的制造方法以及含有荧光体的发光元件。