Title:
INFRARED-EXCITED INFRARED LUMINESCENT MATERIAL, PREPARATION METHOD THEREOF, SECURITY ARTICLES FOR ANTI-COUNTERFEIT
Document Type and Number:
WIPO Patent Application WO/2022/255563
Kind Code:
A1
Abstract:
The present invention relates to an infrared-excited infrared light emitting material and a preparation method thereof, and a security article for anti-counterfeit using thereof, and more specifically, relates to a white to pale colored infrared-excited infrared light emitting material, a preparation method thereof, and an ink composition for anti-counterfeit containing the infrared-excited infrared light emitting material which visually appears white or colored, and is excited in the infrared region, emits light in the infrared region, but does not emit light in the visible region, and a security article requiring confirmation of authenticity and anti-counterfeit.
Inventors:
LEE SANG GEUN (KR)
KIM SHI SURK (KR)
KIM SI BO (KR)
LIM WOO SUNG (KR)
KIM SHI SURK (KR)
KIM SI BO (KR)
LIM WOO SUNG (KR)
Application Number:
PCT/KR2021/015358
Publication Date:
December 08, 2022
Filing Date:
October 28, 2021
Export Citation:
Assignee:
NANO CMS CO LTD (KR)
International Classes:
C09K11/08; C09D11/50; C09K11/77
Foreign References:
| KR20120095004A | 2012-08-28 | |||
| CN105038409A | 2015-11-11 | |||
| KR20140145836A | 2014-12-24 |
Other References:
BUISSETTE V., HUIGNARD A., GACOIN T., BOILOT J.-P., ASCHEHOUG P., VIANA B.: "Luminescence properties of YVO4:Ln (Ln=Nd, Yb, and Yb–Er) nanoparticles", SURFACE SCIENCE, NORTH-HOLLAND, AMSTERDAM, NL, vol. 532-535, 1 June 2003 (2003-06-01), AMSTERDAM, NL , pages 444 - 449, XP093009936, ISSN: 0039-6028, DOI: 10.1016/S0039-6028(03)00203-6
BISWAS, A. MACIEL, G.S. FRIEND, C.S. PRASAD, P.N.: "Upconversion properties of a transparent Er3+-Yb3+ co-doped LaF3-SiO2 glass-ceramics prepared by sol-gel method", JOURNAL OF NON-CRYSTALLINE SOLIDS, NORTH-HOLLAND PHYSICS PUBLISHING. AMSTERDAM., NL, vol. 316, no. 2-3, 1 February 2003 (2003-02-01), NL , pages 393 - 397, XP004402061, ISSN: 0022-3093, DOI: 10.1016/S0022-3093(02)01951-8
BISWAS, A. MACIEL, G.S. FRIEND, C.S. PRASAD, P.N.: "Upconversion properties of a transparent Er3+-Yb3+ co-doped LaF3-SiO2 glass-ceramics prepared by sol-gel method", JOURNAL OF NON-CRYSTALLINE SOLIDS, NORTH-HOLLAND PHYSICS PUBLISHING. AMSTERDAM., NL, vol. 316, no. 2-3, 1 February 2003 (2003-02-01), NL , pages 393 - 397, XP004402061, ISSN: 0022-3093, DOI: 10.1016/S0022-3093(02)01951-8
Attorney, Agent or Firm:
JIN, Cheon Woong et al. (KR)
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