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    题名: Characteristics of ZnO thin film surface acoustic wave devices fabricated using nanocrystalline diamond film on silicon substrates
    作者: Shih, Wen-ching;Wang, Mao-jin;林諭男;Lin, I-nan
    贡献者: 淡江大學物理學系
    关键词: Nanocrystalline diamond;Surface acoustic wave devices;High frequency electronics;Sputtering
    日期: 2008-03-01
    上传时间: 2010-02-23 14:23:34 (UTC+8)
    出版者: Elsevier
    摘要: The propagation characteristics of surface acoustic wave for the ZnO piezoelectric films and nanocrystalline diamond (NCD) films multilayer SAW devices on Si substrates were investigated. High surface acoustic wave velocity is achieved for a ZnO/NCD/Si multilayer structure excited by a bottom-electroded device configuration. The NCD films deposited on Si substrates (NCD/Si) not only possess smooth surface, but also show good compatibility with ZnO materials, such that [002] textured ZnO films can be directly grown on NCD/Si substrates without the necessity of using buffer layer. The surface acoustic wave velocity increased with the thickness of the NCD films. For the thickness of the ZnO and NCD films investigated, the 0th mode surface acoustic velocity in IDT/ZnO/NCD/Si structure achieves 5100 m/s, whereas the 1st mode SAW in the ZnO/IDT/NCD/Si structure reaches 8500 m/s.
    關聯: Diamond and Related Materials 17(3), pp.390-395
    DOI: 10.1016/j.diamond.2008.01.082
    显示于类别:[物理學系暨研究所] 期刊論文

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