Neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material, and preparation method and application thereof

A technology of alkaline earth fluoride, luminescent material, applied in the direction of luminescent material, chemical instrument and method, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2014-10-15
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the NdYb co-doped alkaline earth fluoride salt glass up-conversion luminescent material that 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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  • Neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material, and preparation method and application thereof
  • Neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material, and preparation method and application thereof
  • Neodymium-and-ytterbium-codoped alkaline earth fluoride glass 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 neodymium and ytterbium co-doped alkaline earth fluoride salt glass up-conversion luminescent material comprises the following steps:

[0029] Step S11, according to MeF 2 : xYb 3+ ,yNd 3+ The stoichiometric ratio of each element is weighed in MeF 2 , YbF 3 and NdF 3 Powder, wherein x is 0.005-0.05, y is 0.002-0.03, and Me is one of magnesium, calcium, strontium and barium elements.

[0030] In this step, the MeF 2 , YbF 3 and NdF 3 The molar ratio of each component of the powder is (92-99.3): (0.5-5): (0.2-3).

[0031] In this step, preferably, MeF 2 , YbF 3 and NdF 3 The molar ratio of each component of the powder is 96:3:1.

[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 ...

Embodiment 1

[0042] The powder with a purity of 99.99% is selected, and the MgF 2 , YbF 3 and NdF 3 Each component of the powder is 0.96mmol, 0.03mmol, 0.01mmol by mole, 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 it down to 250°C and keep it warm After 2 hours, cool to room temperature with the furnace and take it out to obtain a bulk material, which can be crushed to obtain a chemical formula of MgF 3 : 0.03Yb 3+ , 0.01Nd 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. The transparent encapsul...

Embodiment 2

[0049] The powder with a purity of 99.99% is selected, and the MgF 2 , YbF 3 and NdF 3 Each component of the powder is 0.965mmol, 0.005mmol, 0.03mmol by mole, grind it in a corundum mortar for 20 minutes to make it evenly mixed, then burn it in a muffle furnace at 800°C for 3 hours, then cool it down to 100°C and keep it warm After 3 hours, take it out after cooling down to room temperature with the furnace to obtain a block material, which can be crushed to obtain the general chemical formula of MgF 3 : 0.005Yb 3+ , 0.03Nd 3+ up-converting phosphors.

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Abstract

The invention provides a neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material. The chemical formula of the luminescent material is MeF2: xYb3+,yNd3+, wherein x is in a range of 0.005 to 0.05, y is in a range of 0.002 to 0.03, and Me is one selected from the group consisting of magnesium, calcium, strontium and barium. In the photoluminescence spectrum of the neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material, the excitation wavelength of the neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material is 586 nm, and in the wavelength zone of 469 nm, a luminescence peak is formed by transition radiation of Nd3+ ions from 2P3 / 2 to 4I15 / 2; and the material can be used as a blue-light luminescent material. The invention further provides a preparation method for the neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material and an organic light-emitting diode using the neodymium-and-ytterbium-codoped alkaline earth fluoride glass up-conversion luminescent material.

Description

technical field [0001] The invention relates to a neodymium-ytterbium co-doped alkaline earth fluoride salt 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 NdYb co-doped...

Claims

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Application Information

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IPC IPC(8): C09K11/61H01L51/54
Inventor 周明杰王平陈吉星黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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