Ja. Leavitt et al., ION-BEAM ANALYSIS OF SILICON-CARBIDE, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 118(1-4), 1996, pp. 613-616
Channeling and backscattering measurements with 3.8 MeV He-4 analysis
beams have been used to determine the C/Si stoichiometric ratio in 100
-200 nm SiCx(H-y) films deposited on (100) Si substrates by plasma-enh
anced CVD using gas mixtures of CH4 and SiH4. The results show that bo
th annealed and unannealed films are amorphous and allow determination
of the C/Si ratio to better than +/-10% for 0.2 < x < 1.0. Film hydro
gen content was determined by ERD with 3.5 MeV He-4 analysis beams. In
addition, potential problems associated with the use of the 4.265 MeV
He-4-C resonance to quantify C in Si are discussed.