Profile control of SiH radicals by cross magnetic field in plasma processing

Abstract
The distributions of optical emission intensity along the discharge axis in multiple‐parallel‐plate ac glow discharges were measured in the presence of a magnetic field perpendicular to the discharge electric field. In a SiH4(10%)/Ar discharge, time‐averaged spectroscopic measurements showed that profile control of not only plasmas but also SiH* was possible by varying the field strength. The emission intensity of SiH* was increased with the field strength. These results suggest that the present new configuration with cross magnetic field can make thin films on a large‐area substrate outside the multielectrodes uniform and can enhance the deposition rate.

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