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Rare-earth ion doped mayenite polycrystalline powder with up-conversion photochromic adjustability and preparation method and application

A rare earth ion, tunable technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of unreported dodecacalcium heptaaluminate polycrystalline powder, and achieve the effect of easy access to raw materials

Inactive Publication Date: 2017-08-04
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, rare earth ion doped dodecacalcium heptaaluminate polycrystalline powder with tunable light color has not been reported yet.

Method used

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  • Rare-earth ion doped mayenite polycrystalline powder with up-conversion photochromic adjustability and preparation method and application
  • Rare-earth ion doped mayenite polycrystalline powder with up-conversion photochromic adjustability and preparation method and application
  • Rare-earth ion doped mayenite polycrystalline powder with up-conversion photochromic adjustability and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Weigh 5.7583g of calcium carbonate with a purity of 99.99% and 3.4219g of alumina with a purity of 99.99% and add it to the ball mill jar, then add 0.5509g of ytterbium oxide with a purity of 99.99%, 0.1798g of thulium oxide with a purity of 99.99% and 0.0891g Erbium oxide with a purity of 99.99%; ball milled for 12 hours and ground into powder; calcined at 1350°C for 10 hours in a high-temperature furnace to obtain polycrystalline dodecacalcium heptaaluminate (C12A7: Tm 3+ / Yb 3+ / Er 3+ ). The molar concentration of ytterbium ions in the obtained doped calcium dodecaaluminate polycrystalline powder is 1.0%, the molar concentration of thulium ions is 0.5%, and the molar concentration of erbium ions is 3.0%.

[0030] figure 1 For the C12A7 of Example 1: Tm 3+ / Yb 3+ / Er 3+ Polycrystalline powder XRD pattern. like figure 1 As shown, C12A7#48-1882 is the standard XRD diffraction peak of C12A7. Description Tm 3+ / Yb 3+ / Er 3+ Co-doped dodecacalcium heptaaluminat...

Embodiment 2

[0032] Weigh 5.8116g of calcium carbonate with a purity of 99.99% and 3.4536g of alumina with a purity of 99.99% and add it to the ball mill jar, then add 0.5546g of ytterbium oxide with a purity of 99.99%, 0.0905g of thulium oxide with a purity of 99.99% and 0.0897g Erbium oxide with a purity of 99.99%; milled into powder after 12 hours of ball milling; calcined at 1350°C for 10 hours in a high-temperature furnace to obtain doped calcium heptaaluminate polycrystalline powder (C12A7: Tm 3+ / Yb 3+ / Er 3+ ).

[0033] The molar concentration of ytterbium ions in the obtained doped calcium dodecaaluminate polycrystalline powder is 3.0%, the molar concentration of thulium ions is 0.5%, and the molar concentration of erbium ions is 1.0%.

Embodiment 3

[0035]Weigh 5.7650g of calcium carbonate with a purity of 99.99% and 3.4259g of alumina with a purity of 99.99% into the ball mill, then add 0.1838g of ytterbium oxide with a purity of 99.99%, 0.0900g of thulium oxide with a purity of 99.99% and 0.5353g Erbium oxide with a purity of 99.99%; ground into powder after ball milling for 12 hours; calcined at 1350 ° C for 10 hours in a high temperature furnace to obtain polycrystalline powder of dodecacalcium heptaaluminate (C12A7: Tm 3+ / Yb 3+ / Er 3+ ).

[0036] The molar concentration of ytterbium ions in the obtained polycrystalline powder doped with dodecalumina heptaaluminate is 3.0%, the molar concentration of thulium ions is 0.5%, and the molar concentration of erbium ions is 0.5%.

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Abstract

The invention discloses rare-earth ion doped mayenite polycrystalline powder with up-conversion photochromic adjustability. The rare-earth ion doped mayenite polycrystalline powder is prepared by grinding calcium carbonate, aluminum oxide, ytterbium oxide, thulium oxide and erbium oxide, calcining at 1320-1420 DEG C, cooling and then grinding. The molar ratio of aluminum oxide to calcium carbonate is 7:12; the doping molar concentration of tterbium oxide is 0.5-1.5%; the doping molar concentration of thulium oxide is 0.25-0.5%; and the doping molar concentration of erbium oxide is 0.25-1.5%. The doped mayenite polycrystalline powder is good in dispersity and has the photochromic adjustability, and adjustment of green light-yellow light-red light can be achieved through adjusting the doping concentration and the proportional relationship of aluminum oxide, the ytterbium oxide and the thulium oxide under the excitation of 980nm infrared light.

Description

technical field [0001] The invention belongs to the technical field of up-conversion optical materials, and more specifically relates to a rare earth ion-doped dodecacalcium heptaaluminate polycrystalline powder with adjustable up-conversion light color and its preparation method and application. Background technique [0002] Photochromatic tunable polycrystalline powder can be widely used in the fields of color display, light-emitting device, three-dimensional display, biomarker and imaging due to its rich luminescent colors, and has great application potential in the fields of national economy and national defense construction. Up-conversion rare earth ions have abundant energy levels and can emit blue, green and red visible light under 980nm laser excitation; trivalent thulium ions (Tm 3+ )Have: 1 G 4 → 3 h 6 Transition (near 476nm) blue light, trivalent erbium ion (Er 3+ )Have 2 h 11 / 2 / 4 S 3 / 2 → 4 I 15 / 2 Transition (near 525nm / 550nm) green light and 4 f 9 / ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64
CPCC09K11/7774
Inventor 钱艳楠张正宇张海燕
Owner GUANGDONG UNIV OF TECH
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