The plasma baffle assembly of claim 5, wherein the width is within a range from about 0.60 mm to about 0.90 mm. The plasma baffle assembly of claim 3, wherein the injection angle is within a range from about 30° to about 60°. The plasma baffle assembly of claim 3, wherein the circular gas flow pattern comprises a flow pattern selected from the group consisting of vortex, helix, spiral, twirl, twist, coil, whirlpool, and derivatives thereof. The plasma baffle assembly of claim 1, wherein each of the slots is positioned at an injection angle relative to the central axis of the plasma baffle plate to provide a process gas with a circular gas flow pattern.

The plasma baffle assembly of claim 1, wherein each slot of the plurality of slots has a width within a range from about 0.50 mm to about 1.00 mm. A plasma baffle assembly configured to receive and disperse a process gas within a plasma-enhanced vapor deposition chamber, comprising: a plasma baffle plate containing an upper surface with a plurality of first radially extended openings and a lower surface with a plurality of second radially extended openings a plurality of slots extending from the first radially extended openings on the upper surface, through the plasma baffle plate, and to the second radially extended openings on the lower surface anda truncated cone portion disposed on the upper surface and aligned with a central axis of the plasma baffle plate extending substantially perpendicular to the lower surface wherein each of the first radially extended openings and each of the second radially extended openings is disposed around the truncated cone portion and each of the first radially extended openings is extended in a direction substantially tangential to an outside perimeter of the truncated cone portion, and wherein any of the first radially extended openings is oriented in an angular relationship with the corresponding second radially extended opening that is in direct fluid communication therewith, and the angular relationship is within a range from about 0° to about 90°.

Roderick van der wijck