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Silver, gold nano particle distributed silicon dioxide optical thin-film and preparation method thereof

A metal nanoparticle, dispersion technology, applied in the direction of optics, nonlinear optics, instruments, etc., to achieve the effect of excellent nonlinear optical properties and increase the range

Inactive Publication Date: 2009-09-16
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of Au, Ag binary metal particles dispersed silica optical film in the form of simple substance by gel-sol method has not been reported yet

Method used

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  • Silver, gold nano particle distributed silicon dioxide optical thin-film and preparation method thereof

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Experimental program
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Embodiment 1

[0013] Dissolve 5ml of tetraethyl orthosilicate in 19.5ml of absolute ethanol, add 2ml of distilled water, then add a few drops of nitric acid, and stir for 1 hour to obtain colorless and transparent SiO 2 parent solution, then add 0.0422g of silver nitrate, and stir again for 1 hour to obtain Ag 0.02 / (SiO 2 ) 0.98 Precursor solution; using the same method, add 0.0977g chloroauric acid to prepare Au 0.02 / (SiO 2 ) 0.98precursor solution. Before the glue is shaken, 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 glue homogenizer. Coat Ag first 0.02 / (SiO 2 ) 0.98 film, the Ag 0.02 / (SiO 2 ) 0.98 The precursor solution was dripped onto the substrate, and then operated at a speed of 3000 rpm for 10 seconds and then at a speed of 3000 rpm for 30 seconds. After homogenizing, the sample was thermally decomposed at 180°C for 5 minutes, and after cooling, ...

Embodiment 2

[0015] Dissolve 5ml of tetraethyl orthosilicate in 19.5ml of absolute ethanol, add 2ml of distilled water, then add a few drops of nitric acid, and stir for 1 hour to obtain colorless and transparent SiO 2 parent solution, then add 0.9499g of silver nitrate, and stir again for 1 hour to obtain Ag 0.2 / (SiO 2 ) 0.8 Precursor solution; using the same method, add 0.4848g chloroauric acid to prepare Au 0.1 / (SiO 2 ) 0.9 precursor solution. Before spinning the glue, soak the substrate in acetone for ultrasonic cleaning for 5 minutes, then rinse it with distilled water and dry it, and then apply a film on the substrate by the glue leveling method. Coated Au first 0.1 / (SiO 2 ) 0.9 film, the Au 0.1 / (SiO 2 ) 0.9 The precursor solution was dripped onto the substrate, and then operated at a speed of 3000 rpm for 10 seconds and then at a speed of 3000 rpm for 30 seconds. After homogenizing, the sample was thermally decomposed at 180°C for 5 minutes, and after the sample was ...

Embodiment 3

[0017] Dissolve 5ml of tetraethyl orthosilicate in 19.5ml of absolute ethanol, add 5ml of distilled water, then add a few drops of nitric acid, and stir for 1 hour to obtain colorless and transparent SiO 2 parent solution, then add 3.7997g of silver nitrate, and stir again for 1 hour to obtain Ag 0.9 / (SiO 2 ) 0.1 Precursor solution; using the same method, add 5.583g chloroauric acid to prepare Au 0.6 / (SiO 2 ) 0.4 precursor solution. Before the glue is shaken, 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 glue leveler. Coat Ag first 0.9 / (SiO 2 ) 0.1 film, the Ag 0.9 / (SiO 2 ) 0.1 The precursor solution was dripped onto the substrate, and then operated at a speed of 3000 rpm for 10 seconds and then at a speed of 3000 rpm for 30 seconds. After homogenizing, thermally decompose the sample at 180°C for 5 minutes. After the sample is cooled, apply an...

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Abstract

The invention relates to a silver, gold nano particle distributed silicon dioxide optical thin-film and a preparation method thereof, belonging to the field of metal nano particle and inorganic non-metallic composite material. In the invention, the method of sol-gel is adopted to prepare simple substance metal nano particle distributed silicon dioxide Ag<x>Au<y> / (SiO2)<1-x-y> composite thin-film, the materials are ethyl orthosilicate, silver nitrate, chloroauric acid, absolute ethyl alcohol and distilled water; the preparation steps are as follows: configuring Aga<> / (SiO2)<1-a>, Aub / (SiO2)<1-b> sol with mol fraction a ranging from 0.02-0.9, mol fraction b ranging from 0.02 to 0.83; adopting a spin coater to coat Aga<> / (SiO2)<1-a>, Aub<> / (SiO2)<1-b> film on a glass substrate in an alternating way to prepare silver, gold single substance metal particle distributed sull thin film with a laminated structure. The method has the advantages that in the process of preparing the silver, gold single substance metal particle distributed sull, stoichiometric proportion of the Ag<x>Auy<> / (SiO2)<1-x-y> thin film can be accurately controlled, silver and gold both exist in the form of single substance, two absorption peaks can be observed within specific range of wavelength, light absorption scope is expanded and fine nonlinear optical characteristics are provided.

Description

technical field [0001] The invention belongs to the field of metal nanoparticles and inorganic non-metallic composite materials, and in particular proposes a silver and gold nanoparticle-dispersed silicon dioxide optical film and a preparation method thereof, and relates to the design and development of various metal nanoparticle-dispersed oxide optical films. Preparation Process. Background technique [0002] Nano metal particles dispersed medium composite thin film material is a kind of nonlinear optical material with good application prospect. Due to the surface plasmon resonance and local field enhancement effect of 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 kind of composite thin film materials have very broad application prospects in the field of communication as optical wave splitters and optica...

Claims

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Application Information

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IPC IPC(8): G02F1/355C08J5/18
Inventor 张波萍赵翠华张美霞尚鹏鹏
Owner UNIV OF SCI & TECH BEIJING
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