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A kind of calcium ion doping enhanced up-conversion red light emitting material and preparation method thereof

An emission material and calcium ion technology, which is applied in the field of calcium ion doping enhanced up-conversion red light emission material and its preparation, can solve the problem of low red light emission efficiency, achieve simple synthesis method, increase energy transfer efficiency, and yield high effect

Active Publication Date: 2021-12-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at the technical problems of low red light emission efficiency of up-conversion luminescent materials in the above-mentioned prior art. The present invention proposes a calcium ion-doped up-conversion strong red light emission material and its preparation method. The dopant concentration is used to improve the sensitization and emission capabilities of rare earth ions in the host material, making it emit stronger red light

Method used

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  • A kind of calcium ion doping enhanced up-conversion red light emitting material and preparation method thereof
  • A kind of calcium ion doping enhanced up-conversion red light emitting material and preparation method thereof
  • A kind of calcium ion doping enhanced up-conversion red light emitting material and preparation method thereof

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Effect test

Embodiment 1

[0045] In this example, a calcium ion-doped enhanced up-conversion red light-emitting material Ba 1.8 Ca 0.2 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 , and now x=0.2, the specific preparation steps are as follows:

[0046] Step 1: According to the molar ratio of elements Ba, Ca, Sc, Yb, Er, Al being 1.98:0.2:0.67:0.3:0.03:1, calculate the required amount of each raw material, weigh 0.01505mol of barium carbonate, 0.00152 mol calcium carbonate, the quality of 0.00255mol scandium oxide, 0.00114mol ytterbium oxide, 0.00011mol erbium oxide and 0.00760mol aluminum hydroxide;

[0047] Step 2: Pour all the raw materials weighed in step 1 into a 50mL beaker, add 35mL of absolute ethanol, and fully stir with a magnetic stirrer for 60min to obtain a uniformly mixed suspension;

[0048] Step 3: Put the suspension obtained in Step 2 into a blast drying oven for 25 minutes, and dry it at 60°C for 15 hours. Completely evaporate the absolute ethanol in the beaker to obtain a dry mixed raw materi...

Embodiment 2

[0054] In this embodiment, the calcium ion doping enhanced up-conversion red light emitting material Ba was prepared according to the method of the above-mentioned embodiment 1. 1.6 Ca 0.4 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 , at this time x=0.4, the difference is only in the quality of the weighed calcium carbonate and barium carbonate, specifically: weighing 0.01338mol of barium carbonate, 0.00304mol of calcium carbonate, 0.00255mol of scandium oxide, 0.00114mol of ytterbium oxide, 0.00011 mol of erbium oxide and 0.00760 mol of aluminum hydroxide mass; other steps remain unchanged. Finally, calcium ion-doped enhanced upconversion red light-emitting material Ba 1.6 Ca 0.4 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 . The purpose is to further increase the doping ratio of calcium ions, hoping to obtain the best doping ratio of calcium ions.

[0055] Figure 7 The XRD pattern shows that the obtained Ba 1.6 Ca 0.4 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 The physical phase conforms to Ba...

Embodiment 3

[0058] In this embodiment, the calcium ion doping enhanced up-conversion red light emitting material Ba was prepared according to the method of the above-mentioned embodiment 1. 1.5 Ca 0.5 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 , at this time x=0.5, the difference is only that the quality of the calcium carbonate and barium carbonate taken is different, specifically: weighing 0.01254mol of barium carbonate, 0.00380mol of calcium carbonate, 0.00255mol of scandium oxide, 0.00114mol of ytterbium oxide, 0.00011 mol of erbium oxide and 0.00760 mol of aluminum hydroxide mass; other steps remain unchanged. Finally, calcium ion-doped enhanced upconversion red light-emitting material Ba 1.5 Ca 0.5 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 . The purpose is to verify whether there is a maximum value of calcium ion doping ratio compared with Example 2.

[0059] Figure 9 The XRD diffraction spectrum shows that the obtained Ba 1.5 Ca 0.5 (Sc 0.67 Yb 0.3 Er 0.03 )AlO 5 The crystal structure...

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Abstract

The present invention discloses a calcium ion doping enhancement conversion red light emission material and a preparation method thereof, belonging to the technical field of upper conversion fluorescent materials.Material structure is BA 2‑x CA x (SC 0.67 YB 0.3 ER 0.03 ALO 5 0 <x ≤ 0.5.The preparation method is a high temperature solid phase method: according to a certain proportion of calcium carbonate, calcium carbonate, oxide, oxide, oxide and aluminum hydroxide as a raw material, add anhydrous ethanol, stir well, dry, and then press the filmSintering 1600 to 1700 ° C in the hydrogen furnace.The present invention enhances the sensitization and emission capability of rare earth ions in the matrix material by regulating the doping concentration of calcium ions, making it a more strong red light, compared to the material of the undoped calcium ion, Ba 2 (SC 0.67 YB 0.3 ER 0.03 ALO 5 The relative intensity of the 662 nm red light excited by the material is about 20.3 times higher.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a calcium ion-doped enhanced up-conversion red light emitting material and a preparation method thereof. Background technique [0002] With the development of laser technology and nanotechnology, rare earth-doped up-conversion materials have inestimable potential value in three-dimensional display, solar cells, biological imaging and biological therapy. In the study of upconversion nanomaterials, the application of rare earth doped nanocrystal materials is the most extensive. Compared with the instability of organic dyes, high photobleaching rate, microtoxicity of quantum dot materials, non-specific binding interference and other shortcomings, rare earth doped up-conversion fluorescent materials have extremely high optical stability, low biological toxicity and low photobleaching. In recent years, the research on rare earth-doped up-conversion materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/80
CPCC09K11/7769
Inventor 付浩胡俊山刘立新王若男边晓敏黄政虎
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA