Preparation method of force-electricity-light conversion enhanced luminous composite thin film

A composite film, light conversion technology, applied in chemical instruments and methods, luminescent materials, filament/wire forming, etc., can solve problems such as limited force and weak fluorescence emission, and achieve enhanced interaction force, enhanced luminous intensity, environmental protection, etc. Stability-enhancing effect

Active Publication Date: 2017-09-08
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (3), the force that the elastic stress luminescent material prepared in the prior art can withstand is limited;
[0007] (4) The problem that the stress luminescent material cannot be continuously distributed in the organic matrix and the force it receives is weak, and the fluorescent light is weak

Method used

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  • Preparation method of force-electricity-light conversion enhanced luminous composite thin film
  • Preparation method of force-electricity-light conversion enhanced luminous composite thin film
  • Preparation method of force-electricity-light conversion enhanced luminous composite thin film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A method for preparing a force-electricity-light conversion enhanced luminescent composite film, the specific steps are as follows:

[0054] (1) 0.5mol / L of Sr(NO 3 ) 2 and Al(NO 3 ) 3 , 0.02mol / L of Eu(NO 3 ) 3 and Dy(NO 3 ) 3 Stoichiometric ratio Sr 0.97 Al 2 o 4 :Eu 2+ 0.01 , Dy 3+ 0.02 (abbreviated as SAOE) into the beaker and stir evenly, add precipitant urea, dispersant ethylene glycol, surfactant CTAB for ultrasonic dispersion, and transfer the ultrasonically dispersed solution into a stainless steel reaction kettle with polytetrafluoroethylene at 145 Under the temperature condition of ℃, carry out hydrothermal reaction, centrifuge and dry after reacting for 24 hours to obtain the precursor powder;

[0055] (2) Put the precursor powder into the 2 In a tube furnace with a reducing atmosphere of 5% argon by volume, the tube furnace operates at 5°C min -1 Burn at 1300°C for 4 hours at a heating rate to obtain spherical Sr 0.97 Al 2 o 4 :Eu 2+ 0....

Embodiment 2

[0062] A method for preparing a force-electricity-light conversion enhanced luminescent composite film, the specific steps are as follows:

[0063] (1) 0.5mol / L of Sr(NO 3 ) 2 and Al(NO 3 ) 3 , 0.02mol / L of Eu(NO 3 ) 3 and Dy(NO 3 ) 3 Stoichiometric ratio Sr 0.97 Al 2 o 4 :Eu 2+ 0.01 , Dy 3+ 0.02 (abbreviated as SAOE) into the beaker and stir evenly, add precipitant urea, dispersant ethylene glycol, surfactant CTAB for ultrasonic dispersion, and transfer the ultrasonically dispersed solution into a stainless steel reaction kettle with polytetrafluoroethylene at 145 Under the temperature condition of ℃, carry out the hydrothermal reaction, and react for 24 hours, centrifuge and dry to obtain the precursor powder;

[0064] (2) Put the precursor powder into the 2 In a tube furnace with a reducing atmosphere of 5% argon by volume, the tube furnace operates at 5°C min -1Burn at 1300°C for 4 hours at a heating rate to obtain spherical Sr 0.97 Al 2 o 4 :Eu 2+ 0.0...

Embodiment 3

[0069] A method for preparing a force-electricity-light conversion enhanced luminescent composite film, the specific steps are as follows:

[0070] (1) Burn 0.5mol / L of Sr(NO 3 ) 2 and Al(NO 3 ) 3 , 0.02mol / L of Eu(NO 3 ) 3 and Dy(NO 3 ) 3 Stoichiometric ratio Sr 0.97 Al 2 o 4 :Eu 2+ 0.01 , Dy 3+ 0.02 (abbreviated as SAOE) into the beaker and stir evenly, add the combustion agent triethylamine, put the ultrasonically dispersed solution into the muffle furnace and heat it to 300 ° C for 40 minutes, and then continue to burn in the muffle furnace at 700 ° C Under oxidation treatment for 3 hours, the precursor powder was obtained;

[0071] (2) Put the precursor powder into the 2 In a tube furnace with a reducing atmosphere of 5% argon by volume, the tube furnace operates at 5°C min -1 Burn at 1300°C for 4 hours at a heating rate to obtain flaky Sr 0.97 Al 2 o 4 :Eu 2+ 0.01 , Dy 3+ 0.02 (abbreviated as SAOED);

[0072] (3) Add 0.01g / mL ethanol solution of d...

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Abstract

The invention relates to a preparation method of a force-electricity-light conversion enhanced luminous composite thin film, and belongs to the technical field of material physics. The preparation method comprises the following steps: firstly preparing luminous materials with different topographic elastic stresses, performing surface modification on the luminous materials, dispersing the luminous materials in a piezoelectric organic matrix, and finally preparing the composite thin film. According to the preparation method, by control over the anisotropy of the growth morphology, a micro-nano stress luminous material with enhanced flexible-electric and photoelectric effect is obtained; by taking an organic piezoelectric material as a matrix, the flexibility is improved; by surface modification for inorganic particles to wrap a layer of macromolecules or polymers, a core-shell structure is formed, so that the compatibility between an inorganic matter and the organic matrix is improved, and the luminous intensity is enhanced; furthermore, a highly oriented composite fiber thin film is prepared through an electrostatic spinning, so that the stress intensity of the composite material is enhanced, and the luminous intensity is enhanced.

Description

technical field [0001] The invention belongs to the technical field of material physics, and more specifically relates to a method for preparing a force-electricity-light conversion enhanced luminescent composite thin film. Background technique [0002] In recent years, with the development of new elastic stress luminescent materials, the improvement of stress luminescence efficiency and the improvement of detection technology sensitivity requirements, as well as the application of elastic stress luminescence in biological imaging, stress luminescence materials are used in stress damage detection. , stress distribution image visualization, biosensing and bioimaging have attracted worldwide attention. [0003] SrAl currently developed and publicly available 2 o 4 :Eu 2+ (Dy 3+ ,Nd 3+ ), ZnS:Mn 2+ , Ca 2 Al 2 SiO 7 : Ce 3+ , BaTiO 3 -CaTiO 3 :Pr 3+ and SrMg 2 (PO 4 ) 2 :Eu 2+ etc. In order to realize the practical application of elastic stress luminescent mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L27/16C08K9/04C08K7/18C08J5/18C08K7/00C09K11/02C09K11/64D04H1/728D01D5/00
CPCC09K11/025C09K11/7792D01D5/0015D04H1/728C08K5/18C08K7/00C08K7/18C08K9/04C08K9/08C08J2327/16C08L27/16
Inventor 黄程张珊珊黄维
Owner NANJING UNIV OF TECH
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