Table 1.

Photoemission measurements of the carbon 1s line for various graphitic carbon nanomaterials reported in the literature. The columns show the material, position of the maximum of the carbon 1s response, the energy width of the Lorentzian/Gaussian component, or, the full width at half maximum if these contributions have not been separated, the asymmetry index α, and the literature citation for each measurement.

material	C 1s max. (eV)	L/G width (eV)	FWHM (eV)	asymm. α	references
graphite (G)	284.42	0.16–0.18/0.08–0.1	—	0.05–0.065	[62–64]
G(0001) bulk	284.4a	0.095/0.294	—	0.10	[65]
G(0001) surface	284.6b	0.231/0.294	—	0.05	[65]
G(0001) bulk	284.4c	0.16/0.06	—	0.048	[66]
G(0001) surface	284.52d	0.16/0.06	—	0.048	[66]
FLGe	284.47	—	0.7	0.1	[67]
SLG/Ni(111)	284.7	0.216	—	0.1	[68]
SLG/Au/Ni(111)	284.2	—	—	—	[69–70]
SLG/Au/Ni(111)	284.42	0.155/0.258	—	0.061	[71]
SLG/Cu	284.5	0.170	—	0.068	[72]
SLG/SiC	284.83	0.12–0.2/0.4–0.7	—	—/0f	[64,73–74]
SLG/H/SiC	284.6	—	—	—	[75]
SLG/Pt(111)	283.97	0.13/0.34	—	0.13	[76–77]
4LG/Pt(111)	284.0	—	—	—	[77]
SLG/Ir(111)	284.15	0.130/0.165	—	0.093	[78]
m-SWCNTg	284.48	—	0.26	0.11	[37]
s-SWCNTg	284.43	—	0.30	0	[37]
(6,5) s-SWCNT	284.52	—	0.41	0	[79]
(6,4) s-SWCNT	284.42	—	0.41	0	[79]
DWCNT	284.6	—	0.64–0.8	0	[80–81]
MWCNT	284.42	—	>0.63	—h	[82]
C60	285.2	0.11/0.60	—	0	[83]

^aValue not explicitly reported, estimated from graph. ^bBulk value not explicitly reported, 195 meV split between the lines attributed to bulk and surface components. ^cValue not explicitly reported, estimated from graph. ^dBulk value not explicitly reported, 120 meV split between the lines attributed to bulk and surface components. ^eSynchrotron-based scanning X-ray photoelectron microscopy measurements on suspended few-layer graphene. ^fEither not reported or symmetric line shapes used in the fitting. ^gMetallicity separated sample with narrow diameter distributions centered at 1.4 nm. ^hValue not explicitly reported, but remarked to be similar to graphite.