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首页> 外文期刊>Carbon: An International Journal Sponsored by the American Carbon Society >Preparation of carbon-based transparent and conductive thin films by pyrolysis of silylated graphite oxides
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Preparation of carbon-based transparent and conductive thin films by pyrolysis of silylated graphite oxides

机译:硅烷化氧化石墨热解制备碳基透明导电薄膜

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摘要

Thin films of silylated graphite oxide were obtained from a chloroform/cyclohexane dispersion of n-hexadecylamine-intercalated silylated graphite oxide by a casting method at a low temperature. Carbon-based thin films were obtained from the pyrolysis of the resulting films under a reduced pressure at 500 °C or higher temperatures. The resulting samples were well adhered to the substrate because of the presence of silicon containing species as a "glue". The resistivity decreased with an increase in the film thickness or a decrease in the transparency. Based on the data obtained for the samples prepared from graphite with different particle sizes and graphite oxide with different oxygen contents, the conduction of the electrons within each carbon sheet seemed important for large film thickness and conduction through the boundary seemed important when the film thickness was small. A low sheet resistance of 3.7 kn/sq for 80% of transmittance'was achieved, when graphite oxide with a lower oxygen content was prepared from graphite with smaller particle sizes and the precursor film was heated at 500 °C. At 9oo °C, it further decreased to a value of 700 Ω /sq.
机译:通过在低温下通过流延法从正十六烷基胺插入的甲硅烷基化氧化石墨的氯仿/环己烷分散体中获得甲硅烷基化氧化石墨的薄膜。通过在500℃或更高的温度下在减压下对所得膜进行热解而获得碳基薄膜。由于存在作为“胶”的含硅物质,因此所得样品很好地粘附在基材上。电阻率随着膜厚度的增加或透明度的降低而降低。根据从具有不同粒径的石墨和具有不同氧含量的氧化石墨制备的样品获得的数据,每个碳片中电子的传导对于大的膜厚似乎很重要,而当膜厚为时,通过边界的传导似乎很重要。小。当由具有较小粒径的石墨制备具有较低氧含量的氧化石墨并且将前体膜在500℃下加热时,对于80%的透射率,实现了3.7kn / sq的低薄层电阻。在9oo°C时,它进一步降低到700Ω/ sq的值。

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