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A polymer base functional film and a preparing method therefor

A polymer film and polymer technology, applied in coatings, photovoltaic power generation, electrical components, etc., can solve the problems of no natural products, etc., and achieve the effect of improving photoelectric performance, simple method, and wide range

Active Publication Date: 2018-10-19
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But few natural products (MgF 2 It is a natural material with the lowest refractive index available) that can meet people's needs for the use of low refractive index materials

Method used

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  • A polymer base functional film and a preparing method therefor
  • A polymer base functional film and a preparing method therefor
  • A polymer base functional film and a preparing method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) Dissolve the polymer in toluene, the mass ratio of polymer to toluene is 1:7, magnetically stir for 1h, 5000rpm / min high-speed stirring for 10min, ultrasonic for 1h, after the polymer is completely dissolved, a uniform and transparent polymerization is obtained solution in toluene. Disperse the nano-sacrificial template in toluene, the mass ratio of the nano-sacrificial template to toluene is 1:10, and sonicate for 2 hours to obtain a uniformly mixed toluene solution containing the nano-sacrificial template. Then with the mass ratio of the nano-sacrifice template in the solution that finally forms is the amount that the toluene solution of polymer and the toluene solution that contains nano-sacrifice template are mixed, obtain composite colloid solution (wherein the mass fraction of polymer is 15%) , wherein the nano sacrificial template is oily monodisperse cadmium selenide (CdSe) quantum dots (3-5nm), and the polymer is polydimethylsiloxane (PDMS).

[0070] (2) G...

Embodiment 2

[0073] (1) Dissolve the polymer in the organic solvent toluene, the mass ratio of the polymer to toluene is 1:7, stir magnetically for 1 hour, stir at a high speed of 5000rpm / min for 10 minutes, and sonicate for 1 hour. After the polymer is completely dissolved, a uniform and transparent The toluene solution of the polymer; dissolve the nano-sacrificial template in toluene, the mass ratio of the nano-sacrificial template to toluene is 1:10, and ultrasonicate for 2 hours to obtain a uniformly mixed toluene solution containing the nano-sacrificial template, and then use the final solution The mass ratio of the nano-sacrifice template is 1 wt%. The toluene solution of the polymer and the toluene solution containing the nano-sacrifice template are mixed to obtain a composite colloid solution (wherein the mass fraction of the polymer is 10%) as the first solution. Wherein, the nano sacrificial template is an oil-soluble monodisperse cadmium selenide (CdSe) quantum dot (3-5nm), and t...

Embodiment 3

[0081] (1) Dissolve the polymer in the organic solvent N,N-dimethylformamide (DMF), the mass ratio of the polymer to the organic solvent is 1:8, magnetic stirring for 1h, 5000rpm / min high-speed stirring for 10min, ultrasonication for 1h After the polymer is completely dissolved, a uniform and transparent polymer solution is obtained as the first solution; the polymer is polyacrylonitrile (PAN).

[0082] (2) Mix the inorganic halide salt and organic ammonium halide salt powder, wherein the molar ratio of inorganic halide salt:organic ammonium halide salt is 1:1.5, and then add N,N-dimethylformamide (DMF) The mass ratio of N,N-dimethylformamide (DMF) to inorganic halide salts is 1:0.09. After mixing, ultrasonic treatment is performed. After ultrasonic treatment for 15 minutes, a transparent mixed solution is obtained. Liquid is filtered, and the filtrate obtained by filtration is taken as the second solution; the inorganic halide salt described in this step is lead bromide (PbBr...

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Abstract

The invention provides a polymer base functional film and a preparing method therefor. The functional film includes at least one layer of a polymer film, and at least one layer of the polymer film isa polymer film containing a nanometer cavity. Nanometer-sacrificial templates of different geometric structures are added into a polymer solution and the nanometer-sacrificial templates are selectively removed after film formation, thus forming a nanometer cavity structure in the polymer film. The effective refractive index of the polymer film can be flexibly changed, the matching between the filmand a device is realized, and the optoelectronic properties of the application device components are improved.

Description

technical field [0001] The invention belongs to the technical field of optical thin films, and in particular relates to a polymer-based functional thin film with adjustable refractive index and a preparation method thereof. Background technique [0002] Optical thin films play a very important role in the development of optical technology. Optical thin films are used in most optoelectronic devices. Optical thin films can change the reflection, transmission and polarization characteristics of propagating light, so as to improve the performance of the light interaction interface of optoelectronic device components. When light is incident on the interface between two different refractive index media, Fresnel reflection will occur due to the difference in refractive index. This reflection phenomenon reduces the performance of many optoelectronic devices. For example, untreated monocrystalline silicon photovoltaic cells or silicon-based photodetectors lose 30% of their energy d...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08J7/04C08L83/04C08L33/12C08L33/20H01L31/055
CPCC08J5/18C08J2333/12C08J2333/20C08J2383/04C08J2439/06C08J7/0427H01L31/055Y02E10/52
Inventor 钟海政孟令海王雷
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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