采用射频TCP(Transverse coup led p lasm a)等离子体辅助电子枪蒸发技术首次在室温下制备了氮化铝薄膜,用傅立叶变换红外光谱仪分析了氮化铝薄膜红外光谱的特性.利用朗缪尔静电单探针诊断了射频TCP离子束辅助电子枪蒸发镀膜装置反应室内等离子体密度的空间分布规律,并分析了气压对等离子体分布的影响.离子源口等离子体密度较大,但分布不均匀;反应室内等离子体迅速扩散,密度变小,分布趋向于均匀.
The spatial distribution of Electron Cyclotron Resonance （ECR） plasma in the ECRPlasma Enhanced Metalorganic Chemical Vapour Deposition （ECR-PECVD） reaction chamber is diagnosed by a Langmuir probe. The uniformity is also investigated. The results show that the ECR plasma in the upper region of the reaction chamber under the influence of magnetic field has poor radial and axial uniformity. However, the plasma in the downstream region of the reaction chamber has fine radial uniformity. This excellent uniform plasma in the downstream has extensive application in plasma process.
In order to deposit good films, we need to study the uniformity of plasma density and the plasma density under different gas pressures and powers. The plasma density was diagnosed by a Langmuir probe. The optical emission spectroscopy （OES） of CH4 and H2 discharge was obtained with raster spectroscopy, with characteristic peaks of H and CH achieved. Diamond-like carbon films were achieved based on the study of plasma density and OES and characterized by atomic force microscope （AFM）, X-ray diffraction instrument （XRD）, Raman spectroscope and profiler.
