All-organic one-dimensional photonic crystal based on surface plasma effect and preparation method thereof

A technology of surface plasmons and dimensional photonic crystals, applied in crystal growth, chemical instruments and methods, optics, etc., can solve the problems of expensive vacuum coating methods, difficult material synthesis, complex processes, etc., and achieve material and preparation costs reduction, excellent Effects of bandgap characteristics and preparation process simplification

Inactive Publication Date: 2011-04-27
HARBIN INST OF TECH
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Problems solved by technology

[0004] At present, one of the main problems hindering the development of this industry is that some of these materials are ver...

Method used

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  • All-organic one-dimensional photonic crystal based on surface plasma effect and preparation method thereof
  • All-organic one-dimensional photonic crystal based on surface plasma effect and preparation method thereof

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Embodiment Construction

[0023] The preparation process of the PMMA / PVP:Ag one-dimensional photonic crystal structure of the present invention will be described in more detail below by taking PMMA and PVP with a dispersion concentration of Ag nanoparticles of 10% as an example.

[0024] Step 1: Dissolve 0.252 g of PVP and 0.383 g of silver nitrate in 40 ml of absolute ethanol, and continuously stir with a magnetic stirrer. PVP and silver nitrate powder gradually dissolve, and the solution gradually turns into a clear yellow-brown; the solution is prepared into a silver nanoparticle-dispersed PVP polymer sol through an aging process; the size of the nanoparticles in the polymer sol is required to be from several nanometers to several Ten nanometers; when the solid powder is completely dissolved, by measuring the optical absorption spectrum, it can be observed that the plasmon resonance absorption peak of silver nanoparticles is about 420 nanometers;

[0025] The second step: the PMMA polymer is put int...

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Abstract

The invention relates to an all-organic one-dimensional photonic crystal based on surface plasma effect and a preparation method, belonging to the technical field of photonic crystals. The invention provides the all-organic one-dimensional photonic crystal formed by alternately stacking organic polymer membranes and organic polymer membranes with uniformly dispersed nano particles, the multilayered membrane structure presents the excellent band gap characteristic, i.e. the corresponding broad band width can reach 80 nm when the transmission rate is 0.0 percent, the band gap central wavelength position (the central wavelength can be tuned in a range from visible light to near-infrared light) can be controlled by adjusting the thickness of the membrane layer so as to suit different application requirements. Corresponding to a traditional inorganic photonic crystal prepared through vacuum films, the all-organic one-dimensional photonic crystal has greatly simplified preparation process and greatly decreased material and equipment costs, and the material can be prepared into the membrane to prepare a large-area device by using a sol making method.

Description

technical field [0001] The invention belongs to the technical field of photonic crystals, and in particular relates to a one-dimensional photonic crystal formed by stacking an organic polymer film and an organic polymer film dispersed with nanoparticles. Background technique [0002] Photonic crystal is a new type of photonic material formed by two or more dielectric materials arranged periodically in space. This material was independently proposed by S.John and E.Yablonovitch in 1987, and it has attracted widespread attention due to its important application value in the fields of solar cells, low-threshold lasers, sub-wavelength integrated optical circuits, nonlinear optics, and negative refraction. focus on. In the field of optical fiber communication, photonic crystal fiber has incomparable advantages compared with traditional optical fiber, and corresponding products have appeared on the market. [0003] In fact, before the concept of photonic crystals was proposed, t...

Claims

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Application Information

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IPC IPC(8): C30B29/58G02B1/10
Inventor 姚凤凤裴延波孙秀冬姜永远
Owner HARBIN INST OF TECH
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