@Article{AlmeidaDiniTravFerr:2005:ElChDo,
               author = "Almeida, E. C. and Diniz, Alessandra Ven{\^a}ncio and 
                         Trava-Airoldi, Vladimir Jesus and Ferreira, Neidenei Gomes",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Laborat{\'o}rio 
                         Associado de Sensores e Materiais, (INPE, LAS) and CTA Div Mat, 
                         Sao Jose Dos Campos",
                title = "Electrochemical characterization of doped diamond-coated carbon 
                         fibers at different boron concentrations",
              journal = "Thin Solid Films",
                 year = "2005",
               volume = "485",
               number = "1-2",
                pages = "241--246",
                month = "Aug.",
             keywords = "carbon fibers, diamond films, doping p-type, electrode arrangement 
                         / VAPOR-DEPOSITED DIAMOND, POLYCRYSTALLINE DIAMOND, ELECTRODES, 
                         FILMS, IMPEDANCE, KINETICS.",
             abstract = "Doped diamond films have been deposited on carbon fibers (felt) 
                         obtained from polyacrylonitrile at different levels of boron 
                         doping. For a successful coating of the fibers, an ultra sonic 
                         pretreatment in a bath of diamond powder dissolved in hexane was 
                         required. Films were grown on both sample sides, simultaneously, 
                         by hot filament-assisted chemical vapour deposition technique at 
                         750 degrees C from a 0.5% H-2/CH4 mixture at a total pressure of 
                         6.5 x 10(3) Pa. Boron was obtained from H-2 forced to pass through 
                         a bubbler containing B2O3 dissolved in methanol. The doping level 
                         studied corresponds to films with acceptor concentrations in the 
                         range of 6.5 x 10(18) to 1.5 x 10(21) cm(-3), obtained from 
                         Mott-Schottky plots. Scanning electron microscopy analyses 
                         evidenced fibers totally covered with high quality polycrystalline 
                         boron-doped diamond film, also confirmed by Raman spectroscopy 
                         spectra. Diamond electrodes grown on carbon fibers demonstrated 
                         similar electrochemical behavior obtained from films on Si 
                         substrate, for ferri/ferrocyanide redox couple as a function of 
                         boron content. The boron content influences electrochemical 
                         surface area. A lower boron concentration provides a higher growth 
                         rate that results in a higher surface area. (c) 2005 Elsevier B.V 
                         All rights reserved..",
           copyholder = "SID/SCD",
                 issn = "0040-6090",
             language = "en",
           targetfile = "electrochemical diamond.pdf",
        urlaccessdate = "27 abr. 2024"
}