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Sol-gel-derived Hybrid Conductive Films for Electromagnetic Interference (EMI) Shielding

Sol-gel-derived Hybrid Conductive Films for Electromagnetic Interference (EMI) Shielding
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摘要 The conductive nano-sized zinc particles were embedded in an insulating amorphous silica matrix,and the hybrid films were obtained by a sol-gel method.The stable hybrid sol solution was prepared by hydrolysis and condensation of Methyltrimethoxysilane (MTMS) with a one-step acidic catalyst process.Hybrid films were dip-coated on silicon wafer and cured at 120℃ for 60minutes.The structural characterization of hybrid films were investigated by means of attenuated total reflection infrared (ATR-IR) spectroscopy and X-ray diffraction (XRD).The electrical properties of the films were examined with four-point probe.Hybrid films showed to be relatively dense,uniform and defect free.The conductivity of hybrid films was varied with the different contents of zinc nanoparticles and the thickness of the film.It was observed that there was the percolation threshold for the film's electrical properties. The conductive nano-sized zinc particles were embedded in an insulating amorphous silica matrix,and the hybrid films were obtained by a sol-gel method.The stable hybrid sol solution was prepared by hydrolysis and condensation of Methyltrimethoxysilane (MTMS) with a one-step acidic catalyst process.Hybrid films were dip-coated on silicon wafer and cured at 120℃ for 60minutes.The structural characterization of hybrid films were investigated by means of attenuated total reflection infrared (ATR-IR) spectroscopy and X-ray diffraction (XRD).The electrical properties of the films were examined with four-point probe.Hybrid films showed to be relatively dense,uniform and defect free.The conductivity of hybrid films was varied with the different contents of zinc nanoparticles and the thickness of the film.It was observed that there was the percolation threshold for the film's electrical properties.
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出处 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2011年第2期217-222,共6页 武汉理工大学学报(材料科学英文版)
关键词 SOL-GEL hybrid films CONDUCTIVE EMI shielding sol-gel hybrid films conductive EMI shielding
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