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Thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material and preparation method thereof, and organic light-emitting diode

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

Inactive Publication Date: 2014-10-15
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, thulium-holmium co-doped zirconium fluoride 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-and-holmium-codoped zirconium fluoride up-conversion luminescent material and preparation method thereof, and organic light-emitting diode
  • Thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material and preparation method thereof, and organic light-emitting diode
  • Thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material and preparation method thereof, and organic light-emitting diode

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Experimental program
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preparation example Construction

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

[0029] Step S101, according to ZrF 4 :xTm 3+ ,yHo 3+ The stoichiometric ratio of each element weighs ZrF 4 , Tm 2 o 3 and Ho 2 o 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, ZrF can also be weighed according to the molar ratio (0.996-0.9): (0.001-0.03): (0.001-0.02) 4 , Tm 2 o 3 and Ho 2 o 3 Powder.

[0032] Preferably, ZrF can also be weighed according to the molar ratio of 0.96:0.015:0.005 in this step 4 , Tm 2 o 3 and Ho 2 o 3 Powder.

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

[0034] The metal cation in the solution is Zr 4+ , Tm 3+ , Ho 3+ .

[0035] Preferably, the step of dissolv...

Embodiment 1

[0052] Weigh ZrF 4 , Tm 2 o 3 and Ho 2 o 3 The molar numbers of the powders are respectively 0.96mmol, 0.015mmol, and 0.005mmol, which are dissolved in nitric 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 110°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 ZrF 4 :0.03Tm 3+ , 0.01Ho 3+ Up-converting phosphors.

[0053] The sequentially stacked substrate 1 uses soda-lim...

Embodiment 2

[0058] Weigh ZrF 4 , Tm 2 o 3 and Ho 2 o 3 The molar numbers of the powders are 0.95mmol, 0.03mmol, and 0.02mmol respectively, which are dissolved in nitric 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 1 L / min of 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, place it in a temperature-programmed furnace and calcinate it for 5 hours at a calcining temperature of 1300°C to obtain ZrF 4 :0.06Tm 3+ , 0.04Ho 3+ Up-converting phosphors.

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Abstract

The invention provides a thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material. The general chemical formula of the luminescent material is ZrF4: xTm3+,yHo3+, wherein x is in a range of 0.002 to 0.06, and y is in a range of 0.002 to 0.04. In the photoluminescence spectrum of the thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material, the excitation wavelength of the thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material is 650 nm, and luminescence peaks at 454 nm and 476 nm are respectively formed by transition radiation of Tm3+ ions from 1D2 to 3H4 and from 1G4 to 3H6. The invention further provides a preparation method for the thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material and an organic light-emitting diode using the thulium-and-holmium-codoped zirconium fluoride up-conversion luminescent material.

Description

technical field [0001] The invention relates to a thulium-holmium co-doped zirconium fluoride up-conversion luminescent material, a preparation method and an organic light-emitting diode. 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, biomolecular fluorescent labeling, and infrared radiation detection. However, thulium-holmium co-doped zirconium fl...

Claims

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Application Information

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IPC IPC(8): C09K11/67H01L51/54
Inventor 周明杰王平陈吉星钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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