公开(公告)号：US09842962B2

公开(公告)日：2017-12-12

申请号：US14737464

申请日：2015-06-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Kyoungja Woo ,  Hyein Yoo

IPC: H01L29/06 ,  H01L31/00 ,  H01L29/08 ,  H01L33/00 ,  H01L33/06 ,  G01J5/60 ,  G01J3/50 ,  G01J1/42 ,  H01L33/50

CPC classification number: H01L33/06 ,  B82Y20/00 ,  B82Y30/00 ,  G01J1/42 ,  G01J3/50 ,  G01J5/60 ,  G02B1/111 ,  H01L33/002 ,  H01L33/0025 ,  H01L33/0029 ,  H01L33/005 ,  H01L33/0066 ,  H01L33/0087 ,  H01L33/502

Abstract: A nanostructured hybrid particle, a manufacturing method thereof, and a device including the nanostructured hybrid particle are disclosed. The nanostructured hybrid particle includes a hydrophobic base particle having a convex-concave nanopattern on a surface thereof; a hydrophobic light-emitting nanoparticle disposed in a concave portion of the convex-concave nanopattern on the surface of hydrophobic base particle; and a coating layer covering the hydrophobic base particle and the hydrophobic light-emitting nanoparticle. In the nanostructured hybrid particle, light extraction may occur in all 3-dimensional directions, and thus, the nanostructured hybrid particle can exhibit high light extraction efficiency compared to light extraction occurring on a two-dimensional plane.

公开(公告)号：US09382476B2

公开(公告)日：2016-07-05

申请号：US13863672

申请日：2013-04-16

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sunjin Kim ,  Kyoungja Woo ,  Sohye Cho ,  Yumi Na ,  Jongku Park

IPC: C09K11/77

CPC classification number: C09K11/7734 ,  C09K11/7706 ,  C09K11/7774

Abstract: The present disclosure relates to a method for preparing a silicate phosphor and the silicate phosphor. The method includes (1) a hydrothermal treatment step of obtaining a layered silicate substituted with a rare-earth metal by hydrothermally treating an aqueous solution as a reaction solution, the solution containing rare-earth metal ions, NaOH and silica, and (2) a calcinating step of forming a crystalline silicate by calcinating the layered silicate substituted with the rare-earth metal. According to the method for preparing the silicate phosphor, the silicate phosphors, which can be used as phosphors for LEDs in the aspects of high covalent character, high luminescent intensity and stability at high temperature, may be prepared by a simplified, economic process. Also, the silicate phosphors may selectively emit red, green or blue light by virtue of the substitution of a silicon position with rare-earth metals of various types.

Abstract translation: 本公开涉及一种制备硅酸盐荧光体和硅酸盐荧光体的方法。 该方法包括：（1）水热处理步骤，通过水热处理作为反应溶液的水溶液获得由稀土金属取代的层状硅酸盐，所述溶液含有稀土金属离子，NaOH和二氧化硅，和（2） 通过煅烧由稀土金属取代的层状硅酸盐形成结晶硅酸盐的煅烧步骤。 根据制备硅酸盐荧光体的方法，可以通过简化的经济方法制备可在高共价特性，高发光强度和高温下的稳定性方面用作LED的荧光体的硅酸盐荧光体。 此外，硅酸盐荧光体可以通过用各种类型的稀土金属代替硅位置来选择性地发射红色，绿色或蓝色光。

公开(公告)号：US09796923B2

公开(公告)日：2017-10-24

申请号：US14250769

申请日：2014-04-11

Applicant: Korea Institute of Science and Technology

Inventor： Ho Seong Jang ,  Kyoungja Woo ,  Su Yeon Kim

IPC: A61K9/00 ,  C09K11/77 ,  C09K11/02 ,  A61K49/00 ,  A61K49/18

CPC classification number: C09K11/7773 ,  A61K49/0067 ,  A61K49/1827 ,  C09K11/025 ,  C09K11/7791

Abstract: A nanophosphor in accordance with one exemplary embodiment of the present disclosure includes a fluoride-based nanoparticle co-doped with Ce3+ and one selected from a group consisting of Tb3+, Eu3+ and a combination thereof. The nanophosphor may be excited by a single wavelength of ultraviolet rays to emit various colors of green, yellow, orange, red and the like, and exhibit high photostability without photoblinking. The nanophosphor may be utilized as a bio imaging contrast agent, a transparent display device, an anti-counterfeit code and the like.

公开(公告)号：US09422474B2

公开(公告)日：2016-08-23

申请号：US13869453

申请日：2013-04-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong Jang ,  Kyoungja Woo ,  Kipil Lim

IPC: A61K9/14 ,  C09K11/77 ,  C09K11/02 ,  B82Y40/00 ,  B82Y20/00

CPC classification number: C09K11/7773 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/02 ,  Y10S977/773 ,  Y10S977/892 ,  Y10S977/896 ,  Y10S977/93 ,  Y10S977/948 ,  Y10S977/95 ,  Y10T428/2982

Abstract: The present invention relates to a nanophosphor and a synthesis method thereof, and provides a nanophosphor comprising a first compound of Formula 1, wherein the first compound is fluoride-based one which is co-doped with Ce3+ and Tb3+. NaGd1−p−q−rMrF4:Ce3+p,Tb3+q  (1) In the Formula 1, descriptions on the p, q, r and M are overlapped with what was described in the detailed description of the present invention, so their concrete description are omitted. The nanophosphor has good light emission intensity and magnetic property as well as up-conversion and/or down-conversion property able to emit visible light after excitation by infrared and/or ultraviolet rays, so can be applied to a contrast agent and a counterfeit prevention code.

Abstract translation: 纳米荧光体及其合成方法技术领域本发明涉及纳米荧光体及其合成方法，其特征在于，提供包含第一化合物的纳米荧光体，其中第一化合物为与Ce 3+和Tb 3+共掺杂的基于氟化物的纳米荧光体。 NaGd1-p-q-rMrF4：Ce3 + p，Tb3 + q（1）在式1中，关于p，q，r和M的描述与本发明的详细描述中所描述的相互重叠， 具体描述省略。 纳米荧光体具有良好的发光强度和磁特性以及能够通过红外线和/或紫外线激发后能够发出可见光的上转换和/或下变换特性，因此可以应用于造影剂和防伪 码。