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Photoluminescent composite material and preparation method and application thereof

A technology of photoluminescence and composite materials, which is applied in the fields of luminescent materials, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., can solve the problems of complex operation, difficult operation, limited practical application, etc., and achieves simple operation and stable luminescence performance. , the effect of easy to scale up preparation

Inactive Publication Date: 2017-07-21
EAST CHINA NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, organic perovskite materials are very sensitive to humidity, solvents, UV and high temperature, which greatly limits their practical applications. In order to improve the stability of organic perovskite materials, organic perovskite materials can be modified on the surface (ACSNano ,2015,9,4533), supported in organic polymers (Adv.Mater.2016,28,9163) or porous inorganic carriers (J.Mater.Chem.C,2015,3,11286, NanoLett.2016,16 ,5866)
The existing preparation method is complex and difficult to operate. As described in the article (Adv.Mater.2016, 28, 9163), it is necessary to add the precursor solution of the organic perovskite to the organic polymer resin PVC, PS, PMMA, ABS And on the PC film, then let the N, N-dimethylformamide precursor solution enter the resin through swelling, and then evaporate the solution in a vacuum to form a photoluminescence organic perovskite film, and develop a stable performance The composite material of organic perovskite materials is the hot spot and difficulty in the research of organic perovskite materials

Method used

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  • Photoluminescent composite material and preparation method and application thereof
  • Photoluminescent composite material and preparation method and application thereof
  • Photoluminescent composite material and preparation method and application thereof

Examples

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Embodiment 1

[0049] The preparation of embodiment 1 perovskite nanoparticles

[0050] 0.37 g of PbBr 2 Dissolve in 1.9 g of DMF, stir and dissolve, add 0.21 g of octylamine and 0.17 g of methylamine bromide in sequence, and after complete dissolution, a perovskite precursor dispersion is obtained. Then, the precursor dispersion was dropped into 50 mL of acetone under vigorous stirring, and yellow-green perovskite nanoparticles were precipitated. The product was centrifuged at high speed to separate perovskite nanoparticles, and its fluorescence curve was as follows: Figure 5 As shown, it can be seen from the figure that its luminous wavelength is between 490-560 nanometers.

Embodiment 2

[0051] The preparation of embodiment 2 perovskite nanoparticles

[0052] Sequentially add 0.25 g of PbBr 2 and 0.11 g PbCl 2 Dissolve in 2.1 g of DMSO, stir and dissolve, then add 0.23 g of hexadecylamine and 0.18 g of methylamine bromide in sequence, and after complete dissolution, a perovskite precursor dispersion is obtained. Then, the precursor dispersion was dropped into 50 mL of acetonitrile under vigorous stirring, and yellow-green perovskite nanoparticles were precipitated. The product was centrifuged at high speed to separate perovskite nanoparticles, and its fluorescence curve was as follows: Image 6 As shown, it can be seen from the figure that its luminous wavelength is between 420-480 nanometers.

Embodiment 3

[0053] The preparation of embodiment 3 perovskite nanoparticles

[0054] Sequentially add 0.25 g of PbBr 2 and 0.09 g PbI 2 Dissolve in 2.1 g of diethylformamide, stir and dissolve, add 0.23 g of dodecylamine and 0.18 g of butylamine bromide in sequence, and after complete dissolution, a perovskite precursor dispersion is obtained. Then the precursor dispersion was dropped into 50 mL of toluene under vigorous stirring to precipitate brown perovskite nanoparticles. The product was centrifuged at high speed to separate perovskite nanoparticles, and its fluorescence curve was as follows: Figure 7 As shown, it can be seen from the figure that it has two emission peaks, which are 525 and 630 nanometers respectively.

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Abstract

The invention discloses a photoluminescent composite material and a preparation method and application thereof. The preparation method includes: adopting a diffusion method to prepare organic peroskite nanoparticles; mixing the organic peroskite nanoparticles with organosilicon resin to obtain the photoluminescent composite material. A photoluminescent thin film stable in property can be formed by coating the photoluminescent composite material to form a film and drying for curing the film. The preparation method is simple, and the photoluminescent thin film is stable in performance and has wide application range.

Description

technical field [0001] The invention relates to the field of preparation of photoluminescent composite materials, in particular to an organic perovskite fluorescent composite material and its preparation method and application. Background technique [0002] In recent years, organic perovskite materials have attracted extensive research interest due to their broad application prospects in solar photoelectric conversion, OLEDs, LEDs, and other fields. However, organic perovskite materials are very sensitive to humidity, solvents, UV and high temperature, which greatly limits their practical applications. In order to improve the stability of organic perovskite materials, organic perovskite materials can be modified on the surface (ACSNano ,2015,9,4533), supported in organic polymers (Adv.Mater.2016,28,9163) or porous inorganic carriers (J.Mater.Chem.C,2015,3,11286, NanoLett.2016,16 ,5866). The existing preparation method is complex and difficult to operate. As described in th...

Claims

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Application Information

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IPC IPC(8): C09K11/06C09K11/02C08J5/18C08L83/04C08L83/05C08L83/07C08K3/22H01L51/50
CPCC09K11/025C09K11/06C08J5/18C08K3/22C08K2003/2206C08K2003/2241C08K2201/011C08L2203/16C08J2383/04H10K85/40H10K50/11C08L83/04
Inventor 林和春田培王海陈少强彭晖褚君浩
Owner EAST CHINA NORMAL UNIVERSITY
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