Method for preparing nano silver particle dispersion silicon dioxide optical film

A technology of nano silver particles and silicon dioxide, which is applied in optics, optical components, nonlinear optics, etc., can solve the problem of no absorption peaks being observed, and achieve the effects of excellent nonlinear optical characteristics, low reaction temperature, and energy saving.

Inactive Publication Date: 2008-04-23
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bi et al. prepared Ag composite films by sol-gel method, in which the doping amount of Ag was up to 2.4wt%, and the prepared films had to undergo H 2 or N 2 The heat treatment of the atmosphere can show the plasmon resonance absorption peak at 420nm, and when the heat treatment is carried out directly in the air, because the Ag element in the film exists in the state of AgO, no absorption peak is observed [Huijuan Bi, Weiping Cai, andLide Zhang : APPLIED PHYSICS LETTERS, 81 [27] (2002) 5222-5224]

Method used

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  • Method for preparing nano silver particle dispersion silicon dioxide optical film
  • Method for preparing nano silver particle dispersion silicon dioxide optical film

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Dissolve 2ml TEOS in 1ml H 2 O and 8mlCH 3 OCH 2 CH 2 OH solvent, and stir in an ultrasonic cleaner for 1 minute, add 1 drop of concentrated nitric acid, and stir for 1 hour for hydrolysis and polycondensation, add 0.017g AgNO 3 , and stirred again for 0.5 h to obtain Ag / SiO 2 Precursor solution; when uniform film, drop the solution onto the substrate. First run at 200rpm for 5 seconds, then run at 1000rpm for 10 seconds. Every time the glue is uniformed, the film is thermally decomposed at 100°C for 2 seconds. After the glue is glued once, the sample is placed in a rapid heat treatment furnace for annealing treatment for 0.5 minutes. The annealing temperature is 600°C, and the Ag content is 2wt% Ag. / SiO 2 Composite film.

Embodiment 2

[0018] Dissolve 0.23ml TEOS in 2ml H 2 O and 8mlCH 3 OCH 2 CH 2 OH solvent, and stirred in an ultrasonic cleaner for 10 minutes, added 10 drops of concentrated nitric acid, and stirred for 4 hours for hydrolysis and polycondensation, added 0.0256g AgNO 3 , and stirred again for 2 hours, the Ag / SiO 2 Precursor solution; when uniforming the film, drop the solution onto the substrate, first run at 300rpm for 6 seconds, then run at 2000rpm for 30 seconds. Every time the glue is glued, the film is thermally decomposed at 150°C for 200 seconds. After being glued 5 times, the sample is placed in a rapid heat treatment furnace for annealing treatment for 30 minutes. The annealing temperature is 600°C, and the Ag content is 30wt% Ag. / SiO 2 Composite film.

Embodiment 3

[0020] Dissolve 2.5ml TEOS in 0.5ml H 2 O and 9.5ml CH 3 OCH 2 CH 2 OH solvent, and stirred in an ultrasonic cleaner for 15 minutes, added 15 drops of concentrated nitric acid, and stirred for 6 hours for hydrolysis and polycondensation, added 1.004g AgNO 3 , and stirred again for 2.5 hours to obtain Ag / SiO 2 Precursor solution; when uniforming the film, drop the solution onto the substrate, first run at 500rpm for 6 seconds, then run at 4000rpm for 40 seconds. Every time the glue is uniformed, the film is thermally decomposed at 150°C for 300 seconds. After 50 times of glueing, the sample is placed in a rapid heat treatment furnace for annealing treatment for 30 minutes. The annealing temperature is 300°C, and the Ag content is 60wt% Ag. / SiO 2 Composite film.

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Abstract

This invention relates to a preparation method for nm Ag particle scattered SiO2 optical film, which applies a sol-gel method to prepare Ag / SiO2 compound films including the following steps: preparing materials: taking AgNO3 and metasilicic acid carbethoxy as the raw materials, in which, the concentration of the metasilicic acid carbethoxy solution is 0.1-1mol / L, the solvent is glycol methyl ether and deionized water and the proportion of them is controlled at 5-20%, the mol ration of the AgNO3 and the metasilicic acid carbethoxy is 0.018:1-7.87:1, preparing a precursor solution and preparing the Ag / SiO film.

Description

technical field [0001] The invention belongs to the field of composite materials of nano-metal particles and inorganic non-metal materials, and in particular provides a preparation method for nano-silver particle-dispersed silicon dioxide optical films. Involving a nano-metal particle (Ag) dispersed oxide (SiO 2 ) Design and preparation process of nonlinear optical thin film materials. Background technique [0002] Nano-metal particles dispersed oxide films have excellent nonlinear optical properties. Because the surface effect and quantum size effect of metal nanoparticles are very significant, the metal particles interact with the surrounding oxide matrix, and the electrons and ions inside the metal particles are transferred to the interface. come up to form plasma. Under the action of incident light, the phenomenon of surface plasmon resonance occurs, which selectively absorbs and transmits incident light waves. Functional thin films with such nonlinear optical propert...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/00C03C17/36G02F1/35
Inventor 张波萍焦力实丁昕祯陈灿张海龙
Owner UNIV OF SCI & TECH BEIJING
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