Cluster-beam deposition and in situ characterization of carbyne-rich carbon film

2019-12-02 22:26:56

SP carbon species Raman carbyne

责任者: Ravagnan, L.;Siviero, F.;Lenardi, C.;Piseri, R.;Barborini, E.;Milani, P.;Casari, C.S.;Bassi, A.L.;Bottani, C.E. 单位: Dipt. di Fisica, Univ. di Milano, Italy 来源出处: Physical Review Letters(Phys. Rev. Lett. (USA)),2002/12/31,89(28):285506-1 摘要: Nanostructured carbon films produced by supersonic cluster beam deposition have been studied by in situ Raman spectroscopy. Raman spectra show the formation of a sp2 solid with a very large fraction of sp-coordinated carbyne species with a long-term stability under ultrahigh vacuum. Distinct Raman contributions from polyyne and cumulene species have been observed, as well as different stabilities under gas exposure. Our experiments confirm theoretical predictions and demonstrate the possibility of producing a carbyne-rich pure carbon solid. The stability of the sp2-sp network has important implications for astrophysics and for the production of novel carbon-based systems 关键词: bonds (chemical);carbon;ionised cluster beam deposition;nanostructured materials;polymer structure;Raman spectra;thin films;nanostructured films;supersonic cluster beam deposition;in situ Raman spectra;sp-coordinated carbyne species;sp2 solid;sp carbon chains;carbyne-rich C;polyyne species;cumulene species;sp2-sp network stability;C