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A silver-gold binary elemental metal nanoparticle dispersed alumina nonlinear optical film and its preparation method

A technology of metal nanoparticles and nonlinear optics, applied in the direction of nonlinear optics, optics, liquid chemical plating, etc., can solve the problems of increasing process complexity and inability to accurately control the thickness of the film, and achieve the scope of increasing the nonlinear absorption of light , excellent nonlinear optical properties, and easy operation

Active Publication Date: 2017-12-26
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although the composite film in which binary metal nanoparticles are dispersed in the oxide in a layered structure also expands the light absorption range of the film and has two plasmon resonance absorption peaks, due to the separation of silver and gold during the preparation of the film Layer coating, so the thickness of the film cannot be precisely controlled, which limits its application
In addition, when using the sol-gel method to prepare a thin film with a layered structure, it is necessary to prepare Ag and Au matrix sols separately and perform layered coating, which increases the complexity of the process.
So far, there have been no reports of thin films in which Ag and Au metals are uniformly distributed in the form of simple substances.

Method used

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  • A silver-gold binary elemental metal nanoparticle dispersed alumina nonlinear optical film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Preparation of a silver and gold binary elemental metal nanoparticle dispersed alumina nonlinear optical film:

[0019] Dissolve 3.94272g (0.016mol) aluminum sec-butoxide in 7.638ml (0.1mol) isopropanol, stir for 15 minutes, add 2.5270ml (0.02mol) ethyl acetoacetate, stir for 30 minutes, then add 0.36ml (0.02mol) Mol) distilled water, stir for 20 minutes to obtain colorless and transparent Al 2 O 3 Then add 0.16987g (0.001 mol) silver nitrate and .041198g (0.001 mol) chloroauric acid tetrahydrate, and stir again for 1 hour to prepare Ag 0.1 Au 0.1 / (Al 2 O 3 ) 0.8 Precursor sol. Before the glue is spun, the substrate is immersed in acetone for ultrasonic cleaning for 5 minutes, then rinsed with distilled water and dried, and then coated on the glass substrate with a homogenizer. Ag 0.1 Au 0.1 / (Al 2 O 3 ) 0.8 The precursor sol was dropped onto the substrate, and after running at a speed of 300 rpm for 10 seconds, it was operated at a speed of 3000 rpm for 30 seconds. Afte...

Embodiment 2

[0021] Preparation of a silver and gold binary elemental metal nanoparticle dispersed alumina nonlinear optical film:

[0022] Dissolve 2.11778g (0.009mol) aluminum sec-butoxide in 45.8298ml (0.6mol) isopropanol, stir for 15 minutes, add 25.2699ml (0.2mol) ethyl acetoacetate, stir for 30 minutes, then add 5.4ml (0.3 Mol) distilled water, stir for 20 minutes to obtain colorless and transparent Al 2 O 3 Then add 0.84935g (0.005mol) of silver nitrate and 0.20599g (0.0005mol) of chloroauric acid tetrahydrate, and stir again for 1 hour to obtain Ag 0.5 Au 0.05 / (Al 2 O 3 ) 0.45 Precursor sol. Before the glue is spun, the substrate is immersed in acetone for ultrasonic cleaning for 5 minutes, then rinsed with distilled water and dried, and then coated on the glass substrate with a homogenizer. Ag 0.5 Au 0.05 / (Al 2 O 3 ) 0.45 The precursor sol was dropped onto the substrate, and after running at a speed of 300 rpm for 10 seconds, it was operated at a speed of 3000 rpm for 30 seconds. ...

Embodiment 3

[0024] Preparation of a silver and gold binary elemental metal nanoparticle dispersed alumina nonlinear optical film:

[0025] Dissolve 5.0788g (0.0149mol) of aluminum sec-butoxide in 50.9221ml (0.2mol) of isopropanol, stir for 30 minutes, add 2.527ml (0.01mol) of ethyl acetoacetate, stir for 60 minutes, and then add 1.44ml (0.04 Mol) distilled water, stir for 20 minutes to obtain colorless and transparent Al 2 O 3 Then add 1.132g (0.0067mol) of silver nitrate and 0.1236g (0.003mol) of chloroauric acid tetrahydrate, and stir again for 3 hours to obtain Ag 0.245 Au 0.01 / (Al 2 O 3 ) 0.745 Precursor sol. Before the glue is spun, the substrate is immersed in acetone for ultrasonic cleaning for 5 minutes, then rinsed with distilled water and dried, and then coated on the glass substrate with a homogenizer. Ag 0.245 Au 0.01 / (Al 2 O 3 ) 0.745 The precursor sol was dropped onto the substrate, and after running at a speed of 300 rpm for 10 seconds, it was operated at a speed of 3000 rpm...

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Abstract

The invention discloses a silver-gold binary simple-substance metal nanoparticle dispersion aluminium oxide non-linear optical thin film and a preparation method. Aluminum tri-sec-butoxide, isopropyl alcohol, ethyl acetoacetate, distilled water, silver nitrate and chloroauric acid hydrated are used as raw materials, the sol-gel method is used for synthesizing presoma gel which is accurate in stoichiometric ratio and even in ingredient, then a spin coater is used for coating a glass substrate with a film, and the thin film is obtained after annealing. The silver-gold binary simple-substance metal nanoparticle dispersion aluminium oxide non-linear optical thin film and the preparation method have the advantages that the method is convenient to operate, preparation cycle is short, energy is saved, cost is low, and the stoichiometric ratio of the thin film can be accurately controlled; through the preparation method, the stoichiometric ratio of the AgaAub / (Al2O3)(1-a-b) thin film can be accurately controlled, silver and gold particles are evenly distributed in the thin film in a simple-substance metal state, non-linear absorption range of light is expanded, and the thin film has good non-linear optical property.

Description

Technical field [0001] The invention belongs to the field of metal nano particles and metal oxide composite materials, in particular to a silver and gold binary elementary metal nano particles dispersed alumina nonlinear optical film and a preparation method. Background technique [0002] The metal nanoparticle dispersed oxide composite film is an excellent third-order nonlinear optical material. Due to the surface plasmon resonance and local field enhancement effect of the metal particles, the composite film has strong light absorption, extremely fast response time and very high nonlinear coefficient in a specific wavelength range. These remarkable nonlinear optical properties make this type of composite film materials have potential applications in light wave separators, optical switches, optical detectors, optical modulators, optical computing, and optical fiber communications, and they have become the forefront of nonlinear optical research. Subject. [0003] The non-linear o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/355C23C18/00
Inventor 赵翠华杜君莉陈建华李玉琼梁天权
Owner GUANGXI UNIV
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