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Double-peak-emission broadband near-infrared fluorescent powder, preparation method thereof and light-emitting device

A near-infrared and phosphor technology, applied in luminescent materials, chemical instruments and methods, and climate sustainability, can solve problems such as hindering research and weak absorption of blue light, and achieve the effects of simple operation, low cost, and high luminous efficiency

Pending Publication Date: 2022-07-08
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Ni 2+ In MgO and MgGa 2 o 4 The system shows ultra-broadband emission, and the emission is in the spectral range of 1000-1700nm, but its further research is hindered by the weak absorption of blue light.

Method used

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  • Double-peak-emission broadband near-infrared fluorescent powder, preparation method thereof and light-emitting device
  • Double-peak-emission broadband near-infrared fluorescent powder, preparation method thereof and light-emitting device
  • Double-peak-emission broadband near-infrared fluorescent powder, preparation method thereof and light-emitting device

Examples

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Effect test

Embodiment 1

[0051] This embodiment provides a Cr 3+ / Ni 2+ Co-doped broadband near-infrared phosphor materials Its preparation method is as follows: according to the above-mentioned material composition design, the matrix is ​​Mg 2 SnO 4 , doping ion Cr 3+ and Ni 2+ The doping amount is 0.5mol%, accurately weigh magnesium oxide (MgO), tin dioxide (SnO) 2 ), nickel oxide (NiO) and chromium oxide (Cr 2 O 3 ), according to the stoichiometric ratio of each constituent element, weigh the above compound raw materials respectively, so that the molar ratio of each metal element is Mg:Sn:Cr:Ni=1.99:1:0.005:0.005.

[0052] The above raw materials were placed in an agate mortar and then added with a small amount of ethanol (raw material 1g, ethanol 3mL) and ground for about 1 hour, the raw materials were fully mixed and then moved to a corundum crucible, covered and placed in a high temperature reaction furnace at 1600 ℃ high temperature burning 2 hours, then naturally cooled to room temp...

Embodiment 2

[0054] This embodiment provides a Cr 3+ / Ni 2+ Doped Broadband Near Infrared Phosphor Materials Its preparation method is as follows: according to the above-mentioned material composition design, the matrix is ​​Mg 2 SnO 4 , doping ion Cr 3+ and Ni 2+ The doping amounts of MgO were 1 mol% and 0.5 mol%, respectively, and accurately weighed magnesium oxide (MgO), tin dioxide (SnO) 2 ), nickel oxide (NiO) and chromium oxide (Cr 2 O 3 ), according to the stoichiometric ratio of each constituent element, weigh the above compound raw materials respectively, so that the molar ratio of each metal element is Mg:Sn:Cr:Ni=1.985:1:0.01:0.005.

[0055] Put the above raw materials in an agate mortar and then add a small amount of ethanol (raw material 1g, ethanol 3mL) and grind for about 1 hour, make the raw materials fully mixed, and then move it to a corundum crucible, cover and place it in a high temperature reaction furnace and burn it at a high temperature of 1500 ℃ for 15 mi...

Embodiment 3

[0057] This embodiment provides a Cr 3+ / Ni 2+ Doped Broadband Near Infrared Phosphor Materials Its preparation method is as follows: according to the above-mentioned material composition design, the matrix is ​​Mg 2 SnO 4 , doping ion Cr 3+ and Ni 2+ The doping amounts of MgO were 0.5 mol% and 1 mol%, respectively, and accurately weighed magnesium oxide (MgO), tin dioxide (SnO 2 ), nickel oxide (NiO) and chromium oxide (Cr 2 O 3 ), according to the stoichiometric ratio of each constituent element, weigh the above compound raw materials respectively, so that the molar ratio of each metal element is Mg:Sn:Cr:Ni=1.985:1:0.005:0.01.

[0058] Put the above raw materials in an agate mortar and then add a small amount of ethanol (raw material 1g, ethanol 3mL) and grind for about 1 hour, make the raw materials fully mixed, and then move it to a corundum crucible, cover and place it in a high temperature reaction furnace and burn it at a high temperature of 1500 ℃ for 5 hou...

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Abstract

The invention relates to double-peak-emission broadband near-infrared fluorescent powder, a preparation method thereof and a light-emitting device. According to the chemical composition of the broadband near-infrared fluorescent powder, the broadband near-infrared fluorescent powder provided by the invention has a wider excitation band, can be effectively excited by a spectral region of 250 nm to 880 nm so as to generate double-peak broadband infrared fluorescence emission at 835 nm and 1480 nm, and can be used as a light conversion material of a blue light LED (Light Emitting Diode) chip, and finally, the preparation of an ultra-broadband near-infrared light-emitting light source device is realized.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a broadband near-infrared fluorescent powder with double peak emission, a preparation method thereof, and a light-emitting device. Background technique [0002] With the characteristics of rapid and non-invasive detection, it has received extensive attention in the fields of food safety, healthy eating, and early diagnosis of cancer. At this stage, tiny NIR light-emitting diode (LED) chips have allowed them to be integrated into wearable devices such as mobile phones. With the help of NIR spectroscopy and imaging technology, heart rate blood pressure monitoring or biometric identification can be realized. However, the research and development of broadband NIR luminescent materials is still in its infancy. At present, one of the main technical bottlenecks in this field is the lack of NIR light sources and corresponding light conversion materials with high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/68H01L33/50
CPCC09K11/684H01L33/502Y02B20/00
Inventor 王静刘伯梅
Owner SUN YAT SEN UNIV
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