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Dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material, and preparation method and application thereof

A technology of titanium dioxide and luminescent materials, used 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, dysprosium-holmium co-doped titania upconversion luminescent materials that can be excited by long-wave radiation such as infrared, red and green light to emit blue light have not been reported yet.

Method used

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  • Dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material, and preparation method and application thereof
  • Dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material, and preparation method and application thereof
  • Dysprosium-holmium-codoped titanium dioxide 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 dysprosium-holmium co-doped titanium dioxide up-conversion luminescent material comprises the following steps;

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

[0032] Preferably, in this step, TiO can also be weighed according to the molar ratio of 0.96:0.015:0.005 2 , Dy 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 Ti 4+ , Dy 3+ and Ho 3+ .

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

Embodiment 1

[0050] Weigh TiO 2 , Dy 2 o 3 and Ho 2 o 3 Powder, TiO 2 , Dy 2 o 3 and Ho 2 o 3 The molar ratio of the powder is 0.98:0.015:0.005, 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 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 it for 3 hours, and the calcining temperature is 1100°C to obtain TiO 2 : 0.03Dy 3+ , 0.01Ho 3+ Up-converting phosphors.

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

Embodiment 2

[0054] Weigh TiO 2 , Dy 2 o 3 and Ho 2 o 3 Powder, TiO 2 , Dy 2 o 3 and Ho 2 o 3 The molar ratio of the powder is 0.9:0.03:0.02, 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 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 TiO 2 : 0.06Dy 3+ , 0.04Ho 3+ Up-converting phosphors.

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Abstract

The invention provides a dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material. The chemical formula of the dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material is TiO2:xDy<3+>,yHo<3+>, wherein x is 0.002-0.06, and y is 0.002-0.04. The dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material can be excited through long wave radiation to emit blue light. The invention also provides a preparation method of the dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material, and an application of the dysprosium-holmium-codoped titanium dioxide up-conversion luminescence material.

Description

technical field [0001] The invention relates to a dysprosium-holmium co-doped titanium dioxide up-conversion luminescent material, a preparation method thereof and an organic light-emitting diode using the dysprosium-holmium co-doped titanium dioxide 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, biomolecular fluo...

Claims

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Application Information

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