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Preparation method and application of near-infrared perovskite quantum dot glass

A quantum dot glass, perovskite technology, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of single spectrum, non-adjustable light conversion efficiency, low light conversion efficiency, etc., and achieve high visible light transmittance, excellent light Conversion performance, the effect of ensuring color purity

Active Publication Date: 2020-12-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of low light conversion efficiency and single and unadjustable spectrum of existing near-infrared fluorescent materials excited by red light, the present invention provides a preparation method and application of near-infrared perovskite quantum dot glass, CsPbI 3 :Pr 3+ Quantum dot glass has strong red light conversion efficiency and excellent quantum efficiency, while Pr 3+ The doping can effectively adjust the peak position of emitting near-infrared light, and the Pr 3+ Doped CsPbI 3 Quantum dot glass made into high-efficiency, high-stability LED lights for plant growth

Method used

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  • Preparation method and application of near-infrared perovskite quantum dot glass
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  • Preparation method and application of near-infrared perovskite quantum dot glass

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Effect test

Embodiment 1

[0025] Embodiment 1: A method for preparing near-infrared perovskite quantum dots excited by red light, the specific steps are as follows:

[0026] (1) High-purity B 2 o 3 , SiO 2 , ZnO, SrCO 3 、Cs 2 CO 3 , PbI 2 , NaI and Pr 2 o 3 Grind to obtain mixed powder; where B 2 o 3 , SiO 2 , ZnO and SrCO 3 is a glass matrix, Cs 2 CO 3 , PbI 2 , NaI is the microcrystalline material, with B 2 o 3 , SiO 2 , ZnO, SrCO 3 、Cs 2 CO 3 , PbI 2 , The total molar amount of NaI is 100%, and B in the mixed powder 2 o 3 30%, SiO 2 32%, ZnO 12%, SrCO 3 7%, Cs 2 CO 3 11%, PbI 2 3% and NaI 5%;

[0027](2) Place the mixed powder in step (1) at a temperature of 1150°C in an air atmosphere to melt at high temperature for 20 minutes, pour it onto a preheated 450°C copper plate, cool and form it to obtain a precursor glass;

[0028] (3) The precursor glass in step (2) is subjected to high-temperature stress relief treatment and high-temperature heat treatment in sequence to ob...

Embodiment 2

[0030] Embodiment 2: a kind of preparation method of all-inorganic perovskite quantum dot glass, concrete steps are as follows:

[0031] (1) High-purity B 2 o 3 , SiO 2 , ZnO, SrCO 3 、Cs 2 CO 3 , PbI 2 , NaI and Pr 2 o 3 Grind to obtain mixed powder; where B 2 o 3 , SiO 2 , ZnO and SrCO 3 is a glass matrix, Cs 2 CO 3 , PbI 2 , NaI and Pr 2 o 3 is a microcrystalline material, with B 2 o 3 , SiO 2 , ZnO, SrCO 3 、Cs 2 CO 3 , PbI 2 , The total molar amount of NaI is 100%, and B in the mixed powder 2 o 3 32%, SiO 2 35%, ZnO 10%, SrCO 3 5%, Cs 2 CO 3 9%, PbI 2 3% and NaI 6%, Pr 2 o 3 (1.0%);

[0032] (2) Place the mixed powder in step (1) at a temperature of 1250°C in an air atmosphere to melt at high temperature for 10 minutes, pour it onto a preheated 450°C copper plate, cool and form it to obtain a precursor glass;

[0033] (3) The precursor glass in step (2) is subjected to high-temperature stress relief treatment and high-temperature heat treatm...

Embodiment 3

[0035] Embodiment 3: a kind of preparation method of all-inorganic perovskite quantum dot glass, concrete steps are as follows:

[0036] (1) High-purity B 2 o 3 , SiO 2 , ZnO, SrCO 3 、Cs 2 CO 3 , PbI 2 , NaI and Pr 2 o 3 Grind to obtain mixed powder; where B 2 o 3 , SiO 2 , ZnO and SrCO 3 is a glass matrix, Cs 2 CO 3 , PbI 2 , NaI and Pr 2 o 3 is a microcrystalline material, with B 2 o 3 , SiO 2 , ZnO, SrCO 3 、Cs 2 CO 3 , PbI 2 , The total molar amount of NaI is 100%, and B in the mixed powder 2 o 3 32%, SiO 2 35%, ZnO 10%, SrCO 3 5%, Cs 2 CO 3 9%, PbI 2 3% and NaI 6%, Pr 2 o 3 2.0%;

[0037] (2) Place the mixed powder in step (1) at a temperature of 1200°C in an air atmosphere to melt at high temperature for 15 minutes, pour it onto a preheated 450°C copper plate, cool and form it to obtain a precursor glass;

[0038] (3) The precursor glass in step (2) is subjected to high-temperature stress relief treatment and high-temperature heat treatmen...

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Abstract

The invention relates to a preparation method and application of near-infrared perovskite quantum dot glass, and belongs to the technical field of optical glass preparation. The preparation method comprises the steps: placing mixed powder of high-purity B2O3, SiO2, ZnO, SrCO3, Cs2CO3, PbI2, NaI and Pr4O7 in an air atmosphere at the temperature of 1150-1250 DEG C for high-temperature melting for 8-20 minutes, pouring, cooling and molding to obtain precursor glass, and sequentially carrying out high-temperature destressing treatment and high-temperature heat treatment on the precursor glass to obtain the full-inorganic perovskite CsPbI3:Pr<3+> quantum dot glass. The CsPbI3:Pr<3+> quantum dot glass has excellent near-infrared emission characteristics under red light excitation, and can be used for plants and other lighting facilities requiring near-infrared coupling of red light.

Description

technical field [0001] The invention relates to a preparation method and application of a near-infrared perovskite quantum dot glass, belonging to the technical field of optical glass preparation. Background technique [0002] Light plays a key role in the process of plant growth, in which the basic light requirements of red light (600-680nm) and far-red light (FR, 680-780nm) regions are responsible for photosynthesis, phototropism and photomorphic formation, respectively, where red Basic light requirements in the light (600-680nm) and far-red (FR, 680-780nm) regions are responsible for photosynthesis, phototropism and photomorphogenesis, respectively. Red light matches well with the absorption spectra of the dominant photosynthetic pigments chlorophyll and carotenoids, while red / far-red light is mainly absorbed by photosensitive cell phytochrome proteins, and through photoreceptor cells, the photosensitive intensity, photosensitive quality, photosensitive direction and phot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16C03C6/04C03C6/06C03B19/02C03B32/02H01L33/50
CPCC03C10/16C03C1/00C03B19/02C03B32/02H01L33/502
Inventor 徐旭辉章皓余雪杨玺张明宇马宏卿邱建备
Owner KUNMING UNIV OF SCI & TECH
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