Nano Archive

Elemental distribution in fluorinated amorphous carbon thin films

Lamperti, A and Bottani, C. E. and Ossi, P. M. (2005) Elemental distribution in fluorinated amorphous carbon thin films. Journal of the American Society for Mass Spectrometry, 16 (1). 126 - 131.

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Focused ion beam-secondary ion mass spectrometry (FIB-SIMS) with 20 nm spatial resolution has been used to analyze amorphous fluorinated carbon thin films, deposited by plasma assisted chemical vapor deposition (PACVD), at micro- to nano-scale. Mass spectra and ion imaging of film surface were acquired and the presence and distribution of contaminants were investigated. Surface images show the secondary ion distribution for F−, CH−, CF−. A change in size and topology of fluorine-rich areas is correlated with film hardness and with microstructure transition from diamond-like to polymer-like, as indicated by infrared and Raman spectroscopies. Based on the surface distributions of CF− and CH− and on the vibrational spectroscopy results, a mechanism of fluorine substitution for hydrogen and an attempt to explain the film structure and microstructure is proposed.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Biomedical Science > Nanomedicine
ID Code:5778
Deposited By:SPI
Deposited On:23 Jul 2009 17:26
Last Modified:23 Jul 2009 17:26

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