A kind of quantum dot glass phosphor and its preparation method and application

A technology of quantum dot glass and fluorescent powder, which is applied in the field of quantum dot glass fluorescent powder and its preparation, achieving the effects of wide application prospects, good high-temperature luminous stability, and simple preparation process

Active Publication Date: 2018-04-06
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process of combining quantum dot glass with existing packaging technology for the preparation of optoelectronic devices has not yet been realized, so quantum dot glass has not yet been used in large-scale practical applications

Method used

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  • A kind of quantum dot glass phosphor and its preparation method and application
  • A kind of quantum dot glass phosphor and its preparation method and application
  • A kind of quantum dot glass phosphor and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] CdSO 4 ·8H 2 O was dissolved in distilled water, and thioacetamide (TAA) was added dropwise while stirring magnetically. Sonication was performed for 40 minutes after adjustment to pH 12. Drop absolute ethanol into the above solution to produce a yellow flocculent precipitate, and the powder is dissolved in distilled water again after centrifugation. will contain Zn(NO 3 ) 2 ·6H 2 The hot distilled aqueous solution of O and the TAA solution were dropped into the above mixed solution successively. After ultrasonication for 40 minutes, the mixed solution was centrifuged and vacuum-dried at 60° C. to obtain CdS / ZnS quantum dot powder.

[0035] Take polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer (P123) and dissolve it in dilute hydrochloric acid solution, transfer it to a three-necked flask, and place it in an oil bath at 40°C. After a period of time, tetraethyl orthosilicate solution was added dropwise to continue the reaction. The mixed soluti...

Embodiment 2

[0039] Cd(OAc) 2 2H 2 O added containing Na 2 S·9H 2 O in distilled water, magnetically stirred for 12 h, then transferred to a reaction kettle, and reacted at 90° C. for 6 h. Centrifuge the mixed solution and dry it under vacuum at 60°C to obtain CdS quantum dot powder.

[0040] Take polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer (P123) and dissolve it in dilute hydrochloric acid solution, transfer it to a three-necked flask, and place it in an oil bath at 40°C. After a period of time, tetraethyl orthosilicate solution was added dropwise to continue the reaction. The mixed solution was transferred to a reaction kettle, and hydrothermally reacted at 130° C. for 72 hours. After suction filtration and natural air-drying, the white powder was placed in a muffle furnace to heat remove the organic template agent. The specific sintering system was as follows: the heating rate was 1°C / min, the maximum temperature was 550°C, and the temperature was kept for 1...

Embodiment 3

[0044] AgNO 3 , In(NO 3 ) 3 ·H 2 O. Formamide (FA) was sequentially added into the three-necked flask according to a certain molar ratio, and the temperature was raised to 70° C. under the protection of nitrogen with magnetic stirring. After 15 minutes of reaction will contain (NH 4 ) 2 The FA solution of S was added dropwise to the above solution, reacted for 15 minutes and gradually cooled. Directly centrifuge to obtain supernatant, then add absolute ethanol and then centrifuge to obtain AgInS quantum dots.

[0045] Take polyoxyethylene-polyoxypropylene-polyoxyethylene triblock copolymer (P123) and dissolve it in dilute hydrochloric acid solution, transfer it to a three-necked flask, and place it in an oil bath at 40°C. After a period of time, tetraethyl orthosilicate solution was added dropwise to continue the reaction. The mixed solution was transferred to a reaction kettle, and hydrothermally reacted at 130° C. for 72 hours. After suction filtration and natural ai...

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Abstract

The invention relates to quantum dot glass phosphor powder as well as a preparation method and application thereof. The quantum dot glass phosphor powder is prepared from the following raw materials in percentage by weight: 1%-15% of a quantum dot material and 85%-99% of a silicon-based mesoporous material. The preparation method is as follows: sintering the quantum dot material and the silicon-based mesoporous material. The quantum dot glass phosphor powder is applied to a white-light LED (light-emitting diode) apparatus, an LED display, an LED backlight source, a signal indicator and an indicator for illumination. The quantum dot glass phosphor powder with different luminous intensities and transmittance is obtained by adjusting the quantum dot doping concentration; and the quantum dot glass phosphor powder with different luminous positions is obtained by adjusting the reaction conditions and selecting different single-quantum dot or core-shell quantum dot materials. The matrix material provided by the invention is quartz glass, and has good heat stability; the luminescence property of the quantum dot can be well kept; the high-temperature luminous efficiency of the quantum dot can be ensured; and meanwhile, the quantum dot glass phosphor powder is simple in preparation technology, energy-saving and environmentally friendly, so that the quantum dot glass phosphor powder has a good application prospect.

Description

technical field [0001] The invention belongs to the field of quantum dot materials and their preparation and application, in particular to a quantum dot glass fluorescent powder and its preparation method and application. Background technique [0002] In recent years, with the global energy crisis and the gradual enhancement of people's awareness of energy conservation and environmental protection, light-emitting diodes (LEDs) are gradually replacing traditional lighting materials and becoming a new generation of lighting sources due to their advantages such as low energy consumption, low heat production, and long life. At present, white LEDs are mainly realized in three types: 1) using red, green, and blue LEDs to combine light, that is, multi-chip white LEDs; 2) using blue LED chips and yellow phosphors, which are obtained by complementing blue and yellow colors White light, or use a blue LED chip with red and green phosphors, and mix the blue light emitted by the chip, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C4/12
Inventor 王连军周蓓莹顾士甲刘升刘原杨丰桕
Owner DONGHUA UNIV
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