A kind of preparation method of transparent nanocrystal doped glass

A technology of doping glass and nanocrystals, which is applied in the field of optical functional materials, can solve the problems of difficulty in preparing transparent nanocrystal-doped glass, poor controllability of nanocrystal size and content, and reduced glass permeability. High luminous intensity and quantum efficiency, good thermal stability, high luminous intensity and quantum efficiency

Active Publication Date: 2016-06-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These traditional preparation methods have poor controllability to the size and content of nanocrystals in glass. Once the size of nanocrystals exceeds a certain size, the permeability of glass will decrease rapidly.
It is difficult to prepare transparent nanocrystalline doped glass
This limits its practical application to some extent

Method used

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  • A kind of preparation method of transparent nanocrystal doped glass
  • A kind of preparation method of transparent nanocrystal doped glass
  • A kind of preparation method of transparent nanocrystal doped glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The composition of the nanocrystalline doped glass in this embodiment is: 90wt% tellurate glass and 10wt% YOF: Er 3+ Nanocrystalline. Among them, the molar composition of tellurite glass is: TeO 2 : 60%, ZnO: 25%, Na 2 O: 15%. Tellurite glass is prepared by traditional melting and quenching technology, and TeO is introduced according to the set molar ratio of the components. 2 , ZnO, Na 2 O and mixed evenly, melted at 760°C and held for 30 minutes, then passed through high-purity oxygen for 30 minutes to remove hydroxyl groups, and obtained large pieces of tellurite glass after quenching.

[0032] YOF of this example: 5% Er 3+ The nanocrystals are prepared by the following method: prepared by co-precipitation, mixing the corresponding cation solution according to the stoichiometric ratio, and performing magnetic stirring, adding KF and a certain amount of the same substance as the cation in the solution during the stirring process. A certain amount of CO (NH 2 ) ...

Embodiment 2

[0040] Except the following features, the preparation process of this embodiment is the same as that of Example 1:

[0041] The composition of the nanocrystalline doped glass in this embodiment is: 99.9wt% tellurate glass and 0.01wt% YOF: Er 3+ Nanocrystalline. The molar composition of the tellurite glass in this embodiment is: TeO 2 : 85%, ZnO: 5%, Na 2 O: 10%.

[0042] Step (4), in this embodiment, co-melting is carried out at 600° C., and nitrogen gas under negative pressure is introduced during the co-melting process to eliminate residual bubbles during the co-melting process.

[0043] The performance of the nanocrystal-doped glass prepared in this example is similar to that of Example 1, and will not be repeated here.

Embodiment 3

[0045] Except the following features, the preparation process of this embodiment is the same as that of Example 1:

[0046] The composition of the nanocrystalline doped glass in this embodiment is: 70wt% tellurate glass and 30wt% YOF: Er 3+ Nanocrystalline. The molar composition of the tellurite glass in this embodiment is: TeO 2 : 40%, ZnO: 20%, Na 2 O: 40%.

[0047] Step (4), in this embodiment, co-melting is carried out at 550° C., and positive-pressure nitrogen gas is introduced during the co-melting process to eliminate residual bubbles during the co-melting process.

[0048] The performance of the nanocrystal-doped glass prepared in this example is similar to that of Example 1, and will not be repeated here.

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Abstract

The invention discloses a preparation method of transparent nanocrystal-doped glass, which comprises the following steps: (1) fully ball-milling glass powder to obtain submicron or micron-sized particles; (2) stirring the fluorescent nanocrystal after removing hydroxyl groups Disperse in a solvent that does not contain hydroxyl groups, and perform strong ultrasonication to obtain fluorescent nanocrystals / solvent; (3) slowly add submicron or micron-sized particles to fluorescent nanocrystals / solvent under stirring, and place in a fume hood The Bank of China stirs and disperses at high speed until the solvent without hydroxyl groups is completely volatilized to obtain a nanocrystal / glass powder mixture; (4) The nanocrystal / glass powder mixture is used as a precursor to co-melt at 550-600°C. Into the protective gas. The nanocrystal-doped glass prepared by the method of the invention has the advantages of good permeability and excellent thermal stability, and has important application prospects in the fields of illumination, display, laser and other optoelectronics.

Description

technical field [0001] The invention relates to optical functional materials, in particular to a method for preparing transparent nanocrystal-doped glass. Background technique [0002] Phosphoric luminescent materials can be divided into three types according to the different doping matrixes: luminescent crystal materials, luminescent glass and luminescent nanocrystalline doped glass. Among them, luminescent crystal materials mainly refer to phosphor polycrystalline materials and single crystal materials, which have high luminous intensity and quantum efficiency, and are currently widely used in optoelectronic devices such as white light LEDs and solid-state lasers. However, luminescent crystal materials are not easy to be processed plastically, and it is difficult to draw them into optical fibers, so it is difficult to apply them in small and economical optical fiber devices. Although luminescent glass is easy to process and draw optical fibers, its luminous efficiency is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/00
Inventor 董国平张远浩吴国波黄雄健何慧琳杨中民邱建荣
Owner SOUTH CHINA UNIV OF TECH
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