J. Terry et al., Alkyl-terminated Si(111) surfaces: A high-resolution, core level photoelectron spectroscopy study, J APPL PHYS, 85(1), 1999, pp. 213-221
The bonding of alkyl monolayers to Si(111) surfaces has been studied with h
igh-resolution core level photoelectron spectroscopy (PES). Two very differ
ent wet-chemical methods have been used to prepare the alkyl monolayers: (i
) Olefin insertion into the H-Si bond of the H-Si(111) surface, and (ii) re
placement of Cl on the Cl-Si(111) surface by an alkyl group from an alkylli
thium reagent. In both cases, PES has revealed a C 1s component shifted to
lower binding energy and a Si 2p component shifted to higher binding energy
. Both components are attributed to the presence of a C-Si bond at the inte
rface. Along with photoelectron diffraction data [Appl. Phys. Lett. 71, 105
6, (1997)], these data are used to show that these two synthetic methods ca
n be used to functionalize the Si(111) surface. (C) 1999 American Institute
of Physics. [S0021-8979(98)00324- 7].