Abstract
Impedance spectroscopy of lightly nitrogenated ultrananocrystalline diamond films is investigated in the range 10 mHz–10 MHz at different temperatures between 115 K and 300 K. The electrical response was modeled alternatively by a series and a parallel equivalent scheme considering also the contribution of a resistance in series with the material’s response. These schemes fairly agree with experimentally observed low-frequency data, but cannot completely explain trends observed at higher frequencies. Resonance effects were indeed evidenced due, probably, to the formation of a distributed junction at the interface between the p-type nanocrystalline diamond grain and the degenerate n-type connective tissue. The role of the series resistance is discussed and a physical model is proposed to justify the resonant behavior of the quality factor.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
