Preparation method of phosphate luminescent material with adjustable luminescent color and luminescent material prepared by the method

A technology of luminescent colors and luminescent materials, applied in luminescent materials, chemical instruments and methods, sustainable buildings, etc., can solve problems such as differences in thermal stability of phosphors, and achieve the effect of simple method, easy operation and good material performance

Active Publication Date: 2021-11-02
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strong self-absorption phenomenon between different phosphors and the thermal stability difference among phosphors are two unavoidable and challenging issues for multi-phosphor conversion WLEDs.

Method used

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  • Preparation method of phosphate luminescent material with adjustable luminescent color and luminescent material prepared by the method
  • Preparation method of phosphate luminescent material with adjustable luminescent color and luminescent material prepared by the method
  • Preparation method of phosphate luminescent material with adjustable luminescent color and luminescent material prepared by the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1: x=2%, CMNP(sol)@2%CENP fluorescent material of yellow light emission

[0056] (1) Synthesis of 1mmol CMNP(sol)

[0057] 2.1253gCa(NO 3 ) 2 • 4H 2 O, 0.0850gNaNO 3 , 0.2451gMn(CH 3 COO) 2 • 4H 2 O was dissolved in deionized water, added 4.6231g of citric acid monohydrate, and stirred to dissolve.

[0058] Add 0.8052 g (NH 4 )H 2 PO 4 , join HNO 3 Adjust the pH value to 3, add deionized water until the total volume of the solution is 50ml, add 5g of PEG, and stir for 2 hours to form a uniform wet sol.

[0059] at 80 o C in a water bath and heated until the xerogel is formed; finally, the xerogel was heated at 500 o The CMNP precursor (CMNP(sol)) was obtained after calcination in C air atmosphere for 4 hours.

[0060] (2) Preparation of CMNP(sol)@2%CENP samples

[0061] 0.0425gCa(NO 3 ) 2 • 4H 2 O, 0.0017gNaNO 3 , 2 mlEu(NO 3 ) 3 The solution (concentration: 0.01mol / L) was dissolved in deionized water, 0.0925g of citric acid monohydrate w...

Embodiment 2

[0064] Example 2: x=5%, CMNP(sol)@5%CENP fluorescent material emitting white light

[0065] (1) Synthesis of 1mmol CMNP(sol)

[0066] 2.1253gCa(NO 3 ) 2 • 4H 2 O, 0.0850gNaNO 3 , 0.2451gMn(CH 3 COO) 2 • 4H 2 O was dissolved in deionized water, added 4.6231g of citric acid monohydrate, and stirred to dissolve.

[0067] Add 0.8052 g (NH 4 )H 2 PO 4 , join HNO 3 Adjust the pH value to 3, add deionized water until the total volume of the solution is 50ml, add 5g of PEG, and stir for 2 hours to form a uniform wet sol.

[0068] at 80 o C water bath heated to xerogel formation; xerogel at 500 o The CMNP precursor (CMNP(sol)) was obtained after calcination in C air atmosphere for 4 hours.

[0069] (2) Preparation of CMNP(sol)@5%CENP samples

[0070] 0.1063gCa(NO 3 ) 2 • 4H 2 O, 0.0042gNaNO 3 , 5mlEu(NO 3 ) 3 The solution (concentration: 0.01mol / L) was dissolved in deionized water, 0.2312g of citric acid monohydrate was added, and stirred to dissolve.

[0071] Add...

Embodiment 3

[0073] Example 3: x=20%, CMNP(sol)@20%CENP fluorescent material emitting green light

[0074] (1) Synthesis of 1mmol CMNP(sol)

[0075] 2.1253gCa(NO 3 ) 2 • 4H 2 O, 0.0850gNaNO 3 , 0.2451gMn(CH 3 COO) 2 • 4H 2 O was dissolved in deionized water, added 4.6231g of citric acid monohydrate, and stirred to dissolve.

[0076] Add 0.8052 g (NH 4 )H 2 PO 4 , join HNO 3 Adjust the pH value to 3, add deionized water until the total volume of the solution is 50ml, add 5g of PEG, and stir for 2 hours to form a uniform wet sol.

[0077] at 80 o C water bath heated to xerogel formation; xerogel at 500 o The CMNP precursor (CMNP(sol)) was obtained after calcination in C air atmosphere for 4 hours.

[0078] (2) Preparation of CMNP(ol)@20%CENP samples

[0079] 0.4251Ca(NO 3 ) 2 • 4H 2 O, 0.0170gNaNO 3 , 20ml Eu(NO 3 ) 3 The solution (concentration: 0.01mol / L) was dissolved in deionized water, 0.9246g of citric acid monohydrate was added, and stirred to dissolve.

[0080] Ad...

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Abstract

The invention discloses a β-Ca with adjustable emission color 3 (PO 4 ) 2 The invention discloses a method for preparing a type phosphate luminescent material and the luminescent material prepared by the method, belonging to the technical field of luminescent materials. The present invention adopts two-step sol-gel method, the first step sol-gel method prepares CMNP precursor, the second step sol-gel method prepares Ca 9 EuNa(PO 4 ) 7 Wet sol; the Ca 9 MnNa(PO 4 ) 7 The CMNP precursor obtained after the xerogel was calcined at low temperature was dispersed in Ca 9 EuNa(PO 4 ) 7 In the wet sol, after obtaining a homogeneous mixture, it is heated to form a mixed xerogel, and is finally calcined to obtain a phosphate luminescent material. From the perspective of synthesis, the present invention adopts a two-step sol-gel synthesis strategy to regulate the luminescent properties of CMNP materials, and realizes the regulation of materials from red light to yellow light to white light to green light. The method is simple and easy to operate, and the obtained materials have good properties.

Description

[0001] technical field [0002] The invention relates to the technical field of luminescent materials, in particular to a β-Ca with adjustable luminous color 3 (PO 4 ) 2 A method for preparing a type phosphate luminescent material and a luminescent material prepared by the method. Background technique [0003] Electricity lights up the world, but with the accelerated development of the digital age, global electricity consumption is increasing year by year. In the context of global energy saving and emission reduction, phosphor-converted white light-emitting diodes (pc-WLEDs) are receiving more and more attention in the fields of backlight display, general lighting, and architectural decoration due to their advantages of energy saving, pollution-free, and long life. research and attention. [0004] In the field of full-spectrum lighting and full-color display, it is usually necessary to combine ultraviolet (UV) or blue LED chips with various phosphors to obtain spectral emi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/71C09K11/81C09K11/02
CPCC09K11/02C09K11/71C09K11/7738Y02B20/00
Inventor 尚蒙蒙黄帅王金迪
Owner SHANDONG UNIV
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