Title:
NEAR-INFRARED LIGHT-EMITTING SUBSTANCE AND LIGHT-EMITTING DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2022/252400
Kind Code:
A1
Abstract:
The present application discloses a near-infrared light-emitting substance and a light-emitting device comprising same. The near-infrared light-emitting substance comprises an inorganic compound having a chemical formula of AxDyEzMa; an element A comprises one or two of La, Gd, Y, and Tb, and necessarily comprises the element La; an element D comprises one or two of Lu, Sc, Ga, and Al, and necessarily comprises the element Lu; an element E comprises an element O or elements O and F; an element M comprises one or more of Cr, Ce, Eu, Yb, Nd, and Er, and necessarily comprises the element Cr; and the parameters x, y, z, and a meet the following conditions: 0.8≤x≤1.2; 0.8≤y≤1.2; 2.8≤z≤3.2; and 0.001≤a≤0.3. The light-emitting substance has a perovskite orthorhombic system structure which is the same as that of LaLuO3. Under excitation of ultraviolet light, purple light, blue light, and red light, the light-emitting material can generate efficient wide-spectrum emission having a peak wavelength of 780-1,000 nm or efficient narrow-band near-infrared light emission having a peak wavelength greater than 1,000 nm. The present invention has a great application prospect in the fields of food testing, security monitoring, standard light sources, healthy illumination, etc.
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Inventors:
LIU RONGHUI (CN)
SUN ZHICONG (CN)
LIU YUANHONG (CN)
CHEN XIAOXIA (CN)
GAO TONGYU (CN)
MA XIAOLE (CN)
XUE YUAN (CN)
SUN ZHICONG (CN)
LIU YUANHONG (CN)
CHEN XIAOXIA (CN)
GAO TONGYU (CN)
MA XIAOLE (CN)
XUE YUAN (CN)
Application Number:
PCT/CN2021/112373
Publication Date:
December 08, 2022
Filing Date:
August 13, 2021
Export Citation:
Assignee:
GRIREM ADVANCED MAT CO LTD (CN)
GRIREM HI TECH CO LTD (CN)
RARE EARTH FUNCTIONAL MAT XIONG AN INNOVATION CENTER CO LTD (CN)
GRIREM HI TECH CO LTD (CN)
RARE EARTH FUNCTIONAL MAT XIONG AN INNOVATION CENTER CO LTD (CN)
International Classes:
C09K11/78; H01L33/00
Foreign References:
| CN110857388A | 2020-03-03 | |||
| CN102241980A | 2011-11-16 | |||
| US20040056990A1 | 2004-03-25 |
Other References:
ELZBIECIAK-PIECKA K.; SUTA M.; MARCINIAK L.: "Structurally induced tuning of the relative sensitivity of LaScO3:Cr3+ luminescent thermometers by co-doping lanthanide ions", CHEMICAL ENGENEERING JOURNAL, ELSEVIER, AMSTERDAM, NL, vol. 421, 20 April 2021 (2021-04-20), AMSTERDAM, NL , XP086628560, ISSN: 1385-8947, DOI: 10.1016/j.cej.2021.129757
Attorney, Agent or Firm:
CNCLOUD INTELLECTUAL PROPERTY LAW FIRM (CN)
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