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Praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material and its preparation method and use

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: 2015-05-27
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, the up-conversion luminescent material of praseodymium-holmium co-doped rare earth stannate, which can be excited by long-wave radiation such as infrared and red-green light to emit blue light, has not been reported yet.

Method used

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  • Praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material and its preparation method and use
  • Praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material and its preparation method and use
  • Praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material and its preparation method and use

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preparation example Construction

[0030] The preparation method of the above-mentioned praseodymium-holmium co-doped rare earth stannate up-conversion luminescent material comprises the following steps;

[0031] Step S101, according to the chemical formula Me 2-x-y SnO 5 :xPr 3+ ,yHo 3+ The stoichiometric ratio of each element in is weighed as Me 2 o 3 , SnO 2 、Pr 2 o 3and Ho 2 o 3 Powder, wherein, x is 0.002-0.06, y is 0.002-0.04, and the Me 2 o 3 It is yttrium oxide, lanthanum oxide, gadolinium oxide or lutetium oxide.

[0032] Preferably, x is 0.03 and y is 0.01.

[0033] The Me 2 o 3 , SnO 2 、Pr 2 o 3 and Ho 2 o 3 The powder molar ratio is (2-x-y): 2:x:y.

[0034] Step S102, dissolving the weighed powder in nitric acid to prepare a mixed solution; the Me 2 o 3 , SnO 2 、Pr 2 o 3 and Ho 2 o 3 The total concentration of the powder in the mixed solution is 0.5mol / L-3mol / L; then a dispersant is added to the mixed solution to obtain a precursor solution;

[0035] Preferably, the Me 2...

Embodiment 1

[0050] Weigh Y respectively according to the ratio of 1.96:2:0.03:0.01 in molar ratio 2 o 3 , SnO 2 , Pr 2 o 3 and Ho 2 o 3 The powder is dissolved in nitric acid to prepare a 1.5mol / L mixed solution, and polyethylene glycol is added as an additive to obtain a precursor solution; the concentration of polyethylene glycol in the precursor solution is 0.01mol / L. Then put the precursor solution into the atomization device, and then feed 5 L / min argon into the atomization device. The precursor solution enters a quartz tube with an inlet temperature of 180°C and an outlet temperature of 110°C along with the argon carrier gas to generate a precursor. The diameter of the quartz tube is 30mm and the length is 3m. The precursor is collected and placed in a temperature-programmed furnace for calcination for 3 hours, the calcination temperature is 1100°C, and the chemical formula is Y 1.96 SnO 5 : 0.03Pr 3+ , 0.01Ho 3+ up-converting luminescent materials.

[0051] see figure ...

Embodiment 2

[0056] Weigh Y respectively according to the ratio of 1.9:2:0.06:0.04 in molar ratio 2 o 3 , SnO, Pr 2 o 3 and Ho 2 o 3 The powder was dissolved in nitric acid to prepare a mixed solution of 3 mol / L, and polyethylene glycol was added as an additive to obtain a precursor solution; the concentration of polyethylene glycol in the precursor solution was 0.05 mol / L. Then put the precursor solution into the atomization device, and then feed 15 L / min argon gas into the atomization device. The precursor solution enters a quartz tube with an inlet temperature of 220°C and an outlet temperature of 130°C along with the argon carrier gas to form a precursor. The diameter of the quartz tube is 150mm and the length is 0.5m. The precursor is collected and placed in a temperature-programmed furnace for calcination. After 5 hours, the calcination temperature is 1300°C, and the chemical formula is Y 1.9 SnO 5 : 0.06Pr 3+ , 0.04Ho 3+ Up-converting luminescent material.

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Abstract

The invention discloses a praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material. The praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material has a chemical formula of Me2-x-ySnO5: xPr<3+>, yHo<3+>, wherein x is in a range of 0.002-0.06, y is in a range of 0.002-0.04, and Me represents a lithium element, a lanthanum element, a gadolinium element or a lutecium element. The praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material can be stimulated by long-wave radiation from infrared light to green light, and in a 483nm wavelength zone, Pr<3+> ion 3P0 to 3H4 transition radiation forms a luminescence peak and thus the praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material can be used as a blue-light emission material. The invention also provides a preparation method and use of the praseodymium-holmium-codoped rare earth stannate up-conversion luminescent material.

Description

technical field [0001] The invention relates to a praseodymium-holmium co-doped rare-earth stannate up-conversion luminescent material, a preparation method thereof and an organic light-emitting diode using the praseodymium-holmium co-doped rare-earth stannate 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, biomole...

Claims

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Application Information

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IPC IPC(8): C09K11/78H01L51/54
Inventor 周明杰陈吉星王平张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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