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Published online by Cambridge University Press: 28 February 2011
The etching of SiO2 was studied during reactive ion etcing (RIE) in an SF plasma.The etch rate of SiO2, the sheath voltage and the wafer temperature were measured as a function of the percentage of SF6 in Ar and as a function of the total pressure.This was done with the purpose of better understanding the etching mechanisms involved.The results are compared with similar experiments carried out with CF4 and Ar [1].Tests to the model formulated will also be given.