公开(公告)号：US10144868B2

公开(公告)日：2018-12-04

申请号：US14551602

申请日：2014-11-24

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： So Hye Cho ,  Seung Yong Lee ,  Khan Sovann ,  Jong Ku Park ,  Sun Jin Kim ,  Ho Seong Jang

IPC: C09K11/77 ,  C09K11/08 ,  H01L33/50 ,  C09K11/55 ,  C09K11/60 ,  C01F17/00 ,  H01L31/055

Abstract: The present invention relates to a novel method for preparing a water-insoluble metal hydroxide, and a use thereof. The water-insoluble metal hydroxide of the present invention is conveniently and efficiently prepared s through the high-temperature heat treatment step two times and the washing step, and thus contains a small amount of an alkali metal and has a high crystallinity and a phase purity. The water-insoluble metal hydroxide of the present invention or metal oxide therefrom exhibits an absorption wavelength at a low wavelength range (for example, 490 nm or less) and a light emitting wavelength at a high wavelength range (for example, from 500 nm or more to less than 1,100 nm). Accordingly, the water-insoluble metal hydroxide of the present invention may be efficiently used in various applications such as a fire retardant, an antacid, an adsorbent and so forth, and may also be doped with another metal ion to be utilized as a raw material for fabricating a catalyst, a fluorescent material, an electrode material, a secondary battery material and the like.

公开(公告)号：US09657225B2

公开(公告)日：2017-05-23

申请号：US14639385

申请日：2015-03-05

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong Jang ,  Su Yeon Kim ,  Sun Jin Kim ,  So-Hye Cho ,  Seung Yong Lee

IPC: C09K11/77 ,  C09K11/02 ,  G01N21/64 ,  H01L31/0232 ,  B82Y20/00 ,  B82Y40/00

CPC classification number: C09K11/7791 ,  B82Y20/00 ,  B82Y40/00 ,  C09K11/025 ,  C09K11/7773 ,  H01L31/02322 ,  H01L31/055 ,  Y02E10/52 ,  Y10S977/773 ,  Y10S977/779 ,  Y10S977/95

Abstract: The present invention relates to a nanophosphor which may be used as a wavelength conversion part of a solar cell, a fluorescent contrast agent, and a light emitting part of a display device, and a synthesis method thereof. The nanophosphor of the present invention is excited by ultraviolet light to exhibit strong green light emission, and has multicolor light emission characteristics capable of controlling a color such as green, yellowish green, yellow, and orange color by only adjusting the amount of a doping agent.