TY - JOUR
T1 - Quantification of oxygenated species on a diamond-like carbon (DLC) surface
AU - Yang, Min
AU - Marino, Matthew J.
AU - Bojan, Vincent J.
AU - Eryilmaz, Osman L.
AU - Erdemir, Ali
AU - Kim, Seong H.
N1 - Funding Information:
This work was supported by the United States Air Force Office of Scientific Research (grant FA9550-08-1-0010 ). Additional support is provided by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Freedom Car and Vehicle Technologies Program, under Contract No. DE-AC02-06CH11357.
PY - 2011/6/15
Y1 - 2011/6/15
N2 - This paper discusses the use of chemical derivatization methods for surface chemical composition analysis of diamond-like carbon (DLC) films synthesized through plasma-enhanced chemical vapor deposition with X-ray photoelectron spectroscopy (XPS). The main challenge in applying chemical derivatization reactions for titration of organic functional groups on the DLC surface is that sub-surface oxygenated species are not accessible to the derivatizing agent. As a simple approximation, a functional group that can be quantified unambiguously with XPS can be used as an internal reference to estimate the accessible-to-inaccessible ratio, and this information can be used to estimate the total amount of other functional groups from the chemical-derivatization- assisted XPS analysis. The use of this principle to obtain the surface composition of hydroxyl, ether, carbonyl, and carboxyl groups in the oxidized surface region of the DLC film was demonstrated.
AB - This paper discusses the use of chemical derivatization methods for surface chemical composition analysis of diamond-like carbon (DLC) films synthesized through plasma-enhanced chemical vapor deposition with X-ray photoelectron spectroscopy (XPS). The main challenge in applying chemical derivatization reactions for titration of organic functional groups on the DLC surface is that sub-surface oxygenated species are not accessible to the derivatizing agent. As a simple approximation, a functional group that can be quantified unambiguously with XPS can be used as an internal reference to estimate the accessible-to-inaccessible ratio, and this information can be used to estimate the total amount of other functional groups from the chemical-derivatization- assisted XPS analysis. The use of this principle to obtain the surface composition of hydroxyl, ether, carbonyl, and carboxyl groups in the oxidized surface region of the DLC film was demonstrated.
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U2 - 10.1016/j.apsusc.2011.03.152
DO - 10.1016/j.apsusc.2011.03.152
M3 - Article
AN - SCOPUS:79957473804
SN - 0169-4332
VL - 257
SP - 7633
EP - 7638
JO - Applied Surface Science
JF - Applied Surface Science
IS - 17
ER -