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Praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material, and preparation method and application thereof

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

Inactive Publication Date: 2014-02-12
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the up-conversion luminescent material of praseodymium-holmium co-doped lanthanum fluoride that can be excited by long-wave radiation such as infrared and red-green light to emit blue light has not been reported yet.

Method used

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  • Praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material, and preparation method and application thereof
  • Praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material, and preparation method and application thereof
  • Praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material, and preparation method and application thereof

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preparation example Construction

[0028] The preparation method of the above-mentioned praseodymium-holmium co-doped lanthanum fluoride up-conversion luminescent material comprises the following steps;

[0029] Step S101, according to LaF 3 :xPr 3+ ,yHo 3+ The stoichiometric ratio of each element is weighed as LaF 3 , PrF 3 and HoF 3 Powder, wherein, x is 0.002~0.06, and y is 0.002~0.04.

[0030] Preferably, x is 0.03 and y is 0.01.

[0031] It can be understood that in this step, LaF can also be weighed according to the molar ratio (0.9~0.996): (0.002~0.06): (0.002~0.04) 3 , PrF 3 and HoF 3 Powder.

[0032] Step S102 , dissolving the weighed powder in hydrofluoric acid to prepare a solution with a metal cation concentration of 0.5 mol / L-3 mol / L.

[0033] The metal cation in the solution is La 3+ , Pr 3+ and Ho 3+ .

[0034] In this embodiment, the concentration of metal cations is 0.5 mol / L-3 mol / L.

[0035] Preferably, the step of dissolving the weighed powder in hydrofluoric acid to prepare a...

Embodiment 1

[0050] Weigh LaF 3 , PrF 3 and HoF 3 Powder, LaF 3 , PrF 3 and HoF 3 The molar ratio of each component of the powder is 0.96:0.03:0.01, 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 feed 5 L / min of argon gas into the atomization device. The solution precursor enters a 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 along with the airflow, and is finally collected by the microporous acid-resistant filter funnel. Collect the precursor of the phosphor powder, place it in a temperature-programmed furnace and calcinate for 3 hours at a calcining temperature of 1100°C to obtain LaF 3 : 0.03Pr 3+ , 0.01Ho 3+ Up-converting phosphors.

[0051] see image 3 , image 3 The middle curve 1 ...

Embodiment 2

[0054] Weigh LaF 3 , PrF 3 and HoF 3 Powder, LaF 3 , PrF 3 and HoF 3 The molar ratio of each component of the powder is 0.9:0.06:0.04 respectively, 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 feed 15 L / min argon gas into the atomization device. The solution precursor enters a 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 along with the airflow, and is finally collected by the microporous acid-resistant filter funnel. Collect the precursor of the phosphor powder, place it in a temperature-programmed furnace and calcinate it for 5 hours, and the calcining temperature is 1300°C to obtain LaF 3 :0.06Pr 3+ , 0.04Ho 3+ Up-converting phosphors.

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Abstract

The invention provides a praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material. The chemical formula of the praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material is LaF3:xPr3+,yHo<3+>, wherein x is 0.002-0.06, and y is 0.002-0.04. The praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material can be excited through long wave radiation to emit blue light. The invention also provides a preparation method of the praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material, and an application of the praseodymium-holmium-codoped lanthanum fluoride up-conversion luminescence material.

Description

technical field [0001] The invention relates to a praseodymium-holmium co-doped lanthanum fluoride up-conversion luminescent material, a preparation method thereof and an organic light-emitting diode using the praseodymium-holmium co-doped lanthanum fluoride up-conversion luminescent material. Background technique [0002] Organic light-emitting diodes (OLEDs) have been widely used due to their simple component structure, cheap production cost, self-luminescence, short response time, and bendability. However, it is difficult to obtain stable and efficient OLED blue light materials, which greatly limits the development of white light OLED devices and light source industries. [0003] Up-conversion fluorescent materials can emit visible light and 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, biomolecu...

Claims

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Application Information

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IPC IPC(8): C09K11/85H01L51/54
Inventor 周明杰王平陈吉星钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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