TY - JOUR
T1 - Argon atoms insertion in diamond
T2 - New insights in the identification of carbon C 1s peak in X-ray photoelectron spectroscopy analysis
AU - Veyan, Jean François
AU - de Obaldia, Elida
AU - Alcantar-Peña, Jesús J.
AU - Montes-Gutierrez, Jorge
AU - Arellano-Jimenez, María J.
AU - José Yacaman, Miguel
AU - Auciello, Orlando
N1 - Publisher Copyright:
© 2018 Elsevier Ltd
PY - 2018/8
Y1 - 2018/8
N2 - The C 1s peak's electron binding energy position in X-ray photoelectron spectroscopy (XPS) analysis of single crystal diamond (SCD) and crystalline and polycrystalline diamond and graphite films has been extensively investigated. A key issue is the experimental identification of C 1s peaks position from graphite sp2 and diamond sp3 C-atoms bonding in the diamond lattice, based on expected energy shifts of C 1s peaks from theory. Because of material charging upon electron photoemission, the absolute binding energy of the C 1s/sp3 related peak cannot be determined. The systematic study of C 1s peaks from XPS analysis of crystalline diamond, polycrystalline diamond films and graphite show key findings: 1) Ar+ ion bombardment is a reliable technique to characterize Diamond vs graphite materials during XPS analysis; 2) A low energy peak reported as C 1s/sp2 bonding, is attributed to the C 1s/sp3 in the presence of Ar atoms inserted in the lattice. 3) The data show direct correlation between the energy of the Ar+ ion beam used for surface sputter-cleaning and binding energy shifts of XPS C 1s peaks.
AB - The C 1s peak's electron binding energy position in X-ray photoelectron spectroscopy (XPS) analysis of single crystal diamond (SCD) and crystalline and polycrystalline diamond and graphite films has been extensively investigated. A key issue is the experimental identification of C 1s peaks position from graphite sp2 and diamond sp3 C-atoms bonding in the diamond lattice, based on expected energy shifts of C 1s peaks from theory. Because of material charging upon electron photoemission, the absolute binding energy of the C 1s/sp3 related peak cannot be determined. The systematic study of C 1s peaks from XPS analysis of crystalline diamond, polycrystalline diamond films and graphite show key findings: 1) Ar+ ion bombardment is a reliable technique to characterize Diamond vs graphite materials during XPS analysis; 2) A low energy peak reported as C 1s/sp2 bonding, is attributed to the C 1s/sp3 in the presence of Ar atoms inserted in the lattice. 3) The data show direct correlation between the energy of the Ar+ ion beam used for surface sputter-cleaning and binding energy shifts of XPS C 1s peaks.
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U2 - 10.1016/j.carbon.2018.03.053
DO - 10.1016/j.carbon.2018.03.053
M3 - Article
AN - SCOPUS:85053387908
SN - 0008-6223
VL - 134
SP - 29
EP - 36
JO - Carbon
JF - Carbon
ER -