N离子注入非晶碳膜的CN成键研究

利用Raman和XPS研究N离子注入前后非晶碳膜化学键合的变化及CN成键情况. 结果表明, 被注入到非晶碳膜内的N与C原子结合, 形成sp³C-N, sp² C-N 和C≡N键. 随着N离子注入剂量的增加, 膜内sp³ C-N键的含量相对增多, 表明N离子注入更有利于sp³ C-N键的形成.

Formation of CN Bonds in the Amorphous Carbon Film by N-Implantation

N-implantation into amorphous carbon films with different doses was carried out to study the formation of CN bonding. Raman and XPS spectra were used to characterize the chemical bonding of CN bonds in amorphous carbon films after N-implantation. The results show that N atoms implanted into amorphous carbon films are bound to C atoms by different bonding types of sp³ C-N, sp² C-N and C≡N in the films. When N-implantation dose increases, the relative content of sp³ C-N bonds increases, which is more than those of other types of C-N bonds in the films. It indicates that N-implantation is favorable to the formation of sp³ C-N bonds.