Patent ID: 6845733

Claim:
A device for treating wafers with a plasma jet, comprising a plasma jet generator; gas supplying means; a set of holders for wafers to be treated, said holders having a drive for effecting angular displacement thereof and for facing a generator plasma jet; each of the holders being made in the form of a horizontal platform mounted for rotation about an axis passing through a geometric center thereof and perpendicular to a plane of said platform; said plasma jet and wafer holders being displaced with respect to each other and may be in or out of contact with each other; a plasma jet generator located such that a plasma jet is directed in the direction of said horizontal platforms of said wafer holders, each wafer holder being provided with at least one vortex chamber and at least one tangential channel in fluid flow communication between said gas supplying means and said at least one vortex chamber, said chambers defining axes substantially perpendicular to a plane of said horizontal platforms; each of said vortex chambers being provided with an open portion located on a level end surface of the wafer holder, coupled through the tangential channel to said gas supplying means and located such that resulting vortex flows formed permit the positioning of each wafer near the holder and cooling of its individual areas to equalize, over each wafer surface, an amount of energy used for treating the wafer surfaces.