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Bivalent manganese-doped full inorganic perovskite quantum dot glass as well as preparation method and application thereof

A technology of quantum dot glass and inorganic calcium, which is applied in glass manufacturing equipment, glass molding, chemical instruments and methods, etc., can solve the problems of poor heat resistance and light aging resistance, low luminous efficiency of powder, and limited application, etc., to achieve Low cost, uniform and stable product, and high chemical stability

Active Publication Date: 2018-08-21
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the all-inorganic perovskite quantum dots synthesized in the liquid phase have poor water resistance and low luminous efficiency of the powder. Compared with traditional organic packaging materials, there are problems such as poor heat resistance and light aging resistance after being made into devices. Limit its application in the field of optoelectronic materials

Method used

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  • Bivalent manganese-doped full inorganic perovskite quantum dot glass as well as preparation method and application thereof
  • Bivalent manganese-doped full inorganic perovskite quantum dot glass as well as preparation method and application thereof
  • Bivalent manganese-doped full inorganic perovskite quantum dot glass as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The molar percentage of the glass chemical composition of the present embodiment is: 30B 2 o 3 - 40SiO 2 - 5ZnO- 7Al 2 o 3 - 6Cs 2 CO 3 -4(Pb / Mn)Cl 2 - 4NaCl- 4MCO 3 , where M is Sr.

[0031] Table 1 Raw material composition of the all-inorganic perovskite quantum dot glass doped with divalent manganese in Example 1

[0032]

[0033] The mass of each compound shown in Table 1 can be obtained by calculating the molar percentage of the chemical composition in Example 1. Accurately weigh analytically pure boric acid (H 3 BO 3 ), silicon dioxide (SiO 2 ), alumina (Al 2 o 3 ), cesium carbonate (Cs 2 CO 3 ), lead chloride (PbCl 2 ), manganese chloride (MnCl 2 ), sodium chloride (NaCl), strontium carbonate (SrCO 3 ) zinc oxide (ZnO). Grind the precisely weighed raw material in an agate mortar for 1–2 h, transfer it to a corundum crucible, melt it at 1200°C for 30 min, pour the melt into a preheated graphite mold, and put it into a Annealed in the furnace...

Embodiment 2

[0035] The molar percentage of the glass chemical composition of the present embodiment is: 35B 2 o 3 - 35SiO 2 - 4ZnO- 7Al 2 o 3 - 6Cs 2 CO3 -4(Pb / Mn)Cl 2 - 4NaCl- 5MCO 3 , where M is Ca.

[0036] Table 2 Raw material composition of the all-inorganic perovskite quantum dot glass doped with divalent manganese in Example 2

[0037] raw material

[0038] Calculated according to the mole percentage of the chemical composition in Example 2, the mass of each compound as shown in Table 2 can be obtained. Accurately weigh analytically pure boric acid (H 3 BO 3 ), silicon dioxide (SiO 2 ), alumina (Al 2 o 3 ), cesium carbonate (Cs 2 CO 3 ), lead chloride (PbCl 2 ), manganese chloride (MnCl 2 ), sodium chloride (NaCl), calcium carbonate (CaCO 3 ) zinc oxide (ZnO). The precisely weighed raw materials were ground in an agate mortar for 1–2 h, then transferred to a corundum crucible, melted at 1300 °C for 30 min, and then poured into a preheated graphite mold f...

Embodiment 3

[0040] The mole percentage of the glass chemical composition of the present embodiment is: 34B 2 o 3 -38SiO 2 - 4ZnO- 5Al 2 o 3 - 6Cs 2 CO 3 -4(Pb / Mn)Cl 2 - 4NaCl- 5MCO 3 , where M is Sr.

[0041] Table 3 Raw material composition of all-inorganic perovskite quantum dot glass doped with divalent manganese in Example 3

[0042] raw material

[0043] The mass of each compound shown in Table 3 can be obtained by calculating the molar percentage of the chemical composition in Example 3. Accurately weigh analytically pure boric acid (H 3 BO 3 ), silicon dioxide (SiO 2 ), alumina (Al 2 o 3 ), cesium carbonate (Cs 2 CO 3 ), lead chloride (PbCl 2 ), manganese chloride (MnCl 2 ), sodium chloride (NaCl), strontium carbonate (SrCO 3 ) zinc oxide (ZnO). Grind the precisely weighed raw material in an agate mortar for 1–2 h, transfer it to a corundum crucible, melt it at 1250°C for 30 min, pour the melt into a preheated graphite mold, and put it into a Annealed ...

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Abstract

The invention discloses bivalent manganese-doped full inorganic perovskite quantum dot glass. The bivalent manganese-doped full inorganic perovskite quantum dot glass is prepared from 25 to 45 percentof B2O3, 25 to 45 percent of SiO2, 1 to 10 percent of MCO3, 1 to 10 percent of Al2O3, 1 to 5 percent of ZnO, 1 to 10 percent of Cs2CO3, 1 to 10 percent of PbCl2, 1 to 10 percent of NaCl and 1 to 10 percent of MnCl2, wherein M is Ca, Sr or Ba. The preparation method of the quantum dot glass comprises the following steps: grinding all raw material components of the glass and melting after uniform mixing; then carrying out compression molding on a melt, annealing and carrying out heat treatment, thus obtaining the bivalent manganese-doped full inorganic perovskite quantum dot glass by carrying out heat treatment with different temperatures. The quantum dot-doped glass prepared by the invention has the advantages of good chemical stability and higher fluorescence quantum efficiency, and is aluminescent material with a promising application prospect.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a divalent manganese-doped all-inorganic perovskite quantum dot glass ceramic and a preparation method and application thereof. Background technique [0002] All-inorganic perovskite quantum dots are very promising luminescent materials, among which CsPbX 3 (X is Cl, Br and I) because of its high fluorescence quantum efficiency (~90%), emission wavelength covering the entire visible spectrum (400~760 nm), relatively narrow half-peak width (12~42 nm), etc. merits have attracted much attention. However, the all-inorganic perovskite quantum dots synthesized in the liquid phase have poor water resistance and low luminous efficiency of the powder. Compared with traditional organic packaging materials, there are problems such as poor heat resistance and light aging resistance after being made into devices. This limits its application in the field of optoelectronic materials. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/066C03C3/093C03C4/12C03B19/02C03B32/02C09K11/66
CPCC03B19/02C03B32/02C03C3/066C03C3/093C03C4/12C09K11/665
Inventor 王静余金波曹鲁豫司帅晨
Owner SUN YAT SEN UNIV
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