@Article{OishiSiBoReCaFe:2018:InMoCa,
author = "Oishi, Silvia Sizuka and Silva, Lilian Mieko and Botelho, Edson
Cocchieri and Rezende, Mirabel Cerqueira and Cairo, Carlos Alberto
Alves and Ferreira, Neiden{\^e}i Gomes",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Estadual
Paulista (UNESP)} and {Universidade Federal de S{\~a}o Paulo
(UNIFESP)} and {Departamento de Ci{\^e}ncia e Tecnologia
Aeroespacial (DCTA)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)}",
title = "Influence of modified carbon substrate on boron doped
ultrananocrystalline diamond deposition",
journal = "Materials Research Express",
year = "2018",
volume = "5",
number = "2",
pages = "e026405",
month = "Feb.",
keywords = "reticulated vitreous carbon, ultrananocrystalline diamond,
HFCVD.",
abstract = "Boron doped ultrananocrystalline diamond (B-UNCD) growth was
studied on modified reticulated vitreous carbon (RVC) produced
from poly(furfuryl alcohol) (PFA) resin with sodium hydroxide
additions at two different heat treatment temperatures. The
different amounts of NaOHin PFA (up to reaching pH values of
around 3, 5, 7, and 9) aimed to neutralize the acid catalyst and
to increase the PFA storage life. Besides, this procedure was
responsible for increasing the oxygen content of RVC samples.
Thus, the effect of carbon and oxygen coming from the substrates
in addition to their different graphitization indexes on diamond
morphology, grain size, preferential growth and boron doping level
were investigated by FEG-SEM, x-ray diffraction and Raman
spectroscopy. Therefore, B-UNCD films were successfully grown on
RVC with pH values of 3, 5, 7, and 9 heat treated at 1000 and 1700
degrees C. Nonetheless, the higher oxygen amount during B-UNCD
growth for samples with pH 7 and 9 heat treated at 1000 degrees C
was responsible for the RVC surface etching and the decrease in
the boron concentration of such samples. The cross section images
showed that B-UNCD infiltrated at around 0.9 mm in depth of RVC
samples while carbon nanowalls were observed mainly on RVC samples
heat treated at 1000 degrees C for all pH range studied.",
doi = "10.1088/2053-1591/aaaa82",
url = "http://dx.doi.org/10.1088/2053-1591/aaaa82",
issn = "2053-1591",
language = "en",
urlaccessdate = "27 abr. 2024"
}