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Broadband short-wave infrared luminescent material, preparation method and application thereof

An infrared luminescence, broadband short-wave technology, applied in luminescent materials, chemical instruments and methods, semiconductor devices, etc., can solve the problems of short emission wavelength, small emission half-peak width, etc., and achieves simple preparation method, low equipment requirements, and crystalline performance. Good results

Active Publication Date: 2021-09-17
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the problems of short emission wavelength (emission peak less than 1100nm) and small emission half-width of chromium-doped near-infrared luminescent materials in the prior art, the present invention proposes a broadband short-wave infrared luminescent material and its preparation method and application. Short-wave infrared (SWIR) luminescent materials can be efficiently excited by blue light, the main emission area is located in the broadband infrared region of 700-1600nm, the luminous peak is located at ~1350nm, and the best excitation peak is located at ~450nm

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  • Broadband short-wave infrared luminescent material, preparation method and application thereof
  • Broadband short-wave infrared luminescent material, preparation method and application thereof
  • Broadband short-wave infrared luminescent material, preparation method and application thereof

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preparation example Construction

[0039] In the second aspect of the present invention, the present invention provides a method for preparing a broadband short-wave infrared luminescent material, comprising: mixing materials, first evaporating to dryness at a low temperature, and then sintering at a high temperature to obtain a broadband short-wave infrared luminescent material. Further, the materials include Li-containing compounds, Mg-containing compounds, P-containing compounds, Cr-containing compounds, Ni-containing compounds, Na-containing compounds, K-containing compounds, Ca-containing compounds, Sr-containing compounds, and Ba-containing compounds.

[0040] In one or more embodiments of the present invention, the preparation method specifically includes: mixing and dissolving the materials in distilled water, fully stirring, and placing them in an oven at 80-100° C. to evaporate to dryness, grinding the product obtained at low temperature again, and raising the temperature. High temperature sintering is...

Embodiment 1

[0063] According to the following composition: Broadband short-wave infrared light-emitting material LiMgPO 4 : 0.5%Cr 3+ ,0.001%Ni 2+ , with LiMgPO 4 As the host, the doping ions are Cr ions and Ni ions, wherein the doping amount of Cr is 0.5 mol%, and the doping amount of Ni is 0.001 mol%. Accurately weigh lithium nitrate (LiNO 3 ) 0.2108g, magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O) 0.7766g, ammonium dihydrogen phosphate (NH 4 H 2 PO 4 )0.3287g, chromium nitrate (Cr(NO 3 ) 3 ·9H 2 O) 0.0057g, nickel nitrate (Ni(NO) with a concentration of 0.01mol / L 3 ) 2 ) aqueous solution 2.86 μL. The above raw materials were dissolved in a beaker and stirred for about 1 hour to fully mix the raw materials and then moved to an evaporating dish, and dried in an oven at 100° C. for 8 hours. After regrinding, the dried powder was sintered at a high temperature of 1000 °C for 10 hours to obtain LiMgPO excited by blue light. 4 : 0.5%Cr 3+ ,0.001%Ni 2+ Broadband short-wave infrared...

Embodiment 2

[0070] According to the following composition: Broadband short-wave infrared light-emitting material Li 0.8 Na 0.2 MgPO 4 : 0.5%Cr 3+ ,0.001%Ni 2+ , with Li 0.8 Na 0.2 MgPO 4 As the host, the doping ions are Cr ions and Ni ions, wherein the doping amount of Cr is 0.5 mol%, and the doping amount of Ni is 0.001 mol%. Accurately weigh lithium nitrate (LiNO 3 ) 0.1686g, sodium nitrate (NaNO 3 ) 0.0520g, magnesium nitrate (Mg(NO 3 ) 2 ·6H 2 O) 0.7766g, ammonium dihydrogen phosphate (NH 4 H 2 PO 4 )0.3287g, chromium nitrate (Cr(NO 3 ) 3 ·9H 2 O) 0.0057g, nickel nitrate (Ni(NO) with a concentration of 0.01mol / L 3 ) 2 ) aqueous solution 2.86 μL. The above raw materials were dissolved in a beaker and stirred for about 1 hour to fully mix the raw materials and then moved to an evaporating dish, and dried in an oven at 100° C. for 8 hours. After regrinding, the dried powder was sintered at a high temperature of 1000 °C for 10 hours to obtain Li excited by blue light. ...

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Abstract

The invention belongs to the technical field of short-wave infrared luminescent materials, and relates to a broadband short-wave infrared luminescent material, a preparation method and application thereof. The broadband short-wave infrared light-emitting material comprises Li1-zAzMg1-x-y-cBcPO4:xCr<3+>,yNi<2+>, wherein x is more than or equal to 0 and less than or equal to 10%, y is more than 0 and less than or equal to 0.1%, x and y are respectively molar percentages of Cr and Ni in (LiA)(MgB)PO4, z is more than or equal to 0 and less than 1, A<+> is one or more of Na<+> and K<+>, c is more than or equal to 0 and less than 1, and B<2+> is one or more of Ca<2+>, Sr<2+> and Ba<2+>. The luminescent material provided by the invention can effectively absorb visible light and near-infrared light of 350-800 nm, generates short-wave infrared light with the main peak wavelength near 1350 nm for emission, and can be packaged with a blue light chip to form a short-wave infrared LED device. The preparation method is simple in process, low in manufacturing cost and free of environmental pollution, and the product has the advantages of being high in purity, good in uniformity and the like and can be widely applied to the technical field of short-wave infrared light. The blue-light-excited broadband short-wave infrared luminescent material has a good application prospect in the fields of night vision, optical anti-counterfeiting, biomedicine, short-wave infrared spectroscopy technology and the like.

Description

technical field [0001] The invention belongs to the technical field of short-wave infrared light-emitting materials, and relates to a broadband short-wave infrared light-emitting material and a preparation method and application thereof. Background technique [0002] The information disclosed in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] Short-wave infrared (SWIR, wavelength range 900–1700 nm) spectroscopy is emerging as a fast, convenient, non-invasive, and non-destructive analytical technique that exhibits excellent spectral properties, including invisible to the naked eye, high levels in haze, smoke, and dust. Because of its penetrating ability, low light scattering and absorption in biological tissues, SWIR spectroscopy...

Claims

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Application Information

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IPC IPC(8): C09K11/70C09K11/71H01L33/50
CPCC09K11/70C09K11/71H01L33/502
Inventor 梁延杰苗世海
Owner SHANDONG UNIV
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