期刊
ACTA PHYSICA POLONICA A
卷 117, 期 3, 页码 478-483出版社
POLISH ACAD SCIENCES INST PHYSICS
DOI: 10.12693/APhysPolA.117.478
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The plasma chemical etching of Si and SiO2 in SF6+O-2 plasma is considered. The concentrations of plasma components are calculated by fitting the experimental data. The derived concentrations of plasma components are used for the calculation of Si and SiO2 etching rates. It is found that the reaction probabilities of F atoms with Si atoms and SiO2 molecules are equal to epsilon = (8.75 +/- 0.41) x 10(-3) and epsilon = (7.18 +/- 0.45) x 10(-5), respectively. The influence of O-2 addition to SF6 plasma on the etching rate of Si is determined.
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