Check patentability & draft patents in minutes with Patsnap Eureka AI!

Cr<3+>-doped lithium-magnesium-based germanate ultra-wideband near-infrared luminescent material and preparation method thereof

A lithium-magnesium-based germanate, luminescent material technology, applied in luminescent materials, chemical instruments and methods, etc., can solve the problems of narrow wavelength range of near-infrared luminescent materials, and achieve easy technology promotion and industrialized mass production, easy operation, Simple preparation method

Active Publication Date: 2021-02-05
UNIV OF SCI & TECH BEIJING
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the narrow wavelength range of existing near-infrared luminescent materials, the technical difficulty mainly solved by the present invention is to provide a Cr 3+ Doped lithium-magnesium germanate ultra-broadband near-infrared luminescent material provides a better choice for near-infrared related scientific research and application promotion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cr&lt;3+&gt;-doped lithium-magnesium-based germanate ultra-wideband near-infrared luminescent material and preparation method thereof
  • Cr&lt;3+&gt;-doped lithium-magnesium-based germanate ultra-wideband near-infrared luminescent material and preparation method thereof
  • Cr&lt;3+&gt;-doped lithium-magnesium-based germanate ultra-wideband near-infrared luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The present invention will be described in further detail below in conjunction with the examples, but the embodiments of the present invention are not limited thereto. Embodiment 1: The chemical composition formula of this embodiment is LiMg 2 sc 0.96 Cr 0.04 Ge 2 o 8 The specific preparation method of the broadband near-infrared luminescent material is as follows:

[0030] According to the chemical composition formula LiMg 2 sc 0.96 Cr 0.04 Ge 2 o 8 According to the stoichiometric ratio, weigh Li respectively 2 CO 3 ,MgO,Sc 2 o 3 ,GeO 2 and Cr 2 o 3 , adding 1 wt% H 3 BO 3 Put it in an agate mortar and add an appropriate amount of absolute ethanol to grind for 30 minutes. After it is dry, scrape off the powder attached to the wall of the mortar and dry grind for 30 minutes. Then put it in a high-temperature alumina crucible and put it in a box-type Pre-fire in the furnace, heat up to 900°C at a heating rate of 8°C / min, keep the temperature for 4 hours...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an ultra-wideband near-infrared lithium-magnesium-based germanate luminescent material capable of being simultaneously excited by blue light and red light and a preparation method of the ultra-wideband near-infrared lithium-magnesium-based germanate luminescent material. The crystal structure of the near-infrared luminescent material belongs to an orthorhombic system, the chemical general formula of the near-infrared luminescent material is LiMg2M1-xGe2O8: x% Cr<3+>, x is greater than or equal to 0.01 and less than or equal to 20, and M is one or two of Sc and In. The material disclosed by the invention has three excitation peaks which are respectively positioned at 250 to 360nm, 360 to 560nm and 560 to 900nm, the emission wavelength range of the material is 850 to1400nm, and the emission full width at half maximum is about 300nm. The emission wavelength of the material covers the biooptical first and second windows at the same time. The luminescent material matches a blue-light or red-light LED chip, can be used for manufacturing an ultra-wideband near-infrared light source, and has an important application value in the fields of night vision imaging, agricultural product nondestructive quality analysis, human physiological state non-invasive detection and the like. The luminescent material is simple in preparation process, and easy for industrial production.

Description

technical field [0001] The invention relates to a preparation and application method of a lithium magnesium-based germanate ultra-broadband near-infrared luminescent material, which belongs to the technical field of broadband near-infrared luminescent materials. The near-infrared luminescent material can be applied to night vision imaging and non-destructive quality analysis of agricultural products And non-invasive detection of human physiological state and other fields. Background technique [0002] Near-infrared light is invisible light (780-2526nm) between the visible light region and the mid-infrared light region on the electromagnetic spectrum. The near-infrared light is consistent with the combined frequency of vibrations of hydrogen-containing groups (O-H, N-H, C-H) in organic molecules and the absorption areas of multiple levels of frequency. By scanning the near-infrared spectrum of the sample, it can provide information from the soil conditions in the field to the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C09K11/78C09K11/68C09K11/66
CPCC09K11/681C09K11/7701
Inventor 刘泉林蔡昊刘天瑶宋振
Owner UNIV OF SCI & TECH BEIJING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com