Formula, preparation method and application of CsPbBr3: xDy < 3 + > quantum dot glass

A quantum dot glass and quantum dot technology, which are used in glass manufacturing equipment, glass molding, chemical instruments and methods, etc., can solve the problems of low crystallinity and unfriendly environment of quantum dots, achieve uniform particle size and improve crystallinity. , the effect of improving stability

Active Publication Date: 2021-12-24
SHANGHAI INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of this invention is to provide a kind of CsPbBr 3 :xDy 3+ The formula, preparation method and application of quantum dot glass, to solve the CsPbBr mentioned in the background technology 3 The low crystallinity of quantum dots in glass matrix and the technical problem that the use of excess lead source is not environmentally friendly

Method used

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  • Formula, preparation method and application of CsPbBr3: xDy &lt; 3 + &gt; quantum dot glass
  • Formula, preparation method and application of CsPbBr3: xDy &lt; 3 + &gt; quantum dot glass
  • Formula, preparation method and application of CsPbBr3: xDy &lt; 3 + &gt; quantum dot glass

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Embodiment 1

[0037] The raw material purity used for the following implementation of the present invention is as follows:

[0038] Sodium carbonate (≥99.5%), barium titanate (99%), silicon dioxide (99.5%), zinc oxide (99%), boric acid (≥99.5%), dysprosium oxide (≥99%), cesium carbonate (99.99%) %), lead oxide (≥99%), sodium bromide (99%). Glass matrix according to molar mass 5Na 2 CO 3 -20ZnO-80H 3 BO 3 -15SiO2 2 -10BaCO 3 Proportioning; doping materials according to molar mass xDy 2 o 3 (x=0.3mol%) for proportioning; the quantum dot raw material is according to the molar mass of 1.5Cs 2 CO 3 -3PbO-9NaBr (mol%) for proportioning.

[0039] Prepare a CsPbBr as follows 3 :xDy 3+ Quantum dot glass:

[0040] (1) Weigh the raw materials according to the above molar mass, then add them to the agate grinding pot in batches, and fully grind them with a grinding rod.

[0041] (2) Transfer the fully ground raw material from the agate grinding pot to a corundum crucible, and then put the...

Embodiment 2

[0048] The raw material purity used for the following implementation of the present invention is as follows:

[0049] Sodium carbonate (≥99.5%), barium titanate (99%), silicon dioxide (99.5%), zinc oxide (99%), boric acid (≥99.5%), dysprosium oxide (≥99%), cesium carbonate (99.99%) %), lead oxide (≥99%), sodium bromide (99%). Glass matrix according to molar mass 5Na 2 CO 3 -20ZnO-80H 3 BO 3 -15SiO2 2 -10BaCO 3 Proportioning; doping materials according to molar mass xDy 2 o 3 (x=0.5mol%) for proportioning; the quantum dot raw material is according to the molar mass of 1.5Cs 2 CO 3 -3PbO-9NaBr (mol%) for proportioning.

[0050] Prepare a CsPbBr as follows 3 :xDy 3+ Quantum dot glass:

[0051] (1) Weigh the raw materials according to the above molar mass, then add them to the agate grinding pot in batches, and fully grind them with a grinding rod.

[0052] (2) Transfer the fully ground raw material from the agate grinding pot to a corundum crucible, and then put the...

Embodiment 3

[0059] The raw material purity used for the following implementation of the present invention is as follows:

[0060] Glass matrix according to molar mass 5Na 2 CO 3 -20ZnO-80H 3 BO 3 -15SiO2 2 -10BaCO 3 Proportioning; doping materials according to molar mass xDy 2 o 3 (x=0.7mol%) for proportioning; the quantum dot raw material is 1.5Cs according to the molar mass 2 CO 3 -3PbO-9NaBr (mol%) for proportioning. The glue uses A / B glue, the ratio of A component and B component is 1:1, and the red commercial phosphor with emission wavelength of 630nm is used, and the red commercial phosphor and CsPbBr 3 :xDy 3+ The ratio of quantum dot glass powder is 1:3. A blue light chip with an emission wavelength of 450nm is used, and the rated power of the blue light chip is 1W.

[0061] Prepare a CsPbBr as follows 3 :xDy 3+ Quantum dot glass, and package it into a white LED device:

[0062] (1) Weigh the raw materials according to the above molar mass, then add them to the agat...

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Abstract

The invention discloses a formula, a preparation method and application of CsPbBr3: xDy < 3 + > quantum dot glass. A glass matrix and a doping material are matched according to the molar mass of 5-10 mol% of Na2CO3, 20-30 mol% of ZnO, 80-100 mol% of H3BO3, 15-30 mol% of SiO2, 10-30 mol% of BaCO3 and x Dy2O3 (x=0 mol%, 0.1 mol%, 0.3 mol%, 0.5 mol%, 0.7 mol% and 0.9 mol%); the preparation method comprises the following steps: proportioning quantum dot raw materials according to the molar mass of 1.5-3% of Cs2CO3, 3-6% of PbO, 9-18% of NaBr (mol%), fully grinding the weighed raw materials, drying the ground raw materials, carrying out high-temperature sintering to obtain precursor glass, and carrying out internal stress elimination and heat treatment on the precursor glass to finally obtain the CsPbBr3: xDy < 3 + > quantum dot glass, and using the CsPbBr3: xDy < 3 + > quantum dot glass for preparing a white light LED device. Dy2O3 is used for doping for the first time, the CsPbBr3: xDy < 3 + > quantum dot glass is prepared, the white light LED device is prepared, the luminous efficiency of the CsPbBr3: xDy < 3 + > quantum dot glass can be effectively improved, use of a lead source is reduced, and the CsPbBr3: xDy < 3 + > quantum dot glass is a luminescent material which is high in stability, high in crystallinity and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of semiconductor luminescent materials, in particular to a CsPbBr 3 :xDy 3+ Formula, preparation method and application of quantum dot glass. Background technique [0002] In recent years, the all-inorganic cesium lead halide CsPbX 3 (X=Cl,Br,I) perovskite quantum dots (QDs) have attracted extensive attention due to their excellent optical properties such as tunable emission wavelength, strong light absorption ability, high carrier mobility, and low well density. Furthermore, CsPbX can be tuned by the anion exchange reaction of halides 3 The emission wavelength of quantum dots, so as to realize the full spectrum emission of visible light. Based on this, it shows broad application prospects in optoelectronic fields such as light-emitting diodes, photodetectors, lasers, and solar cells. However, since CsPbX 3 The ionic properties and large surface energy of quantum dots seriously affect their long-term s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C14/00C03C12/00C03B19/10C03B19/02C09K11/77H01L33/50
CPCC03C14/006C03C12/00C03B19/02C03B19/1005C09K11/77H01L33/502H01L33/504Y02B20/00
Inventor 朱雨轩邹军石明明杨波波
Owner SHANGHAI INST OF TECH
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