The spectral dependence of the absorption coefficient has been studied in the 190 nm to 1.9 μm region for undoped silicon−carbon films synthesized from polyphenylmethylsiloxane (PPMS) silicon organic liquid by high−frequency deposition from PPMS vapor plasma. We show that the short−wave absorption region of the films is not monotonic and contains various types of electron transitions, probably including interband ones.

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