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Thulium- holmium- co-doped IIIA-group yttrium fluosilicate up-conversion luminescent materials, and preparing method and applications thereof

A luminescent material, co-doping technology, applied in luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2015-05-27
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, thulium-holmium co-doped group III yttrium fluorosilicate up-conversion luminescent materials that can be excited by long-wave radiation such as infrared and red-green light to emit blue light have not been reported yet.

Method used

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  • Thulium- holmium- co-doped IIIA-group yttrium fluosilicate up-conversion luminescent materials, and preparing method and applications thereof
  • Thulium- holmium- co-doped IIIA-group yttrium fluosilicate up-conversion luminescent materials, and preparing method and applications thereof
  • Thulium- holmium- co-doped IIIA-group yttrium fluosilicate up-conversion luminescent materials, and preparing method and applications thereof

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preparation example Construction

[0028] The above-mentioned thulium-holmium co-doped tri-group yttrium fluorosilicate upconversion luminescent material preparation method, including the following steps;

[0029] Step S101, follow MeYSiF 10 : XTm 3+ , YHo 3+ The stoichiometric ratio of each element is called Me 2 O 3 , Y 2 O 3 , SiO, Tm 2 O 3 And Ho 2 O 3 Powder, wherein x is 0.01-0.08, y is 0-0.06, Me is gallium element, at least one of indium element and thallium element.

[0030] Preferably, x is 0.04 and y is 0.03.

[0031] It can be understood that in this step, Me can also be weighed according to the molar ratio of 1:1:2: (0.01~0.08): (0~0.06) 2 O 3 , Y 2 O 3 , SiO, Tm 2 O 3 And Ho 2 O 3 Powder.

[0032] Preferably, Me can also be weighed according to the molar ratio of 1:1:2:0.03:0.04 in this step 2 O 3 , Y 2 O 3 , SiO, Tm 2 O 3 And Ho 2 O 3 Powder.

[0033] Step S102, dissolving the weighed powder in hydrofluoric acid to prepare a solution with a metal cation concentration of 0.5 mol / L to 3 mol / L.

[0034] The me...

Embodiment 1

[0050] Weigh Ga 2 O 3 , Y 2 O 3 , SiO, Tm 2 O 3 And Ho 2 O 3 The number of moles of the powder is 0.5mmol, 0.5mmol, 1mmol, 0.04mmol and 0.03mmol, dissolved in hydrofluoric acid to prepare a 1.5mol / L solution, and 0.01mol / L polyethylene glycol additive is added. Then put the solution into the atomization device, and then pass 5L / min of argon into the atomization device. The solution precursor enters the quartz tube with a temperature of 180°C along with the argon carrier gas to generate the precursor, wherein the diameter of the quartz tube is 95mm and the length is 1.4m. Then the phosphor enters the condenser with the airflow, and is finally collected by the microporous acid-resistant filter funnel. The precursor of the phosphor is collected and calcined in a programmed temperature furnace for 3 hours at a calcining temperature of 1100°C to obtain GaYSiF 10 : 0.04Tm 3+ , 0.03Ho 3+ Up-conversion phosphor.

[0051] See image 3 , image 3 The middle curve 2 is the photoluminescenc...

Embodiment 2

[0054] Weigh Ga 2 O 3 , Y 2 O 3 , SiO, Tm 2 O 3 And Ho 2 O 3 The number of moles of the powder is 0.5mmol, 0.5mmol, 1mmol, 0.01mmol and 0.01mmol, dissolved in hydrofluoric acid to prepare a 3mol / L solution, and 0.05mol / L polyethylene glycol additive is added. Then put the solution into the atomization device, and then pass 15L / min of argon into the atomization device. The solution precursor enters the quartz tube with a temperature of 220°C along with the argon carrier gas to generate the precursor, wherein the diameter of the quartz tube is 150mm and the length is 3m. Then the phosphor enters the condenser with the airflow, and is finally collected by the microporous acid-resistant filter funnel. The precursor of the phosphor is collected and calcined in a programmed temperature control furnace for 5 hours at a calcining temperature of 1300°C to obtain GaYSiF 10 :0.01Tm 3+ , 0.01Ho 3+ Up-conversion phosphor.

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Abstract

Thulium- holmium- co-doped IIIA-group yttrium fluosilicate up-conversion luminescent materials are provided. The general chemical formula of the materials is MeYSiF10:xTm<3+>,yHo<3+>, wherein the x is 0.01-0.08, the y is 0-0.06, and the Me is at least one of gallium, indium and thallium. The excitation wave length of one of the materials is 650 nm, and obtained luminescence peaks at 454 nm and 476 nm are respectively formed by transition radiation from the 1D2 to the 3H4 and transition radiation from the 1G4 to the 3H6 of the Tm<3+>. Blue-light short-wave luminescence from radiation excitation of long waves from infrared to green rays is achieved. A preparing method and applications of the materials are also provided.

Description

Technical field [0001] The invention relates to a thulium-holmium co-doped tri-group yttrium fluorosilicate upconversion luminescent material, a preparation method thereof and an organic light-emitting diode using the thulium-holmium co-doped tri-group yttrium fluorosilicate upconversion luminescent material. Background technique [0002] Organic light-emitting diodes (OLEDs) have been widely used due to their simple component structure, low production cost, self-luminescence, short reaction time, and flexibility. However, it is difficult to obtain stable and efficient OLED blue light materials, which greatly restricts the development of white light OLED devices and light source industries. [0003] Up-conversion fluorescent materials can emit visible light or even ultraviolet light under the excitation of long-wave (such as infrared) radiation, and have broad application prospects in the fields of optical fiber communication technology, fiber amplifier, three-dimensional display, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85H01L51/54
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD