TY - JOUR
T1 - Core-level spectroscopy of hydrocarbons adsorbed on Si(100)-(2×1)
T2 - A systematic comparison
AU - Achleitner, A.
AU - Baraldi, A.
AU - Widdra, W.
AU - Wurth, W.
AU - Menzel, D.
AU - Keller, C.
AU - Stichler, M.
AU - Fink, A.
AU - Comelli, G.
AU - Lizzit, S.
PY - 2001
Y1 - 2001
N2 - Adsorbate and substrate core-level binding energies for adsorption layers of six unsaturated hydrocarbons (formula presented) and (formula presented) on the Si(100)-(2×1) surface have been determined by high-resolution x-ray photoemission spectroscopy; results for the clean and the (2×1)-H covered surface have been obtained for comparison. Remarkable differences in the Si (formula presented) and C (formula presented) surface core-level shifts for the various adsorbates are found, which range from 327 to -169 meV and from 1220 to -260 meV, respectively. Both initial- and final-state effects are necessary to explain the strong but unsystematic variations of the observed shifts. Additionally, from a comparison of the C (formula presented) intensities the absolute saturation coverages are determined to be 0.87, 0.84, 1.15, 0.79, 0.36, and 0.44 molecules per unit cell of the clean surface for (formula presented) and (formula presented) respectively.
AB - Adsorbate and substrate core-level binding energies for adsorption layers of six unsaturated hydrocarbons (formula presented) and (formula presented) on the Si(100)-(2×1) surface have been determined by high-resolution x-ray photoemission spectroscopy; results for the clean and the (2×1)-H covered surface have been obtained for comparison. Remarkable differences in the Si (formula presented) and C (formula presented) surface core-level shifts for the various adsorbates are found, which range from 327 to -169 meV and from 1220 to -260 meV, respectively. Both initial- and final-state effects are necessary to explain the strong but unsystematic variations of the observed shifts. Additionally, from a comparison of the C (formula presented) intensities the absolute saturation coverages are determined to be 0.87, 0.84, 1.15, 0.79, 0.36, and 0.44 molecules per unit cell of the clean surface for (formula presented) and (formula presented) respectively.
UR - http://www.scopus.com/inward/record.url?scp=85038306566&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.64.045308
DO - 10.1103/PhysRevB.64.045308
M3 - Article
AN - SCOPUS:85038306566
SN - 1098-0121
VL - 64
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 4
ER -