Plasma parameters and etching mechanisms of metals and semiconductors in hydrogen chloride

Plasma parameters and etching mechanisms of metals and semiconductors in hydrogen chloride The parameters and steady state composition of HCl plasma are investigated under dc glow discharge conditions (p = 30–250 Pa and i p = 10–30 mA)). The simulation of plasma has shown that the balance of neutral particles is largely determined by radical-chain processes. It is shown that dissociative attachment of electrons to HClV > 0 does not have a crucial effect on the kinetics of generation and loss of charged particles. The concentrations of neutral and ionic components of the plasma are calculated; the validity of these calculations is confirmed by the satisfactory agreement between experimental and computed values of the reduced field strength and the flux density of positive ions incident onto the surface of a discharge tube. A model analysis is carried out of the effect of external discharge parameters on the kinetics of interaction between the active particles of plasma and the surface. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Microelectronics Springer Journals

Plasma parameters and etching mechanisms of metals and semiconductors in hydrogen chloride

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Publisher
SP MAIK Nauka/Interperiodica
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Engineering; Electrical Engineering
ISSN
1063-7397
eISSN
1608-3415
D.O.I.
10.1134/S1063739709030019
Publisher site
See Article on Publisher Site

Abstract

The parameters and steady state composition of HCl plasma are investigated under dc glow discharge conditions (p = 30–250 Pa and i p = 10–30 mA)). The simulation of plasma has shown that the balance of neutral particles is largely determined by radical-chain processes. It is shown that dissociative attachment of electrons to HClV > 0 does not have a crucial effect on the kinetics of generation and loss of charged particles. The concentrations of neutral and ionic components of the plasma are calculated; the validity of these calculations is confirmed by the satisfactory agreement between experimental and computed values of the reduced field strength and the flux density of positive ions incident onto the surface of a discharge tube. A model analysis is carried out of the effect of external discharge parameters on the kinetics of interaction between the active particles of plasma and the surface.

Journal

Russian MicroelectronicsSpringer Journals

Published: May 17, 2009

References

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