Praseodymium and ytterbium codope gadolinium oxide 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: 2013-04-17
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, terbium-ytterbium co-doped gadolinium oxide 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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  • Praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material and preparation method and application thereof
  • Praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material and preparation method and application thereof
  • Praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material and preparation method and application thereof

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Experimental program
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preparation example Construction

[0023] The preparation method of the above-mentioned terbium-ytterbium co-doped gadolinium oxide up-conversion luminescent material comprises the following steps:

[0024] Step S11, according to Gd 2 o 3 :xTb 3+ ,yYb 3+ The stoichiometric ratio of each element is weighed as Gd 2 o 3 , Tb 2 o 3 and Yb 2 o 3 Powder, where 0.01≤x≤0.05, 0.01≤y≤0.1.

[0025] In this step, preferably, x is 0.06 and y is 0.1.

[0026] It can be understood that Gd can also be weighed in this step 2 o 3 , Tb 2 o 3 and Yb 2 o 3 Powder and mix evenly, where Gd 2 o 3 , Tb 2 o 3 and Yb 2 o 3 The mass ratio is 3.082~3.553:0.036~0.183:0.039~0.394, preferably 3.336:0.109:0.197.

[0027] Step S13, mixing the powder weighed in step S11 evenly to obtain a precursor.

[0028] In this step, the powder is ground in a corundum bowl for 20 minutes to 60 minutes to obtain a homogeneously mixed precursor, preferably for 40 minutes.

[0029] Step S15, burning the precursor at 800°C-1000°C for 0.5...

Embodiment 1

[0038] Choose powder with a purity of 99.99%, Gd 2 o 3 , Tb 2 o 3 and Yb 2 o 3 Powder, its mass ratio is 3.336:0.109:0.197. Grind in a corundum mortar for 40 minutes to mix well, then fire at 950 °C for 3 hours. Then cool to 250°C and keep warm for 2 hours, then naturally cool to room temperature to take out the block product, and pulverize it to obtain the general chemical formula of Gd 2 o 3 :0.03Tb 3+ , 0.05Yb 3+ up-converting phosphors.

[0039] see figure 2 , figure 2 Shown are the obtained terbium-ytterbium co-doped gadolinium oxide up-conversion luminescent material and samples without ytterbium (chemical formula is Gd 2 o 3 :0.03Tb 3+ ) photoluminescence spectrum. Depend on figure 2 It can be seen that the excitation wavelength of the terbium-ytterbium co-doped gadolinium oxide up-conversion luminescent material obtained in this embodiment is 980nm, and in the 485nm wavelength region, Tb 3+ ion 5 D. 4 → 7 h 6 The transition radiation of the terb...

Embodiment 2

[0042] Choose powder with a purity of 99.99%, Gd 2 o 3 , Tb 2 o 3 and Yb 2 o 3 Powder, its mass ratio is 3.553:0.036:0.039. Grind in a corundum mortar for 20 minutes to mix well, then fire at 800°C for 5 hours. Then cool to 100°C and keep warm for 3 hours, then naturally cool to room temperature to take out the block product, and pulverize it to obtain the general chemical formula of Gd 2 o 3 :0.01Tb 3+ , 0.01Yb 3+ up-converting phosphor

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Abstract

The invention provides a praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material, the chemical formula of which is as follows: Gd2O3: xTb3+, yYb3+, wherein x is more than or equal to 0.01 and less than or equal to 0.05, and y is more than or equal to 0.01 and less than or equal to 0.1. In the photoluminescence spectra of the praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material, the excitation wave length of the praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material is 980nm, and in 485nm wave length area, glow peak is formed by the transition radiation of Tb3+ ion 5D4->7H6, thus being used as blue light luminescence materials. The invention also provides a preparation method of the praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material, and an organic light emitting diode using the praseodymium and ytterbium codope gadolinium oxide up-conversion luminescent material.

Description

【Technical field】 [0001] The invention relates to a terbium-ytterbium co-doped gadolinium oxide up-conversion luminescent material, a preparation method and an organic light-emitting diode. 【Background technique】 [0002] Organic light-emitting diodes (OLEDs) are extremely 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, terbium-ytterbium co-doped ga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78H01L51/54
Inventor 周明杰王平陈吉星钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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