Nano-diamond/tellurium germanate glass microspheres with NV (Nitrogen Vacancy) center light emitting effect and preparation method of nano-diamond/tellurium germanate glass microspheres

A technology of nano-diamond and tellurium germanate, which is applied in glass manufacturing equipment, glass furnace equipment, glass forming, etc., can solve the problems of harmfulness to the body and the environment, occupying space, etc., and achieves low cost, high concentration, and simple preparation process Effect

Active Publication Date: 2018-01-19
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The denitrification catalyst after a large amount of use becomes waste, which not only takes up a lot o

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A nano-diamond / germanate tellurite composite glass, the composition of raw materials is as shown in 1# in Table 1;

[0034] Under the pumping of a 532nm semiconductor laser, the nano-diamond raw material was tested, and the luminescence of the NV color center was not obtained at 500nm-800nm.

[0035] Concrete preparation process is as follows:

[0036] (1) According to the mass percentage of 1# in Table 1, weigh the nano-diamond, vacuum-pack the nano-diamond in a quartz test tube, and put it into a high-temperature furnace that has been heated to 750 ° C. After 2 hours, cool down to 90°C at a rate of 200°C / hour, then close the high-temperature furnace and cool down to room temperature;

[0037] Under the pumping of a 532nm semiconductor laser, the nano-diamond obtained above was tested, and a luminescent band of an NV color center with a wavelength range of 610nm-790nm was obtained, and the center wavelength was at 637nm.

[0038] (2) According to 1# mass percentage in ...

Embodiment 2

[0043] Embodiment 2: a kind of nano-diamond / germanate tellurite composite glass microsphere with NV color center luminescence;

[0044] A kind of nano-diamond / germanium tellurate composite glass with NV color center, the composition of raw materials is as shown in 2# in Table 1;

[0045] Under the pumping of a 532nm semiconductor laser, the nano-diamond raw material was tested, and the luminescence of the NV color center was not obtained at 500nm-800nm.

[0046] Concrete preparation process is as follows:

[0047] (1) Weigh the nano-diamond according to the mass percentage of 2# in Table 1, vacuum-pack the nano-diamond in a quartz test tube, and put it into a high-temperature furnace that has been heated to 750 ° C. During the heating process, high-purity nitrogen gas has been introduced, and the temperature is kept for 2 Hours later, the temperature was lowered to 90° C. at a rate of 210° C. / hour, then the high-temperature furnace was closed, and the temperature was lowered ...

Embodiment 3

[0053] Embodiment 3: a kind of nano-diamond / germanate tellurite composite glass microsphere with NV color center;

[0054] A nano-diamond / germanate tellurite composite glass microsphere with an NV color center, the raw material composition is as shown in 3# in Table 1;

[0055] Under the pumping of a 532nm semiconductor laser, the nano-diamond raw material was tested, and the luminescence of the NV color center was not obtained at 500nm-800nm.

[0056] Concrete preparation process is as follows:

[0057] (1) Weigh the nano-diamond according to the mass percentage of 3# in Table 1, vacuum-pack the nano-diamond in a quartz test tube, and put it into a high-temperature furnace that has been heated to 750 ° C. During the heating process, high-purity nitrogen gas has been introduced and kept for 2 Hours later, the temperature was lowered to 90° C. at a rate of 220° C. / hour, then the high-temperature furnace was closed, and the temperature was lowered to room temperature. Under th...

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Abstract

The invention discloses nano-diamond/tellurium germanate glass microspheres with NV (Nitrogen Vacancy) center light emitting effect. A preparation method of the nano-diamond/tellurium germanate glassmicrospheres comprises steps as follows: (1), nano-diamond is subjected to high-temperature annealing treatment, and the NV center is obtained; (2), nano-diamond/tellurium germanate compound glass with the NV center is prepared from glass raw materials with a segmented melting method; (3), the compound glass is subjected to drawing, and glass fibers are obtained through drawing; (4), the glass fibers are subjected to thermal-insulation treatment, and the microspheres are obtained. The compound glass microspheres have quite small photo-induced refraction change and good optical stability, degree of eccentricity is smaller than 1%, and surface smoothness is smaller than 1 nm. The tellurium germinate glass doped with a denitration catalyst has low melting temperature and is high in transmittance when the light emitting range of the NV center is 500-800 nm, NV light intensity is high, the preparation method is simple, the cycle is short, besides, concentration of the doped nano-diamond ishigh, the glass microspheres are expected to be applied to NV center based quantum communication devices and various high-sensitivity physical quantity detectors, and integrated application of the glass microspheres can be possible.

Description

technical field [0001] The invention relates to a nano-diamond / germanate tellurate composite glass microsphere with NV color center luminescence and a preparation method thereof, which is expected to be applied to quantum communication devices based on NV color centers and various high-sensitivity physical quantity detectors. Background technique [0002] When a nitrogen atom replaces a carbon atom in diamond and captures a hole around it, a stable structure will be formed, called NV color center (Nitrogen Vacancy center). The NV color center has a stable energy level structure and can emit fluorescence. Compared with bulk diamond samples, nanodiamonds containing NV color centers have unique advantages in application. The luminescence of the NV color center in nanodiamond is extremely stable around 600-800nm, without photobleaching and light flickering, long coherence and relaxation time, excellent biocompatibility, small size, great flexibility, and can be combined with oth...

Claims

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Application Information

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IPC IPC(8): C03C12/00C03C14/00C03C6/06C03C4/12C03B5/235C03B19/10
Inventor 田颖井绪峰刘群获李兵朋黄飞飞李环环徐时清张军杰
Owner CHINA JILIANG UNIV
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