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Ho<3+>/Yb<3+>/Li<+> codoped zinc oxide upconversion luminescence material and preparation method

A luminescent material and co-doping technology, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of high concentration doping, complicated preparation process, and low luminous intensity, and achieve environmental friendliness, simple synthesis process, and luminescent strong effect

Inactive Publication Date: 2017-03-22
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a Ho 3+ / Yb 3+ / Li + Co-doped zinc oxide up-conversion luminescent material and its preparation method solve the technical problems of complex preparation process of zinc oxide up-conversion luminescent material in the prior art, low luminous intensity, and impossibility of high-concentration doping

Method used

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  • Ho&lt;3+&gt;/Yb&lt;3+&gt;/Li&lt;+&gt; codoped zinc oxide upconversion luminescence material and preparation method
  • Ho&lt;3+&gt;/Yb&lt;3+&gt;/Li&lt;+&gt; codoped zinc oxide upconversion luminescence material and preparation method
  • Ho&lt;3+&gt;/Yb&lt;3+&gt;/Li&lt;+&gt; codoped zinc oxide upconversion luminescence material and preparation method

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Embodiment 1

[0026] The present invention provides a Ho 3+ , Yb 3+ , Li + Co-doped ZnO up-conversion luminescent material, the chemical composition is Zn 1-x-y- z Ho x Yb y Li z O, where Ho 3+ is the active ion, Yb 3+ is the sensitizer, x is Ho 3+ Mole percentage of doping, y is Yb 3+ Mole percent of doping, z is Li + The molar percentage of doping, and x+y+z=15.5mol%, preparation steps are as follows:

[0027] Step 1, prepare zinc acetate solution, get the Zn(Ac) of 6.585g 2 , dissolved in 30ml of deionized water, stirred until it was fully dissolved into a colorless and transparent solution ①.

[0028] Step 2, preparing rare earth nitrate and lithium nitrate. Weigh the corresponding rare earth oxide (Ho 2 o 3 , Yb 2 o 3 ) and lithium carbonate, mixed evenly, dissolved in dilute nitric acid solution, heated and stirred at 40°C to 60°C, and after fully reacting, the solution was evaporated to dryness at 50°C to 70°C.

[0029] Step 3: Dissolve the powder obtained above in ...

Embodiment 2

[0035] In this embodiment, Ho 3+ / Yb 3+ / Li + The chemical composition and preparation method of the co-doped ZnO up-conversion luminescent material are the same as in Example 1, the difference is that x+y+z=13.5 mol%, wherein x is 1 mol%, y is 7.5 mol%, and z is 5 mol %.

Embodiment 3

[0037] In this embodiment, Ho 3+ / Yb 3+ / Li + The chemical composition and preparation method of the co-doped ZnO up-conversion luminescent material are the same as those in Example 1, except that x+y+z=11.5 mol%.

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Abstract

The present invention provides a Ho<3+> / Yb<3+> / Li<+> codoped zinc oxide upconversion luminescence material and a preparation method. ZnO is used as a matrix, and rare earth elements Ho<3+> and Yb<3+> and Li<+> are used as doping ions, and the composition formula of the material is Zn[1-x-y-z]Ho[x]Yb[y]Li[z]O. The zinc oxide upconversion luminescence material with high luminescent intensity is prepared through codoping of Ho<3+> / Yb<3+> / Li<+>, the synthesis process is simple, the repeatability is high, employed materials are environmentally friendly, safe and nontoxic, and industrialized production is easy to realize. At the same time, the upconversion luminescence intensity of zinc oxide can be obviously improved by changing Li<+> doping concentration, and can be used to display, illumination, laser anticouterfeit, etc.

Description

technical field [0001] The invention belongs to the technical field of up-conversion luminescent materials, and relates to a Ho 3+ / Yb 3+ / Li + Co-doped zinc oxide up-conversion luminescent material. Background technique [0002] In recent years, rare-earth-doped upconversion luminescent materials have attracted great attention due to their wide application in 3D stereoscopic display, laser anti-counterfeiting, bioluminescent labeling and short-wavelength lasers. But generally speaking, the up-conversion luminous efficiency is still relatively low. At present, some commonly used materials with better luminescent properties still have some problems in terms of thermal and chemical stability, mechanical strength, etc., which brings difficulties to practical applications. Therefore, finding new host materials with high conversion efficiency and excellent physical and chemical properties has become one of the current research hotspots of upconversion luminescent materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/78
CPCC09K11/7769
Inventor 于晓晨张丹丹李哲张朝光段理蒋自强赵鹏
Owner CHANGAN UNIV
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