Author/Authors :
Annese، نويسنده , , E. and Viol، نويسنده , , C.E. and Zhou، نويسنده , , B. and Fujii، نويسنده , , J. and Vobornik، نويسنده , , I. and Baldacchini، نويسنده , , C. and Betti، نويسنده , , M.G. and Rossi، نويسنده , , G.، نويسنده ,
Abstract :
We have investigated the structural and electronic properties of a pentacene film (∼2 nm) grown on the Cu(1 1 9) substrate using scanning tunneling microscopy (STM) and synchrotron based angle-resolved UV photoelectron spectroscopy at room temperature. STM images indicate an ordered superstructure of pentacene molecules lying almost flat with respect to the substrate. From angular-resolved photoemission spectra, we have observed an energy-band dispersion of about 100 meV for the highest occupied molecular orbital in the direction perpendicular to the pentacene surface.
Keywords :
Vicinal single crystal surfaces , Photoelectron spectroscopy , Low-energy electron diffraction (LEED) , Scanning tunneling microscopy (STM) , pentacene
