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首页> 外文期刊>Advanced Functional Materials >Characterization and field-emission properties of vertically aligned ZnO nanaonails and nanopencils fabricated by a modified thermal-evaporation process
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Characterization and field-emission properties of vertically aligned ZnO nanaonails and nanopencils fabricated by a modified thermal-evaporation process

机译：改进的热蒸发工艺制备的垂直取向ZnO纳米钉和纳米铅笔的表征和场发射特性

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Vertically aligned ZnO nanonails and nanopencils are synthesized on a silicon substrate using a modified thermal-evaporation process, without using a catalyst or predeposited buffer layers. An adiabatic layer is used to provide an abrupt temperature decrease and high gas concentration for the nanostructures growth. The structure and morphology of the as-synthesized ZnO nanonails and nanopencils are characterized using X-ray diffraction, and scanning and transmission electron microscopies. Raman and photoluminescence properties are also investigated at room temperature. Field-emission characterization shows that the turn-on fields for the vertically aligned ZnO nanonails and nanopencils are 7.9 and 7.2 V mu m(-1), respectively.
机译：垂直对齐的ZnO纳米指甲和纳米铅笔使用改良的热蒸发工艺在硅基板上合成，无需使用催化剂或预沉积的缓冲层。绝热层用于为纳米结构的生长提供突然的温度降低和高的气体浓度。合成后的ZnO纳米指甲和纳米铅笔的结构和形态使用X射线衍射，扫描和透射电子显微镜进行表征。在室温下也研究了拉曼和光致发光性质。场发射特性表明，垂直排列的ZnO纳米指甲和纳米铅笔的开启场分别为7.9和7.2 Vμm（-1）。

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