Patent ID: 6299948
Filing Date: 2001-10-09
Classification: C23C,H01J

Abstract:
Method for treating a surface with a plasma at atmospheric pressure, comprising the steps of:introducing a treatment gas comprising one or more components into a treatment reactor, the treatment reactor comprising two exciting electrodes separated by an inter-electrode space, in which the surface to be treated is arranged between the two exciting electrodes; andapplying a supply voltage to the two electrodes so as to cause a discharge in a region of the treatment gas,wherein the supply voltage is an AC voltage having an amplitude and a frequency adapted to maintain (1) at least a portion of the components in the gas in an excited state, and/or (2) the presence of electrons, in the region in which the discharge is established between two successive half cycles of the supply voltage, wherein the amplitude and the frequency are in a predetermined range effective to ensure a uniform discharge which is filamentary discharge free.