Kinetics of Electrons in $Ar/BF_3$ Mixtures

POSTER

Abstract

In this work we present electron transport coefficients in $Ar/BF_3$ mixtures for the conditions used in plasma assisted technologies for semiconductor production. Transport coefficients are used as the basis for a global model in $Ar/BF_3$ mixtures. We have used a two term numerical solution of the Boltzmann equation and also performed exact calculations using a Monte Carlo simulation. We have calculated electron transport coefficients for a binary mixture of 90\% Ar with 10\% of $BF_3$. Similar mixtures are often used in plasma assited ion implantation applications. In order to determine the role of radicals on kinetics, we have added 1\% of radical species F and $F_2$. The effect of radicals on electron kinetics is relatively small for abundances below 1\%. For higher abundances all transport coefficients, mean energies and rate coefficients are affected to a degree which could affect the operating conditions in plasmas.

*Results obtained in the Laboratory of Gaseous Electronics Institute of Physics University of Belgrade under the auspices of the Ministry of Education and Science, Projects No. 171037 and 410011.

Authors

  • Zeljka Nikitovic

    • Institute of Physics, Belgrade, Serbia
  • Vladimir Stojanovic

    • Institute of Physics, University of Belgrade, P.O.BOX 68 11000 Belgrade, Serbia
    • Institute of Physics, Belgrade, Serbia
  • Svetlana Radovanov

    • Varian Semiconductor/SSG/Applied Materials, 35 Dory Road, GL-17, Gloucester, MA01930 USA
    • Varian Semiconductor Equipment Associates, Inc
  • Zoran Lj. Petrovic

    • Institute of Physics, University of Belgrade
    • Institute of Physics, University of Belgrade, P.O.BOX 68 11000 Belgrade, Serbia
    • Institute of Physics, Belgrade, Serbia