Interferometric two-photon photoemission correlation technique and femtosecond wet-electron dynamics at the TiO (110) surface

Abstract

The femtosecond time-resolved two-photon photoemission (TR-2PP) and the ultra high vacuum (UHV) surface science techniques are integrated to investigate the elec- tronic structures and the interfacial electron transfer dynamics at the atomically ordered adsorbate overlayers on TiO₂ single- crystalline surfaces. Our research into the CH₃OH/TiO₂ system exhibits complex dynamics, providing abundant informa- tion with regard to electron transport and solvation processes in the interfacial solvent structures. These represent the fundamentally physical, photochemical, and photocatalytic reactions of protic chemicals covered with metal-oxides.

Keywords

time-resolved two-photon photoemission (TR-2PP), reverse charge transfer (RCT), proton-coupled electron transfer (PCET), ultra high vacuum (UHV), Optical Bloch Equation (OBE)