Adsorption of TiOPc on 1×1 and 1×2 reconstructed Rutile TiO2(110) Surfaces
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Ultrathin titanyl phthalocyanine (TiOPc) layers have been studied on rutile TiO2 (110) 1×1 and 1×2 surfaces by synchrotron radiation based photoelectron spectroscopy (PES) and scanning tunneling microscopy (STM). The adsorption mode of TiOPc on the surface is of great interest in that it is strongly related to the efficiency of the charge transfer process between dye and surface. Core level spectra show that two different adsorption states coexist on both surfaces; an interfacial state that has strong interaction with the substrate while the other retains its molecular characteristics. The bonding for the interfacial state is suggested to be mainly in the 1×1 areas. Annealing significantly changes the distribution of molecules with a preferential adsorption along steps and (1x2) strands.
Other Physics Topics
IdentifiersURN: urn:nbn:se:kth:diva-47344OAI: oai:DiVA.org:kth-47344DiVA: diva2:454805
QS 20112011-11-082011-11-082011-11-14Bibliographically approved