分别采用带有和不带有弯曲弧磁过滤器的真空阴极弧离子镀方法, 在不同的镀膜电流以及不同基片偏流下制备了类金刚石碳膜, 对比了不同结构下类金刚石碳膜的Raman光谱的特点. 对其Raman光谱的D峰和G峰采用Gaussian-Lorentzion的几率分布进行了分峰, 并着重讨论了基片偏流、弯曲磁场等沉积参数对膜结构的影响. 结果表明, 氩分压对膜结构影响不大, 较大的偏流以及弯曲磁场的加入均有利于sp3杂化碳键的形成.
The structures of diamond-like carbon (DLC) films deposited by vacuum arc evaporation with and without curve arc magnetic filter are studied and compared using Raman shifts. The Raman shifts are deconvolved into D peak and G peak with Gaussian-Lorentzion fitness. The effects of the deposition parameters such as bias voltage and bias current strength of curved magnetic fields on the DLC films structures are discussed. The results show that Ar gas pressure has not obvious effect on the formation of the DLC film; moderate bias current increases the sp3 content; the sp2 cluster can be increased for a too high substrate bias. The magnetic curved filter not only can remove the carbon macroparticles, but also can improve the sp3 content.
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