Near-Edge X-ray Absorption Fine-Structure, X-ray Photoemission, and Fourier Transform Infrared Spectroscopies of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films
Near-Edge X-ray Absorption Fine-Structure, X-ray Photoemission, and Fourier Transform Infrared Spectroscopies of Ultrananocrystalline Diamond/Hydrogenated Amorphous Carbon Composite Films
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DOI：
10.1143/jjap.48.020222
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发表时间：
2009-02-01
影响因子：
1.5
通讯作者：
Nagayama, Kunihito
中科院分区：
文献类型：
--
作者：
Yoshitake, Tsuyoshi;Nagano, Akira;Nagayama, Kunihito
利用近边X射线吸收精细结构谱（NEXAFS）、X射线光电子能谱（XPS）和傅里叶变换红外光谱（FTIR）研究了脉冲激光沉积法制备的超纳米金刚石（UNCD）/氢化非晶碳（a-C：H）复合薄膜的化学键结构。在FTIR光谱中观察到一个强烈的sp（3）-CH峰。这意味着sp（3）-CH峰起源于UNCD微晶之间的晶界，其中悬挂键以氢原子终止。NEXAFS谱中强烈的sigma*C-C峰和光电子能谱中窄的sp（3）峰的存在是UNCD/a-C：H膜特有的;这些证实了UNCD微晶的存在。(C)2009日本应用物理学会
The chemical bonding structure of ultrananocrystalline diamond (UNCD)/hydrogenated amorphous carbon (a-C:H) composite films prepared by pulsed laser deposition was examined by near-edge X-ray absorption fine-structure (NEXAFS), X-ray photoemission, and Fourier transform infrared (FTIR) spectroscopies. An intense sp(3)-CH peak was observed in the FTIR spectrum. This implies that the sp(3)-CH peak originates from the grain boundaries between UNCD crystallites, wherein dangling bonds are terminated with hydrogen atoms. The presence of an intense sigma*C-C peak in the NEXAFS spectrum and a narrow sp(3) peak in the photoemission spectrum was specific to UNCD/a-C:H films; these confirm the existence of UNCD crystallites. (C) 2009 The Japan Society of Applied Physics