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Praseodymium-doped cerium phosphate up-conversion luminescent material, and preparation method and application thereof

A technology of cerium phosphate glass and luminescent materials, 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 upconversion luminescent material of praseodymium-doped cerium phosphate glass, which can be excited by long-wave radiation such as infrared, red and green light, and emits blue light, has not been reported yet.

Method used

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  • Praseodymium-doped cerium phosphate up-conversion luminescent material, and preparation method and application thereof
  • Praseodymium-doped cerium phosphate up-conversion luminescent material, and preparation method and application thereof
  • Praseodymium-doped cerium phosphate up-conversion luminescent material, and preparation method and application thereof

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preparation example Construction

[0028] The preparation method of the above-mentioned praseodymium-doped cerium phosphate glass up-conversion luminescent material comprises the following steps:

[0029] Step S11, according to Ce 1-x PO 4 :xPr 3+ The stoichiometric ratio of each element weighs Ce 2 o 3 , P 2 o 5 and Pr 2 o 3 Powder, wherein, x is 0.002-0.03.

[0030] In this step, the Ce 2 o 3 , P 2 o 5 and Pr 2 o 3 Powder, wherein, x is 0.002-0.03 The molar ratio of each component of the powder is (0.97-0.998):1:(0.002-0.03).

[0031] In this step, preferred Ce 2 o 3 , P 2 o 5 and Pr 2 o 3 The molar ratio of each component of the powder is 0.99:1:0.01.

[0032] Step S13, mixing the powder weighed in step S11 evenly to obtain a precursor.

[0033] In this step, the powder is ground in a corundum bowl for 20 minutes to 60 minutes to obtain a uniformly mixed precursor, preferably for 40 minutes.

[0034] Step S15, burning the precursor at 800° C. to 1000° C. for 0.5 hours to 5 hours,

[0...

Embodiment 1

[0042] Select powder with a purity of 99.99%, and Ce 2 o 3 , P 2 o5 and Pr 2 o 3 Each component of the powder is 0.99mmol, 1mmol and 0.01mmol in moles, grind it in a corundum mortar for 40 minutes to make it evenly mixed, then burn it in a muffle furnace at 950°C for 3 hours, then cool to 200°C and keep it warm After 2 hours, take it out with the furnace cooling to room temperature to obtain bulk material, which can be crushed to obtain the general chemical formula of Ce 0.99 PO 4 : 0.01Pr 3+ Up-converting phosphors.

[0043] The process of making organic light-emitting diodes

[0044] The sequentially stacked substrate 1 uses soda-lime glass, the cathode 2 uses a metal Ag layer, and the organic light-emitting layer 3 uses Ir(piq)2(acac), the Chinese name is bis(1-phenyl-isoquinoline)(acetylacetonate) iridium (III), the transparent anode 4 uses indium tin oxide ITO, and the transparent encapsulation layer 5 is polytetrafluoroethylene. Praseodymium-doped cerium phospha...

Embodiment 2

[0049] Select powder with a purity of 99.99%, and Ce 2 o 3 , P 2 o 5 and Pr 2 o 3 Each component of the powder is 0.97mmol, 1mmol and 0.03mmol by mole, and it is ground in a corundum mortar for 20 minutes to make it evenly mixed, and then burned in a muffle furnace at 800°C for 3 hours, and then cooled to 250 ℃ for 2 hours, then cooled to room temperature with the furnace and taken out to obtain a bulk material. After crushing, the general chemical formula can be obtained as Ce 0.97 PO 4 : 0.03Pr 3+ up-converting phosphors.

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Abstract

The invention provides a praseodymium-doped cerium phosphate up-conversion luminescent material. The material has the chemical formula of Ce1-xPO4: xPr<3+>, wherein x is in a range of 0.002 to 0.03. According to the photoluminescence spectrum of the praseodymium-doped cerium phosphate up-conversion luminescent material, the excitation wavelength of the material is 578 nm, transition radiation of Pr3+ ions from 3P0 to 3H4 in the region of 483-nm wavelength leads to formation of luminescent peaks, so the material can be used as a blue-light emitting material. The invention also provides a preparation method for the praseodymium-doped cerium phosphate up-conversion luminescent material and an organic light emitting diode using the praseodymium-doped cerium phosphate up-conversion luminescent material.

Description

technical field [0001] The invention relates to a praseodymium-doped cerium phosphate glass up-conversion luminescent 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 up-conversion luminescent material ...

Claims

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Application Information

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IPC IPC(8): C09K11/81H01L51/54
Inventor 周明杰陈吉星王平黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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