München 2004 – wissenschaftliches Programm

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MO: Molekülphysik

MO 4: Femtosekundenspektroskopie: Elektrontransfer

MO 4.7: Vortrag

Montag, 22. März 2004, 12:30–12:45, HS 315

Electron transfer dynamics between semiconductors and chemically anchored chromophores probed with photoemission signals — •Lars Gundlach¹, Ralph Ernstorfer¹, Silke Felber¹, Lars Töben¹, Rainer Eichberger¹, Elena Galoppini², Qian Wei², and Frank Willig¹ — ¹Hahn-Meitner Institut, Glienickerstr. 100, D-14109 Berlin, Germany — ²Chemistry Department, Rutgers University, N.Y., USA

Dynamics of electron transfer between semiconductor surfaces and single molecules is of great interest with regard to single-molecule based electronic devices.
Energetics and dynamics of different semiconductor:chromophor systems were studied with fs time and angle resolved two-photon photoemission spectroscopy and stationary PES. The alignment of occupied and unoccupied molecular levels with respect to the energy bands of the semiconductor was measured together with electron dynamics of the semiconductor and electron transfer dynamics.
Experiments with different chromophores attached to single crystal TiO₂ and InP via different spacer and anchor groups will be presented.