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    题名: Hydrogenation effects of ultrananocrystalline diamond detected by X-ray absorption near edge structure and Raman spectroscopy
    作者: Ray, S. C.;Erasmus, R. M.;Tsai, H. M.;Pao, C. W.;Lin, I.-N.;Pong, W. F.
    贡献者: 淡江大學物理學系
    日期: 2012-08-23
    上传时间: 2013-01-25 11:30:29 (UTC+8)
    出版者: Tokyo: The Japan Society of Applied Physics
    摘要: Nitrogen-doped ultrananocrystalline diamond (UNCD) thin films functionalized with H2 are significantly affected by the sp2 hybridized carbon defects that are detected and analyzed using X-ray absorption near edge structure (XANES) and Raman spectroscopy using two different excitation wavelengths. The XANES and Raman results provide evidence for the presence of aromatic hydrocarbons and sp2 amorphous matrix in the grain boundaries when UNCD films are functionalized with H2. These hydrocarbons increase on hydrogenation leading to a decrease of the sp2-carbon defects (π* C=C bond) and an increase of sp3-carbon (σ* C–C bond). This sp3-carbon (σ* C–C bond) is evidently responsible for UNCD crystallites existence in the film structure and hence change the structural integrity, electronic structure, electrical and bonding properties.
    Nitrogen-doped ultrananocrystalline diamond (UNCD) thin films functionalized with H2 are significantly affected by the sp2 hybridized carbon defects that are detected and analyzed using X-ray absorption near edge structure (XANES) and Raman spectroscopy using two different excitation wavelengths. The XANES and Raman results provide evidence for the presence of aromatic hydrocarbons and sp2 amorphous matrix in the grain boundaries when UNCD films are functionalized with H2. These hydrocarbons increase on hydrogenation leading to a decrease of the sp2-carbon defects (π* C=C bond) and an increase of sp3-carbon (σ* C–C bond). This sp3-carbon (σ* C–C bond) is evidently responsible for UNCD crystallites existence in the film structure and hence change the structural integrity, electronic structure, electrical and bonding properties.
    關聯: Japanese Journal of Applied Physics 51(9), 095201(5pages)
    DOI: 10.1143/JJAP.51.095201
    显示于类别:[物理學系暨研究所] 期刊論文

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