TITLE

Theoretical investigation of phase-controlled bias effect in capacitively coupled plasma discharges

AUTHOR(S)
Kwon, Deuk-Chul; Yoon, Jung-Sik
PUB. DATE
July 2011
SOURCE
Physics of Plasmas;Jul2011, Vol. 18 Issue 7, p073506
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We theoretically investigated the effect of phase difference between powered electrodes in capacitively coupled plasma (CCP) discharges. Previous experimental result has shown that the plasma potential could be controlled by using a phase-shift controller in CCP discharges. In this work, based on the previously developed radio frequency sheath models, we developed a circuit model to self-consistently determine the bias voltage from the plasma parameters. Results show that the present theoretical model explains the experimental results quite well and there is an optimum value of the phase difference for which the Vdc/Vpp ratio becomes a minimum.
ACCESSION #
63542392

 

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