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Dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material, and preparation method and application thereof

A technology of luminescent materials and co-doping, which is applied in the fields of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2015-02-11
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, dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent materials, which can be excited by long-wave radiation such as infrared and red and green light, have not been reported yet.

Method used

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  • Dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material, and preparation method and application thereof
  • Dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material, and preparation method and application thereof
  • Dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material, and preparation method and application thereof

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preparation example Construction

[0029] The preparation method of the above dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material comprises the following steps;

[0030] Step S101, according to RYF 4 :xDy 3+ ,yYb 3+ The stoichiometric ratio of each element is called R 2 CO 3 , Y 2 o 3 , Dy 2 o 3 and Yb 2 o 3 Powder, wherein x is 0.01-0.06, y is 0.01-0.04, and R is at least one of lithium, sodium, potassium, rubidium and cesium.

[0031] Preferably, x is 0.03 and y is 0.02.

[0032] It can be understood that in this step, the R 2 CO 3 , Y 2 o 3 , Dy 2 o 3 and Yb 2 o 3 Powder.

[0033] Preferably, in this step, R can also be weighed according to the molar ratio of 1:0.95:0.03:0.02 2 CO 3 , Y 2 o 3 , Dy 2 o 3 and Yb 2 o 3 Powder.

[0034] 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.

[0035] The metal cation in the solution is R + , Y 3+ , Dy ...

Embodiment 1

[0051] Weigh Li 2 CO 3 , Y 2 o 3 , Dy 2 o 3 and Yb 2 o 3 The molar ratio of the powder is 1:0.95:0.03:0.02, 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, place it in a temperature-programmed furnace and calcinate it for 3 hours at a calcining temperature of 1100°C to obtain LiYF 4 : 0.03Dy 3+ ,0.02Yb 3+ Up-converting phosphors.

[0052] see image 3 , image 3 The middle curve 1 is the photoluminescence spect...

Embodiment 2

[0057] Weigh Li 2 CO 3 , Y 2 o 3 , Dy 2 o 3 and Yb 2 o 3 The molar ratio is 1:0.98:0.01:0.01, 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 argon carrier gas at a temperature of 220° C. to generate a precursor, wherein the diameter of the quartz tube is 150 mm and the length is 3 m. 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 for 5 hours at a calcining temperature of 1300°C to obtain LiYF 4 : 0.01Dy 3+ ,0.01Yb 3+ Up-converting phosphors.

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Abstract

The invention relates to a dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material with a chemical formula of RYF4:xDy<3+>,yYb<3+>, wherein x is 0.01-0.06, y is 0.01-0.04, and R is at least one selected from lithium element, sodium elemental, potassium element, rubidium element and caesium element. The dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material excitation wavelength is 796nm; and a 482nm light emission peak is corresponding to light emission peak formed by Dy<3+> ion <4>F9 / 2 to <6>F15 / 2 transition radiation, such that blue-light short-wave luminescence excited by long-wave radiation of infrared to green light is realized. The invention also provides a preparation method and an application of the dysprosium and ytterbium co-doped alkali yttrium fluoride glass up-conversion luminescent material.

Description

technical field [0001] The invention relates to an up-conversion luminescent material of dysprosium and ytterbium co-doped alkali yttrium fluoride glass, a preparation method thereof and an organic light emitting diode using the up-conversion luminescent material of dysprosium and ytterbium co-doped alkali yttrium fluoride glass. 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,...

Claims

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Application Information

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