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Cluster Beam Deposition and in situ Characterization of Carbyne-rich Carbon Films

L. Ravagnan·F. Siviero·C. Lenardi·P. Piseri·E. Barborini·P. Milani·C. Casari·A. Li Bassi·C. E. Bottani
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Abstract

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 showing a long-term stability under ultra high vacuum. Distinct Raman contribution from polyyne and cumulene species have been observed. The long-term stability and the behavior of carbyne-rich films under different gas exposure have been characterized showing different evolution for different sp configurations. Our experiments confirm theoretical predictions and demonstrate the possibility of easily producing a stable 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.

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L. Ravagnan, F. Siviero, C. Lenardi, P. Piseri, E. Barborini, P. Milani, C. Casari, A. Li Bassi, C. E. Bottani. 2002-09-13. Cluster Beam Deposition and in situ Characterization of Carbyne-rich Carbon Films. https://doi.org/10.1103/physrevlett.89.285506

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