A kind of silver nanoparticle composite bulk bismuthate glass material and preparation method thereof

Abstract

The invention discloses a silver nanoparticle composite block bismuthate glass material, the mole percentage composition of which comprises: Bi 2 o 3 60~70%, B 2 o 3 10~30%, TiO 2 10~15%, and the doping concentration of the silver-containing compound is 0.05~0.3wt%. The present invention takes bismuth salt glass as matrix glass, adds TiO 2 And doped with silver-containing compounds to optimize its components, and prepare silver nanoparticles with excellent optical properties such as wide infrared transmission range, high mechanical strength, good chemical stability and high linear refractive index. Particle Composite Bulk Bismuthate Glass Material with Nonlinear Refractive Index gamma Values ​​up to 2.69×10 -16 m 2 / W, has a strong surface plasmon effect, significantly enhances its third-order nonlinear effect within the coverage of the surface plasmon effect, and has certain application potential in new all-optical switches and related nonlinear optical devices. The application field of the silver nanoparticle composite bulk bismuthate glass material is expanded; the preparation method is simple, efficient, energy-saving, and the preparation cost is low.

Description

technical field [0001] The invention relates to a composite bulk glass material, in particular to a silver nanoparticle composite bulk bismuthate glass material and a preparation method thereof. Background technique [0002] Surface Plasmon Resonance (SPR) is a physical optical phenomenon. It utilizes the evanescent wave that penetrates into the metal film when the total internal reflection of light occurs at the interface between the glass and the metal film, and induces free electrons in the metal to generate surface plasmons. When the incident angle or wavelength is a certain value, The frequency and wavenumber of the surface plasmon and the evanescent wave are equal, and the two will resonate, the incident light is absorbed, the energy of the reflected light drops sharply, and the lowest reflection intensity appears on the reflection spectrum, which is the resonance peak. When the refractive index of the medium close to the surface of the metal film is different, the re...

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Problems solved by technology

"Single-Step Synthesis and Surface Plasmons of Bi-wrapped Spherical to Hexagonal Ag Nanoparticles and Their Plasma Properties in Two-color Ag:Bi Glass Nanocomposites" published by "Plasma" in the United States in 2011 Bismuth-Coated Spherical to Hexagonal Silver Nanoparticles in Dichroic Ag: Bismuth Glass Nanocomposites, Plasmonics (2011) 6:457–467), at 30K 2 O-40Bi 2 o 3 -30B 2 o 3 For the matrix glass, add 0, 0.007, 0.01, 0.02, 0.03 and 0.06 mass percent (wt%) of AgNO 3 , prepared silver nanoparticles doped bismuthate glass composite bulk materials, the results of this study showed that when AgNO 3 When the content is 0.007~0.01wt%, there is an obvious surface plasmon absorption peak at 575nm, and when AgNO 3 When the content increases to 0.03wt%, there is a strong surface plasmon absorption peak at 780nm, but the intensity of the surface plasmon absorption peak at these two places is still weak, so the surface plasmon effect is also weak, and the author did not Analyzing the nonlinear effects of the composite bulk material

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