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HomeKey Engineering MaterialsKey Engineering Materials Vol. 768Z-Scan Study on a Silver Nanoparticles Embedded...

Z-Scan Study on a Silver Nanoparticles Embedded TeO₂-SiO₂ Glass Prepared by Sol-Gel Method

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Abstract:

An inserted type Ag/TeO₂-SiO₂ composite gel glass was prepared through silver nanoparticles embedded in TeO₂-SiO₂ composite gel. The silver nanoparticles were prepared previously by ascorbic acid deoxygenates AgNO₃solution and mixed into TeO₂-SiO₂ composite sol which was prepared in aqueous system using TeO₂ and tetraethoxysilane as precursors, and then the inserted type Ag/TeO₂-SiO₂ composite gel glass was produced through sol aging and molding. The silver nanoparticles which dispersed in the TeO₂-SiO₂ gel substrate made the composite glass having excellent nonlinear optical properties. The nonlinear optical parameters was tested by Z-scan technique using 15 ps laser pulses at the wavelength of 532 nm. The surface morphology was characterized by SEM. The results identified that spherical Ag nanoparticles with the size about 50-100 nm dispersed in the TeO₂-SiO₂ gel. In the Ag/TeO₂-SiO₂material, the doped structure and the trigonal bipyramid structure of TeO₂ was the important factor for the excellent nonlinear optical performance.

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Periodical:

Key Engineering Materials (Volume 768)

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239-245

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.768.239

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Online since:

April 2018

Authors:

Qiang Li*, W.Y. Liu, Guo Yin Sun

Keywords:

Ag/TeO₂-SiO₂ Composite Gel, Nonlinear Optical Properties, Silver Nanoparticles, Z-Scan

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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