Mechanism of nitrogen incorporation into amorphous-CNx films formed by plasma-enhanced chemical-vapor deposition of the doublet and quartet states of the CN radical

被引:40
作者
Ito, H [1 ]
Ito, N [1 ]
Takahashi, T [1 ]
Takamatsu, H [1 ]
Tanaka, D [1 ]
Saitoh, H [1 ]
机构
[1] Nagaoka Univ Technol, Dept Chem, Nagaoka, Niigata 9402188, Japan
来源
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2000年 / 39卷 / 3A期
关键词
optical emission spectroscopy; CN; electronic states; microwave plasma; rf plasma; chemical-vapor deposition; amorphous-CNx films; mechanism of film formation;
D O I
10.1143/JJAP.39.1371
中图分类号
O59 [应用物理学];
学科分类号
摘要
High-resolution CN(B-2 Sigma(+)-X(2)Sigma(+))emission spectra were observed for the various processes to form amorphous-CNx (a-CNx) films using the plasma-enhanced chemical-vapor deposition of the CN radical produced from the dissociative excitation reactions of cyanides. A strong correlation was confirmed between the electronic states of CN in the plasma and the bonding states of nitrogen atoms in the films. The (4)Sigma(+) and (4)Pi states of CN were the precursors of the one- and/or two-dimensional C=N and C-N network structures of the films with high nitrogen content, [N]/([N]+[C]) less than or equal to 0.5. The CN(X(2)Sigma(+)) state formed the C=N terminations primarily, a part of which changed to the one-dimensional C=N network from the additive reactions. The above correlation was fully explained by the molecular orbitals and the electronic configurations for the relevant electronic states of CN.
引用
收藏
页码:1371 / 1377
页数:7
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