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Preparation method of photonic crystal with inverse opal structure

An anti-opal structure and photonic crystal technology, applied in crystal growth, chemical instruments and methods, single crystal growth, etc., can solve the problems that colloids are difficult to fill gaps, opal structures are easy to fall off and destroy, and consume a lot of manpower, material resources and financial resources. , to achieve the effect of low cost, simple method and convenient operation

Active Publication Date: 2013-10-16
ADVANCED TECHNOLOGY & MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: First, due to the small voids of opal, it is difficult for the colloid to be filled to completely fill the voids, resulting in some defects; second, during the immersion process, the opal structure is easy to fall off and be damaged.
Although high-quality, defect-free inverse opal photonic crystals can be obtained using layer-by-layer vapor deposition methods (such as atomic layer deposition), this process requires a lot of manpower, material and financial resources, and also requires high-quality opal templates

Method used

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  • Preparation method of photonic crystal with inverse opal structure
  • Preparation method of photonic crystal with inverse opal structure
  • Preparation method of photonic crystal with inverse opal structure

Examples

Experimental program
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Embodiment

[0034] Take 0.1 ml of 10% polystyrene microsphere suspoemulsion (weight percent, particle size: 330nm) and 0.05 ml of 10% TEOS aqueous solution (weight percent, expressed as SiO 2 Measure) into a 4ml cuvette, and add three milliliters of mill-Q water to the above cuvette, ultrasonically disperse for 10 minutes, and mix the above solution evenly. Then put a piece of clean glass substrate vertically into the above-mentioned cuvette. Put the cuvette on the heating stage, under the condition of 75 ℃, polystyrene microsphere template and SiO 2 The colloidal matrix was assembled and grown together on the glass substrate, kept warm for 48 hours, and taken out to obtain polystyrene microspheres and SiO 2 Colloidal composite structure. Put the above composite structure on a high-temperature heating table, heat it in air at 375 °C for 10 hours, and then take it out, thus obtaining high-quality, defect-free SiO 2 Inverse opal structure.

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Abstract

The invention discloses a preparation method of a photonic crystal with an inverse opal structure, and belongs to the technical field of the photonic crystal with the inverse opal structure. The preparation method comprises the following technological steps of: firstly adding polymeric microspheres to colloidal sol in proportions, and then dispersing the mixture for 10-60 minutes by using ultrasonic waves so as to form a uniform stable suspension emulsion; transferring the prepared suspended emulsion to a glass container, and vertically placing a clean substrate in the glass container filled with the suspended emulsion; then slantwise placing the glass container on a heating platform, and heating so as to volatilize a solvent; utilizing a binary synergistic effect for ensuring that polymeric microspheres and the colloidal sol grow on the substrate in a self-organizing manner to form a polymer; after ending growth, taking out a sample, and heating in air under an appropriate temperature condition so as to decompose and volatize the polymer; cooling and taking the sample to obtain the photonic crystal with the inverse opal structure, which has good degree of crystallinity and no defects and is large in area.

Description

technical field [0001] The invention belongs to the technical field of photonic crystals with inverse opal structures, and in particular provides a method for preparing photonic crystals with inverse opal structures, which can prepare large-area, defect-free photonic crystals with inverse opal structures. Background technique [0002] Photonic crystals are structures in which dielectric materials with different dielectric constants are arranged periodically in space. Similar to the behavior of electrons in semiconductor crystals, when photons propagate in photonic crystals, electromagnetic waves of the same magnitude as the periodic arrangement of the medium are relatively strongly scattered by the periodically arranged inhomogeneous medium, making electrons in this wavelength range Waves are prohibited from propagating in the photonic crystal to create a photonic band gap. In addition, photonic crystals also have the characteristics of suppressing spontaneous emission and ...

Claims

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Application Information

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IPC IPC(8): C30B29/58
Inventor 闫东伟武英周少雄
Owner ADVANCED TECHNOLOGY & MATERIALS CO LTD
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