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Perovskite/polymer composite luminescent material and preparation method thereof

A technology of luminescent materials and polymers, applied in the directions of luminescent materials, chemical instruments and methods, optics, etc., can solve problems such as inapplicability in the field of luminescence, and achieve the effects of easy adjustment of void size, high luminous intensity and low cost

Active Publication Date: 2015-08-26
ZHIJING NANOTECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the limitation of alumina template, this material is not suitable for the field of luminescence

Method used

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  • Perovskite/polymer composite luminescent material and preparation method thereof
  • Perovskite/polymer composite luminescent material and preparation method thereof
  • Perovskite/polymer composite luminescent material and preparation method thereof

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preparation example Construction

[0031] The preparation method of the perovskite / polymer composite luminescent material of the present invention comprises the following steps:

[0032] (1) Dissolve the polymer in an organic solvent, control the mass ratio of the polymer to the organic solvent to 1: (1-50), and mix ultrasonically for 12 hours. After the polymer is completely dissolved, a uniform and viscous polymer solution is obtained. , adding additives to the polymer solution, controlling the mass ratio: polymer: additive = 1: (0-0.5), ultrasonically mixing for 1-3 hours, and mixing uniformly to obtain the first solution; the organic solvent is N, N-dimethylformamide (DMF), dimethyl sulfoxide (DMSO), trimethyl phosphate (TMP), triethyl phosphate (TEP), N-methylpyrrolidone (NMP) or dimethyl ethyl Any one of amides (DMAc), and the additive is any one of polyvinylpyrrolidone (PVP) or polyethylene glycol (PEG);

[0033] (2) mix inorganic halide salt with organic ammonium halide salt powder, control molar ratio...

Embodiment 1

[0040] (1) The polymer is dissolved in an organic solvent, and the mass ratio is controlled to be: polymer: organic solvent=1:5, ultrasonically mixed for 12 hours, and after the polymer is completely dissolved, a uniform and viscous polymer solution is obtained, which is prepared in the above-mentioned Add additives to the polymer solution, and control the mass percentage concentration to be: polymer solution: additive = 1:0, ultrasonically mix for 1 h, mix evenly, and the obtained solution is used as the first solution. The polymer is polyvinyl acetate (PVAc); the organic solvent is N,N-dimethylformamide (DMF).

[0041] (2) mix the inorganic halide salt with the organic ammonium halide salt powder, the control molar ratio is: inorganic halide salt:organic ammonium halide salt=1:1, then add the organic solvent, the control mass ratio is: organic solvent:inorganic halide Compound salt=1:0.01, after mixing, ultrasonic treatment was carried out, and after ultrasonic treatment for...

Embodiment 2

[0045] (1) The polymer is dissolved in an organic solvent, and the mass ratio is controlled to be: polymer: organic solvent=1:10, ultrasonically mixed for 12 hours, and after the polymer is completely dissolved, a uniform and viscous polymer solution is obtained, which is prepared in the above-mentioned Add additives to the polymer solution, control the mass ratio: polymer solution: additive = 1:0.1, ultrasonically mix for 2 hours, mix evenly, and the obtained solution is used as the first solution. The polymer is cellulose acetate (CA); the additive is polyvinylpyrrolidone (PVP); the organic solvent is dimethylsulfoxide (DMSO).

[0046] (2) mix the inorganic halide salt with the organic ammonium halide salt powder, the control molar ratio is: inorganic halide salt:organic ammonium halide salt=1:1.5, then add the organic solvent, the control mass ratio is: organic solvent:inorganic halogenated Compound salt=1:(0.02), carry out sonication after mixing, after 15 minutes of sonic...

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Abstract

The invention relates to a perovskite / polymer composite luminescent material and a preparation method thereof, which belong to the technical field of composite materials and luminescent materials, wherein the structural formula of the perovskite is R1NH3AB3 or (R2NH3)2AB4, A and B form a ligand octahedral structure, R1NH3 or R2NH3 are filled into gaps of the ligand octahedral structure which is formed through the A and the B, R1 is methyl, R2 is a long-chain organic molecular group, the A is any one of metal Ge, Sn, Pb, Cu, Mn, Sb and Bi, the B is any one of Cl, Br and I. The perovskite / polymer composite luminescent material which is made through the preparation method is high in luminescent intensity, high in luminescent color purity, excellent in light and thermal stability and excellent chemical resistant property and mechanical property, and lays the foundation for theory research and application of the perovskite / polymer composite luminescent material in high-performance photoluminescence devices, flexible display, lasers, nonlinear optical devices. The preparation method can obtain composite materials which can cover a whole visible region through luminescent wavelengths, and has wide application prospect in the fields of wide gamut light emitting diode (LED) and high performance displays and the like.

Description

technical field [0001] The invention relates to a perovskite / polymer composite luminescent material and a preparation method thereof, belonging to the technical field of composite material and luminescent material preparation. Background technique [0002] Perovskite originally refers to a type of ceramic oxide. In 1839, German mineralogist Gustav Ross found this type of rock sample on the Ural Mountains in central Russia. The main component is titanium present in perovskite. Calcium acid (CaTiO3) compound, hence the name. In crystallography, it is referred to as the ratio of each compound in its molecular formula (1:1:3), so it is also called "113 structure". The general structure of an ideal perovskite is ABX 3 , where A can be K + 、Na + , Pb 2+ 、Ba 2+ More than 20 kinds of elements, B can be Cr 3+ , Nb 5+ 、Zr 4+ More than 50 elements such as X can be composed of O, Cl, Br, I, S and other anions. The central metal cation B and the anion X form a coordination octa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/06C09K11/66B82Y20/00
CPCB82Y20/00C09K11/06C09K11/75C09K11/025Y02E10/549C09K2211/188H10K71/12H10K85/30H10K77/111H10K50/115H10K50/865H10K2102/311H10K85/50C09K11/02C09K11/664C09K11/665H10K59/00H10K50/11H10K50/125H10K2102/00H10K2102/351H10N30/852G02F1/133617
Inventor 钟海政周青超张峰
Owner ZHIJING NANOTECH CO LTD
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