Up-conversion luminescent material of rare-earth doped thiomolybdate and preparation method of up-conversion luminescent material, and organic light-emitting diode

A thiomolybdate and rare earth doping technology, which is applied in the direction of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., to achieve the effects of high purity, promotion of development, and broad commercial development prospects

Inactive Publication Date: 2015-02-11
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, rare earth-doped thiomolybdate upconversion luminescent materials that can be excited by lo

Method used

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  • Up-conversion luminescent material of rare-earth doped thiomolybdate and preparation method of up-conversion luminescent material, and organic light-emitting diode
  • Up-conversion luminescent material of rare-earth doped thiomolybdate and preparation method of up-conversion luminescent material, and organic light-emitting diode
  • Up-conversion luminescent material of rare-earth doped thiomolybdate and preparation method of up-conversion luminescent material, and organic light-emitting diode

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Example Embodiment

[0028] Example 1

[0029] A method for preparing a rare earth-doped thiomolybdate up-conversion luminescent material, the steps comprising:

[0030] (1) Weigh Li 2 S, La 2 S 3 , MoS 3 , Pr 2 S 3 and Yb 2 S 3 Powder, respectively 1mmol, 0.89mmol, 4mmol, 0.05mmol, 0.06mmol;

[0031] (2) Dissolve all the powders weighed above in the hydrogen sulfide aqueous solution to obtain a mixed solution, drop oxalic acid and ammonia water into the mixed solution while stirring, and continue to drop the ammonia water when no more precipitates are formed in the mixed solution. , adjust the pH value of the mixed solution to about 8, let stand for 2 hours to make the precipitation complete, and filter to obtain the precipitate;

[0032] (3) The obtained precipitate was repeatedly washed with absolute ethanol and distilled water, and finally calcined at 1000 °C for 2 hours to obtain the final product LiLa 0.89 (MoS 4 ) 2 : 0.05Pr 3+ ,0.06Yb 3+ Upconversion phosphor.

[0033] It is...

Example Embodiment

[0035] Example 2

[0036] A method for preparing a rare earth-doped thiomolybdate up-conversion luminescent material, the steps comprising:

[0037] (1) Weigh Li 2 S, La 2 S 3 , MoS 3 , Pr 2 S 3 and Yb 2 S 3 Powder, respectively 1mmol, 0.82mmol, 4mmol, 0.08mmol, 0.1mmol;

[0038] (2) Dissolve all the powders weighed above in the hydrogen sulfide aqueous solution to obtain a mixed solution, drop oxalic acid and ammonia water into the mixed solution while stirring, and continue to drop the ammonia water when no more precipitates are formed in the mixed solution. , adjust the pH value of the mixed solution to about 10, let stand for 1 hour to make the precipitation complete, and filter to obtain the precipitate;

[0039] (3) The obtained precipitate was repeatedly washed with absolute ethanol and distilled water, and finally calcined at 900 °C for 0.5 hours to obtain the final product LiLa 0.82 (MoS 4 ) 2 : 0.08Pr 3+ ,0.1Yb 3+ Upconversion phosphor.

Example Embodiment

[0040] Example 3

[0041] A method for preparing a praseodymium-doped thiomolybdate up-conversion luminescent material, the steps comprising:

[0042] (1) Weigh Li 2 S, La 2 S 3 , MoS 3 and Pr 2 S 3 Powder, respectively 1mmol, 0.99mmol, 4mmol, 0.01mmol;

[0043] (2) Dissolve all the powders weighed above in the hydrogen sulfide aqueous solution to obtain a mixed solution, drop oxalic acid and ammonia water into the mixed solution while stirring, and continue to drop the ammonia water when no more precipitates are formed in the mixed solution. , adjust the pH value of the mixed solution to about 9.5, stand for 1.5 hours to complete the precipitation, filter to obtain the precipitate;

[0044] (3) The obtained precipitate was repeatedly washed with absolute ethanol and distilled water, and finally calcined at 1300 °C for 1 hour to obtain the final product LiLa 0.99 (MoS 4 ) 2 : 0.01Pr 3+ Upconversion phosphor.

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Abstract

The invention provides an up-conversion luminescent material of rare-earth doped thiomolybdate. The chemical formula of the up-conversion luminescent material is LiLa1-x-y(MoS4)2:xPr<3+>, yYb<3+>, wherein x is smaller than or equal to 0.08 and greater than or equal to 0.01; and y is smaller than or equal to 0.1 and greater than or equal to 0. The up-conversion luminescent material of the rare-earth doped thiomolybdate can be excited by long-wave radiation from an infrared light to a green light; an emission peak is formed by transition radiation from <3>P0 to <3>H4 of Pr<3+> ions in a wavelength region of 485nm; and the up-conversion luminescent material can be used as a blue luminescent material. The invention also provides a preparation method of the up-conversion luminescent material of the rare-earth doped thiomolybdate, and an organic light-emitting diode using the up-conversion luminescent material of the rare-earth doped thiomolybdate.

Description

technical field [0001] The invention belongs to the field of semiconductor photoelectric materials, and in particular relates to a rare earth-doped thiomolybdate up-conversion luminescent material, a preparation method thereof, and an organic light-emitting diode. Background technique [0002] Organic light-emitting diode (OLED) is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding performances such as ultra-thin, self-luminous, fast response, low power consumption, etc., and has extremely broad application prospects in display, lighting and other fields. 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 a...

Claims

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Application Information

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IPC IPC(8): C09K11/84H01L51/54
Inventor 周明杰陈吉星王平钟铁涛
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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