Rare earth ion Tb < 3 + > doped LiTaO3 multiband emission pressure luminescent material and preparation method and application thereof

A technology of rare earth ions and luminescent materials, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of increased manufacturing costs, complex synthesis conditions, and reduced optical properties, and achieves easy control of preparation conditions, simple preparation process, and high luminous intensity. high effect

Active Publication Date: 2022-05-06
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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Problems solved by technology

However, the preparation technology of the above materials needs to be improved. On the one hand, SrAl 2 o 4 :Eu 2+ The synthesis conditions of CaZnOS and CaZnOS are complicated, and atmosphere treatment is required, which further increases the manufacturing cost, which is not conducive to commercial promotion and application, and the waterproof performance of the synthesized product is poor, and the absorption of moisture in the air will greatly reduce the optical performance, which limits the practical application; On the one hand, most of the existing stress-luminescent materials emit light in a single band, and usually only show a single emission peak, and most materials will disappear after a single application of pressure, and need to be excited again with ultraviolet light to restore the stress-luminescence. performance

Method used

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  • Rare earth ion Tb &lt; 3 + &gt; doped LiTaO3 multiband emission pressure luminescent material and preparation method and application thereof
  • Rare earth ion Tb &lt; 3 + &gt; doped LiTaO3 multiband emission pressure luminescent material and preparation method and application thereof
  • Rare earth ion Tb &lt; 3 + &gt; doped LiTaO3 multiband emission pressure luminescent material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] According to the molar ratio of each element Li:Ta:Tb=0.995:1:0.005 (equivalent to Tb doping amount x=0.005), lithium carbonate, tantalum oxide and tetraterbium heptoxide were selected as raw materials, and the weighing amount was 0.3676g , 2.2097g and 0.0094g. Fully grind in an agate mortar for 1 hour to make it mix uniformly to obtain a mixed powder. Put the mixed powder into a muffle furnace, raise the temperature from room temperature to 600°C at a rate of 5°C / min, pretreat for 2 hours in an air atmosphere, and obtain calcined powder after cooling. Grind the calcined powder again, put it into a muffle furnace from room temperature to a calcination temperature of 1100°C at a rate of 3°C / min, calcinate in an air atmosphere for 5 hours, and cool to room temperature with the furnace to obtain Li 0.995 TaO 3 :0.005Tb 3+ (x=0.005) pressure luminescence powder. The synthetic powder has high crystallinity, see figure 1 The XRD diffraction phase analysis results shown. ...

Embodiment 2

[0042] On the basis of Example 1, increase Tb 3+ Doping amount. According to the molar ratio of each element Li:Ta:Tb=0.99:1:0.01 (equivalent to Tb doping amount x=0.01), lithium carbonate, tantalum oxide and tetraterbium heptoxide were selected as raw materials, and the weighing amount was 0.3621g , 2.2097g and 0.0187g were fully ground in an agate mortar for 1 hour, and mixed evenly to obtain a mixed powder. Put the mixed powder into a muffle furnace, raise the temperature from room temperature to 600°C at a rate of 5°C / min, pretreat for 2 hours in an air atmosphere, and obtain calcined powder after cooling. Grind the calcined powder again, put it into a muffle furnace from room temperature to a calcination temperature of 1100°C at a rate of 3°C / min, calcinate in an air atmosphere for 5 hours, and cool to room temperature with the furnace to obtain Li 0.990 TaO 3 :0.01Tb 3+ (x=0.01) pressure luminescent powder. The synthetic powder has high crystallinity, see figure 1 ...

Embodiment 3

[0044] Rare earth ion Tb in the present embodiment 3 3+ Doped LiTaO 3 The preparation process of the multi-band emission piezoluminescent material is referred to Example 2, the difference is: x=0.015. See figure 1 The XRD diffraction phase analysis results shown. It is detected that the pressure luminescent material prepared in Example 3 has a luminous emission peak of a line spectrum under a pressure of 2000N, and has blue light emission at 487nm, green light emission at 541nm, and yellow light emission at 583nm. and orange emission at 618nm, see figure 2 The results of pressure emission spectroscopy are shown.

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Abstract

The invention relates to a rare earth ion Tb < 3 + >-doped LiTaO3 multiband emission pressure luminescent material and a preparation method and application thereof, the general chemical formula of the rare earth ion Tb < 3 + >-doped LiTaO3 multiband emission pressure luminescent material is Li (1-x) TaO3: xTb < 3 + >, and x is more than or equal to 0.005 and less than or equal to 0.03.

Description

technical field [0001] The invention relates to a rare earth ion Tb 3+ Doped LiTaO 3 The multi-band emission pressure luminescence material and its preparation method and application belong to the technical field of optical functional materials and the field of stress luminescence. Background technique [0002] Under the action of external mechanical stress (such as friction, impact, compression, stretching, bending, twisting, scraping, grinding, cutting, cracking, etc.), the stress luminescent material can release the stored energy in the form of luminescence. Stress sensing, lighting and display driven by mechanical force, artificial intelligence skin, safety and health diagnosis of structural parts and many other fields have broad application prospects, and have attracted extensive attention from domestic and foreign researchers. The phenomenon of stress luminescence was first discovered and recorded in sugar crystal blocks in 1605. In 1998, Akiyama et al. reported tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/67
CPCC09K11/7744Y02B20/00
Inventor 刘茜邓明雪徐小科
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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