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Samarium ytterbium co-doped titanium dioxide up-conversion luminescent material and preparation method and application thereof

A technology of titanium dioxide and luminescent materials, applied in the directions of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2014-12-03
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, SmYb co-doped TiO2 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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  • Samarium ytterbium co-doped titanium dioxide up-conversion luminescent material and preparation method and application thereof
  • Samarium ytterbium co-doped titanium dioxide up-conversion luminescent material and preparation method and application thereof
  • Samarium ytterbium co-doped titanium dioxide up-conversion luminescent material and preparation method and application thereof

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preparation example Construction

[0027] The preparation method of the above-mentioned samarium ytterbium co-doped titanium dioxide up-conversion luminescent material comprises the following steps:

[0028] Step S11, according to TiO 2 :xTm 3+ ,yYb 3+ The stoichiometric ratio of each element weighs TiO 2 , Tm 2 o 3 and Yb 2 o 3 Powder, wherein, x is 0.01-0.08, and y is 0.01-0.06.

[0029] In this step, preferably, x is 0.04 and y is 0.03.

[0030] In this step, TiO 2 , Tm 2 o 3 and Yb 2 o 3 The molar ratio of powder is (0.86~0.98):(0.01~0.08):(0.01~0.06);

[0031] More preferably, TiO 2 , Tm 2 o 3 and Yb 2 o 3 The molar ratio of the powder is 0.93:0.0.04:0.03;

[0032] Step S13, mix and dissolve the powder weighed in step S11 evenly in an acidic solution for crystallization treatment to obtain crystals, dissolve the crystals in a solvent, and then add ammonia water to adjust the pH value to 1-6 to obtain a mixed solution.

[0033] In this step, preferably, the acidic solution includes nitri...

Embodiment 1

[0044] Choose TiO 2 , Tm 2 o 3 and Yb 2 o 3 The powder is mixed according to the molar number of each component being 0.93mmol, 0.04mmol, and 0.03mmol. After mixing, dissolve in nitric acid solution for crystallization treatment to obtain crystals, then dissolve the crystals in distilled water and add ammonia water to the solution to adjust the pH value to 5. Then the mixed solution was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 300°C for 3 hours to obtain a precipitate. Then the obtained precipitate was repeatedly washed with ethanol and distilled water, evaporated to dryness at 100°C, and the dried precipitate was put into a muffle furnace and burned for 3 hours at 950°C to obtain a chemical formula of TiO 2 : 0.04Tm 3+ , 0.03Yb 3+ up-converting phosphors.

[0045] Preparation of organic light-emitting diodes The sequentially stacked substrate 1 uses soda-lime glass, the cathode 2 uses a metal Ag layer, and the or...

Embodiment 2

[0050] Choose TiO 2 , Tm 2 o 3 and Yb 2 o 3 The powder is mixed according to the molar number of each component being 0.98mmol, 0.01mmol, and 0.01mmol. After mixing, it is dissolved in nitric acid solution for crystallization treatment to obtain crystals, and then the crystals are dissolved in distilled water and ammonia water is added to the solution to adjust the pH value to 1. Then the mixed solution was transferred to a stainless steel reaction kettle lined with polytetrafluoroethylene, and kept at 150°C for 2h to obtain a precipitate. Then the obtained precipitate was repeatedly washed with ethanol and distilled water, evaporated to dryness at 100°C, and the dried precipitate was put into a muffle furnace and burned for 2 hours at 800°C to obtain the general chemical formula of TiO 2 : 0.01Tm 3+ , 0.01Yb 3+ up-converting phosphors.

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Abstract

A samarium ytterbium co-doped titanium dioxide up-conversion luminescent material has the following chemical general formula of TiO2:xTm <3+>, yYb <3+>, wherein x is 0.01-0.08 and y is 0.01-0.06. In a photoluminescence spectrum of the A samarium ytterbium co-doped titanium dioxide up-conversion luminescent material, the excitation wavelength of the A samarium ytterbium co-doped titanium dioxide up-conversion luminescent material is 578 nm, luminescence peaks of 475nm can be produced by transition radiation from <1>G4 to <3>H6 of Tm<3+> ions, and the samarium ytterbium co-doped titanium dioxide up-conversion luminescent material can be used as a blue light luminescent material. The invention also provides a preparation method of the samarium ytterbium co-doped titanium dioxide up-conversion luminescent material, and organic light-emitting diodes using the samarium ytterbium co-doped titanium dioxide up-conversion luminescent material.

Description

technical field [0001] The invention relates to a samarium ytterbium co-doped titanium dioxide up-conversion light-emitting 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, the SmYb co-doped TiO2 up-convers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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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