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Bismuth-doped silicate UV long-afterglow luminescent powder

A technology of long-lasting luminescent powder and silicate, which is applied in the direction of luminescent materials, chemical instruments and methods, and can solve the problems of high cost, complexity and long emission wavelength of the preparation method

Active Publication Date: 2014-01-22
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems of long afterglow materials on the market in the prior art with long emission wavelength, narrow band range, high cost and complicated preparation methods, the present invention provides a bismuth-doped silicate ultraviolet long afterglow luminescent powder. The present invention adopts The following technical solutions are realized

Method used

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  • Bismuth-doped silicate UV long-afterglow luminescent powder
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  • Bismuth-doped silicate UV long-afterglow luminescent powder

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Embodiment 1

[0018] The bismuth-doped silicate ultraviolet long-lasting luminescent powder, the expression of the ultraviolet long-lasting luminescent powder is MSiO 3 : xBi, where M is Cd and x represents a molar value of 0.05. The afterglow spectrum and afterglow decay time diagram of the bismuth-doped silicate ultraviolet long-lasting luminescent powder are as follows figure 1 and 2 shown.

[0019] Among them, the long afterglow luminous powder is composed of M (NO 3 ) 2 , SiO 2 and Bi 2 o 3 The material is made at a molar ratio of 1:1:0.025, where M is Cd.

Embodiment 2

[0021] The bismuth-doped silicate ultraviolet long-lasting luminescent powder, the expression of the long-lasting luminescent powder is MSiO 3 : xBi, where M is Cd and x represents a molar value of 0.005. The afterglow spectrum and afterglow decay time diagram of the bismuth-doped silicate ultraviolet long-lasting luminescent powder are as follows image 3 and 4 shown.

[0022] Among them, the long afterglow luminescent powder is made of MO, SiO 2 and Bi 2 o 3 The material is made at a molar ratio of 1:1:0.0025, where M is Cd.

Embodiment 3

[0024] The bismuth-doped silicate ultraviolet long-lasting luminescent powder, the expression of the long-lasting luminescent powder is MSiO 3 : xBi, where M is Cd and x represents a molar value of 0.001. The afterglow spectrum and afterglow decay time diagram of the bismuth-doped silicate ultraviolet long-lasting luminescent powder are as follows Figure 5 and 6 shown.

[0025] Among them, the long afterglow luminescent powder is made of MO, SiO 2 and Bi 2 o 3 The material is made at a molar ratio of 1:1:0.0005, where M is Cd.

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Abstract

The invention relates to a bismuth-doped silicate UV long-afterglow luminescent powder, and belongs to the technical field of fluorescent powders for display, disinfection and illumination. The bismuth-doped silicate UV long-afterglow luminescent powder has a formula of MSiO3:xBi, wherein M represents Mg, Ca, Sr, Ba or Cd, x represents a molar value of 0.001-0.05; and the long-afterglow luminescent powder is prepared from MO (or M(NO3)2), SiO2 and Bi2O3 according to a molar ratio of 1:1:0.0005-0.025, wherein M represents Mg, Ca, Sr, Ba or Cd. According to the material, the long-afterglow emission wavelength is expanded to UV region from visible region and infrared region, the material can generate long afterglow of UV under the excitation of ultraviolet light, and the material is expected to become a novel UV disinfection and light source material.

Description

technical field [0001] The invention relates to a bismuth-doped silicate ultraviolet long-lasting luminescent powder, which belongs to the technical field of display, disinfection and lighting fluorescent powder. Background technique [0002] Long afterglow luminescent materials have the characteristics of light storage, energy storage and energy saving, and have unique advantages in light energy conversion and utilization. They can store light energy and then slowly release the stored energy in the form of visible light. Therefore, Long afterglow luminescent materials have unique application advantages in low-light lighting, emergency indication and other fields. For example: when the "9.11" incident in the United States shocked China and the world, the luminescent signs and indication systems made of long-lasting luminescent materials played an important role in the evacuation process. Therefore, in recent years, long-lasting luminescent materials that can realize "energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/59
Inventor 杨正文廖佳燕邱建备宋志国周大成
Owner KUNMING UNIV OF SCI & TECH