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Near-infrared light-emitting material and light-emitting device comprising light-emitting material

A technology of light-emitting materials and light-emitting devices, applied in the directions of light-emitting materials, electrical components, circuits, etc., can solve the problems of low light-emitting efficiency and poor stability, and achieve the effects of high light-emitting efficiency, low cost and simple preparation process.

Active Publication Date: 2019-08-23
GRIREM ADVANCED MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide a luminescent material capable of emitting highly efficient near-infrared light (900-1100nm) and a luminescent device containing it under the excitation of blue light, near-ultraviolet light and red light, to solve Solve the problems of poor stability and low luminous efficiency of existing near-infrared luminescent materials and light-emitting devices

Method used

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  • Near-infrared light-emitting material and light-emitting device comprising light-emitting material
  • Near-infrared light-emitting material and light-emitting device comprising light-emitting material
  • Near-infrared light-emitting material and light-emitting device comprising light-emitting material

Examples

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Embodiment 1

[0035] A near-infrared luminescent material whose chemical formula is Ca 0.4 Sr 0.595 AlSiN 3.002 Cr 0.001 Eu 0.004 Yb 0.001 , according to its stoichiometric ratio, accurately weigh Ca 3 N 2 (99.9%), AlN (99.9%), Si 3 N 4 (99.9%), CrO 2 (99.99%), Yb 2 o 3 (99.99%), Sr 2 N (99.9%), EuN (99.9%) raw material. A total of 100 g of the above raw materials were placed in a mortar and mixed evenly in a glove box (oxygen content < 1 ppm, water content < 1 ppm). The mortar was made of agate or alumina ceramics. Put the mixed powder into the crucible, compact it lightly, then take it out from the glove box and place it in a high-temperature atmosphere furnace. The high-temperature atmosphere furnace starts to heat up after being vacuumed and filled with nitrogen, and the heating rate is 10°C / min. , nitrogen pressure is 3MPa. Heat up to 1900°C and keep warm for 20 hours. After the keep warm, turn off the power and cool down with the furnace. Take out the fired sample, grin...

Embodiment 2

[0037] A near-infrared luminescent material whose chemical formula is Ca 0.95 AlSiN 3.02 Cr 0.01 Yb 0.04 , according to its stoichiometric ratio, accurately weigh Ca 3 N 2 (99.9%), AlN (99.9%), Si 3 N 4 (99.9%), CrO 2 (99.99%), Yb 2 o 3 (99.99%) Raw. A total of 100 g of the above raw materials were placed in a mortar and mixed evenly in a glove box (oxygen content < 1 ppm, water content < 1 ppm). The mortar was made of agate or alumina ceramics. Put the mixed powder into the crucible, compact it lightly, then take it out from the glove box and place it in a high-temperature atmosphere furnace. The high-temperature atmosphere furnace starts to heat up after being vacuumed and filled with nitrogen, and the heating rate is 10°C / min. , nitrogen pressure is 5MPa. Heat up to 1900°C and keep warm for 15 hours. After the keep warm, turn off the power and cool down with the furnace. Take out the fired sample, grind, grind, remove impurities, wash, sieve, and dry to obtain t...

Embodiment 3

[0039] A near-infrared luminescent material whose chemical formula is Ca 0.995 AlSiN 3.003 Cr 0.005 , according to its stoichiometric ratio, accurately weigh Ca 3 N 2 (99.9%), AlN (99.9%), Si 3 N 4 (99.9%), CrO 2 (99.99%) Raw. A total of 100 g of the above raw materials were placed in a mortar and mixed evenly in a glove box (oxygen content < 1 ppm, water content < 1 ppm). The mortar was made of agate or alumina ceramics. Put the mixed powder into the crucible, compact it lightly, then take it out from the glove box and place it in a high-temperature atmosphere furnace. The high-temperature atmosphere furnace starts to heat up after being vacuumed and filled with nitrogen, and the heating rate is 10°C / min. , nitrogen pressure is 2MPa. Heat up to 1910°C and keep warm for 20 hours. After the keep warm, turn off the power and cool down with the furnace. Take out the fired sample, grind, grind, remove impurities, wash, sieve, and dry to obtain the final sample, then measu...

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Abstract

A near-infrared light-emitting material and a light-emitting device comprising the light-emitting material are disclosed. The light-emitting material comprises an inorganic compound of the formula QqRrAltSiuNv, wherein Q is selected from one or more of Cr, Eu, Yb and Nd, and must contain the Cr element, R is one or two of Ca, Sr, Ba, and Mg, and 0 < q <= 0.1, 0.8 <= q + r <= 1.2, 0.8 <= t <= 1.2,0.8 <= u <= 1.2, and 2.4 <= v <= 3.6. The inorganic compound has the same crystal structure as CaAlSiN3. The near-infrared light-emitting material can be efficiently emitted in a near-infrared region,and is an ideal near-infrared light-emitting material. The light-emitting device containing the light-emitting material can be widely applied to the fields of near-infrared short-wave detection, medical treatment, and the like.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and in particular relates to a near-infrared luminescent material and a luminescent device containing the same. Background technique [0002] Near-infrared light (NIR) is an electromagnetic wave with a wavelength ranging from 700 to 2500nm. It is the earliest non-visible light region discovered by people. Long and short, it is not absorbed by glass or quartz media, and can be used in a wide range of fields such as non-destructive removal of biological tissue, astronomical measurement, and optical fiber communication. Therefore, there are more and more research reports on the application of near-infrared technology. The near-infrared luminescence of rare earth ions (4f) has the characteristics of high intensity, narrow line width, long life, and small background. It has special advantages in optical signal amplification, laser systems, and fluorescence immunoassays. The material is incomparab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64C09K11/59H01L33/50
CPCC09K11/7734C09K11/0883H01L33/502
Inventor 刘荣辉刘元红江泽高慰李彦峰崔磊
Owner GRIREM ADVANCED MATERIALS CO LTD
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