26 September 2016 Optical properties of a-C:H thin films modified by Ti and Ag
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Abstract
Structure and optical properties of amorphous diamond-like carbon (a-C: H) thin films modified with Ag, Ti and Ag + Ti metal impurities are studied. The films were prepared by ion-plasma magnetron sputtering of combined polycrystalline graphite and metal target in the mixture of Ar and CH4 gases. AFM, SEM and TEM methods show that a-C:H<Ag+Ti> films are heterogeneous, nanostructured and characterized by the presence of silver nanoclusters on the surface sized ~ 60 nm and both Ti and Ag nanoclusters with a mean size ~ (2 ÷ 3) nm in the bulk of films. It was found that in a- C:H<Ag+Ti> films as well as in a-C:H<Ag> films plasma resonance absorption due to excitation of surface plasmons in silver nanoclusters in the visible region of spectrum takes place. Intensity of the resonance absorption in the a- C:H<Ag+Ti> films increases with increase in concentration of silver. The results are important for produce of nanomaterials with nonlinear optical properties based on the amorphous diamond-like carbon films containing metal nanoclusters.
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Oleg Yu. Prikhodko, Oleg Yu. Prikhodko, Svetlana L. Mikhailova, Svetlana L. Mikhailova, Ershan C. Mukhametkarimov, Ershan C. Mukhametkarimov, Suyumbika Ya. Maksimova, Suyumbika Ya. Maksimova, Nurlan K. Manabaev, Nurlan K. Manabaev, Kuanysh Dauthan, Kuanysh Dauthan, } "Optical properties of a-C:H thin films modified by Ti and Ag", Proc. SPIE 9929, Nanostructured Thin Films IX, 99291G (26 September 2016); doi: 10.1117/12.2238455; https://doi.org/10.1117/12.2238455
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